Simeon ten Holt (24 January 1923 – 25 November 2012) was a Dutch contemporary classical composer. Ten Holt was born in Bergen, North Holland, and studied with Jakob van Domselaer, eventually developi
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc764d2e32b48831cc0235000b042fbc86da82075f645b4aa08e51320766869. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4235b3b2-a5ab-4d56-9ac2-3a9751f5d2c5.json and https://artists.proofprofile.net/proofs/artist/4235b3b2-a5ab-4d56-9ac2-3a9751f5d2c5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ec232ce18710f0486234a961fd663f99fbbd2ed352675d8e91473c758fab36. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5e047dcebed8010b7ed6d794c838bd20b5267cf70ab126f383150b9804615d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa487e4cb0ee59e113f772632ef4a4822f01acdccd497aa2ded1e917863abeb04. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c81153dcfb90cbb7f95743f3b01a1a650a123d61110106785fa52f86534c72. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:26:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c9403cb713dd20e2149479916864fff4597ee1619b8fb0b5b68efe66c6347d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9211a4ccf7de34799ae634d41afa4b33012512991358afb8f6563665b8d58f67. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:53:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6ff5053488c69c59dec46d26becce293112f1c4c5dde0a1ac24d1088c4710b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d85512483712fe8e50439b6c432e1f27b2bbdc9831a129230cfeb7ea1314cd. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:52:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82dd6128532bc8863eb60ac92c5f9e7de906c4f6947c9b69d3010edaae4bb170. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fad6598f7fd37f4a81dfc815a4102fabec2f7715f1e113b5adde26ca8450e9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0966b248cf714a379da0b1ae657ec00aed1945b0659fd0f5fb08f226f9d9a7a0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000904.
Canto Ostinato: Section 88, E (2) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f0a6b1da171f5b07e3c9ab8ab7cfe9fc63d2aca93bb9c2c59f10c7ce0e4551. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000905.
Canto Ostinato: Section 88, C (3) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26d96d217f93f9f04ae97d6b01105155dda1ab4ebedc16eaa2fe2cdd13d40ce. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d0c65ae692da54ab6c58734f38ecf54a438d2f7a92f46ff85bf38edc68ada4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ccb538b8d796d1b4973370940c416a6ff2345b9a2a2a0c4dffe46ee273d754. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafaa566b2d4e707d111c636c51f37c5477f50ae878897999ca03a07b6636b593. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a47ecf99c037e64c54263e31d89cdcc342b8278a661339ca685dd353002ecd9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6861157da108e4f23b68114183cab7a79876f55c216a88037ac1bceefb9ebbb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530e084c15ff18b70bc98491d9997b03ab32db22626a62f72ccbb3fd7e2d78c4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243644703568cb680534733d398753b311bb4ffe5a7dd0f8ae5fb4ae3747d2aa. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:10:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3UC2000917.
Simeon Ten Holt: Complete Multiple Piano Works
Canto Ostinato, Part II: Theme II, Section 95
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8545380007679afd1b860e38e9b1f14cc1c57c82176e70c267ccbbcbeb075f5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLN580565698.
Canto ostinato (version for 2 pianos): Section 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd34068117d7d91ffc4348a11b885bd3d4166eb39da19f3fdd3c88b2e2f44f2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY430800069.
Canto ostinato (version for 2 pianos): Section 10
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a5dee592f6e4e1beb48a85940484a3d0cc957719834eb1552a7e814ec4e281. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY430800071.
Canto ostinato (version for 2 pianos): Section 74
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a484294559911683172abdbc9025c62ae68ad437aadb746e8b31dc702d4cfaf. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY430800083.
Canto Ostinato for Solo Piano: Section 95
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb70893f2816533b59fe50a0ccbacf5af1c4a272fdb1c90efed468bbfef8c85d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331401018.
Simeon Ten Holt: Solo Piano Music Vol. 1-5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48608c9acc6ff3d57b6fff2f6b76c9af9bed64643a7cf9b2a4ffd17680a882dc. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331302401.
Ten Holt: Incantatie IV for Three Pianos
Incantatie IV, Pt. I: Tableau IV, section 69-73
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5255b1c3362c756c808eb727188a45a1c1c7478507ac4895d1abf8c4ef12bb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331401192.
Incantatie IV Pt. II: Tableau VI, Section 197-203
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee9213e14203f9051656069b2055980a91bf43c7efc09f52a9a123ade42f173. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331401196.
