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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877a14b249609761e6398f95022b62d1f761c9fb5301568a48ed14b392fafaff. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9ffc775-2e06-4008-becf-1b0e8bc8bf4f.json and https://artists.proofprofile.net/proofs/artist/f9ffc775-2e06-4008-becf-1b0e8bc8bf4f.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc562ddb4d91a0e06dc81162aba8c13549bbd0ddaf5bb03b8ac026e1a939f172d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USMC19033876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e721c212dce85d727eaa19d82e2a42fa1054d091d4f00cd15a1fa3b246cb1e. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USMC18518719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4470934eb4b7031648fb316342b82393286ea313eb14fb5ff3204e94b722bb41. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/USMC18518720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751796d94e69c295973dea5f1c64261e1c6985c377c82d36e731f7c66d090c22. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USMC10111832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ac57d82b75cc50d757bf67d7da18580afc6522ecc90fbfa84ee351533e435c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USUM70765492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb55034dad17f5083708377cfc5d294c1456d659b9a0ae7545686298d9788296. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USMC18724225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bb6f66090489dad17356f870fc2b2a67873b8dbf92714e33288fce964a57a1. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USUM70765495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f07909c78fe4dd1efed41f9b6068ca0c6ab6de6983f33ed72137b4b0fe24f2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USUM70766048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3cf3bec9a19817462f86a975ed29c81c153bf5a6e775fc5be8c79d0cf9077e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USMC18723230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1e3f3b4dc1abf2454f79e8c83bf417e39f4ce0317150a6f2e1f1577ff7fc32. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USMC18518275.
20th Century Masters: The Millennium Collection: Best Of The Jets
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d01846ec65080e0fcf5d03b42e1295862c4988895f42810458a410c7b30abd8. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USMC18518716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751796d94e69c295973dea5f1c64261e1c6985c377c82d36e731f7c66d090c22. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/USMC10111832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd244371cb5a48fa7b8425d1733c944acf3e78d9b8ab5eb6ed34a919cab898bf1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USMC10111829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d6b61586c76d651ad35c161f10c7ba5cfc8cf55feeb24e4f27ea13629e3379. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USDEI9804793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcebb0e6d927939551c61918eb46f0f0ad097ee2a115586436448d3ee3a31d68. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USDEI9804790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555185fec64534926bc80ebfc36f9125bcd0ff36ead6a79d632d25dc6d65a5ee. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/USDEI9804789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c6b5c6f98f61113bce48e5ea3fcfa5d9bb5981627dfe14227e3ce25c6c0b5a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USDEI9804792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c42d12613f456c03ed9a67f89a275aefef37416c8ad6ebede91c355fac63c8c. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USDEI9804797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57519676b9cbb928e3e91dd56ef9e383eb807f0bdef690d160f905f523650174. 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/QMKUJ1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936f8d20bfbf3e03809fdb3440bc845eb941825d8f8db8b66ac72cb73160b321. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QMKUJ1300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb28ffbb029cb737c