Incantatie IV, Pt. I: Tableau I, Section 1-26
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9cd97af0e5fd71f9013303b8527f6c2ff3a8e59dc2e03ba5689ff3bf62b6ed. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331401189.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Incantatie IV, Pt. I: Tableau II, Section 27-44
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2d32170c01dfd244e6a6c3a5eba9bd2cb0f741a597529e557c95f7008688b2. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331401190.
Incantatie IV, Pt. I: Tableau III, Section 45-68
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0297d816b5ac82def3384a46623e20ae9ab7dcf573f51411ca2fb501479d188. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331401191.
Incantatie IV, Part II: Tableau IV, Section 73-139
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1492c49a892412b0cec9b9cf262b583530d10e2d1cd6927c8edd9be90749779f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331401193.
Incantatie IV, Pt. II: Tableau IV, Section 140-147
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8919a159247e632be0e6024f31903975e69f1a3e605ea68b78a43bbc3d84a51. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331401194.
Incantatie IV, Pt. II: Tableau V, Section 147-196
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c1b183964a6180ffc86b547179078d82b048213bfc89467778ae05ea209e08. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331401195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28234e18ff9c4e050777bc7fcde1d225abc0cdf673038dd84dbdc8355f5f36e0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLP731974001.
Canto Ostinato - Music by Simeon ten Holt (1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9b3d95ca8838a10f13e32683e42fa6e9d640ecc93bd21df92168b4ecf99d66. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLP712000039.
Canto Ostinato (Two Piano Version) [Live]
Ten Holt: Canto Ostinato, 2 Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49e1dfc7bbcd65139907fac22163a7a679fd62fde30966284da8a13ff22c44c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEGW92100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8d280045ab91a2eabcee03e621d8ab1243f1eed050a84a5792ff840138a540. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEGW92100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272248451aa246b86845f07d7c26d6e729e47a2e19af32a14272d059b1c39165. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEGW92100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15478cf45907a53a57a16605ff63c5494db461f3f2242a7298f5bb33eb02a48. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEGW92100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bcb65dbe2d37c4661a223fbf2e61d771fcde61a8b3b610e7556788aae12ed9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEGW92100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd561f429896dfda65b618bb333d51d13a1be33f369f9895e1649b85363888bb1. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEGW92100092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2342efa723149613fc3f3724f8d068b4da792f6d4185e6d1c11d79118ab2069a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:49:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US78L2324802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b9d3eecf96bb55902c4f16d53d0bf7a311801d5beabe2805d5008d3ca327aa. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US78L2324803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721013a7e4357d3f9a1bae0c359c02e2e37e4dbe3fd5c0fcdebdcf2ff6282e43. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US78L2324804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10d0cb6c098b417837cc2c598b625f12307bce9d8ac3c787677accadca16c29. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US78L2324805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df32f2140bf15e941bfcdfd34f7d0ed13625a0da6c4e653dcca70b2201d2a75. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US78L2324806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdac008e2ed4c12bc87e7c4b9d663c33495875443720fa2974cd88bb9bc76df. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US78L2324807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362390d28e2a87f847079e2bb81ea59d3ad26f7f04eba8569d57426f35361d37. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:47:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US78L2324808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7b9773c738e8efc46662dcbaaf545b74065b1b2291960dc8f781af295d5946. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:41:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US78L2324809.
Ten Holt: Canto Ostinato (Four Piano Version)
Infinity. Adam Kośmieja Plays Canto Ostinato
Canto Ostinato (Arr. for Harp by Gwyneth Wentink): Single Section 74 [Theme I] - end
Canto Ostinato Arranged for Organ and Trumpet (DeLuxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f61c478958c4673a1e24a78206c27422b1eadc44acb2b127945e5bc82045999. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332400478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85616ab075b585de696f32801b248c6e01f740d3328d578ee0996d4464c6f75e. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332400479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3753b67ce75a6c5b5c0d19a04f51741033adcaf74c87a1e00bffaa64dd10c9bb. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332400480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ba6212c6eb97af0024b181898a6281bce8b6a034be39d4fa42bfc71b4b50a7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332400481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc595c6480404bfa2dd298de593c985fa17880f426b0a625e2da37bc61f69348d. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332400482.
LP Duo plays Canto Ostinato by Simeon Ten Holt
Canto Ostinato (Arr. for Harp by Gwyneth Wentink): Section 41-73
Simeon Ten Holt Canto Ostinato (New Arrangement for Solo Harp)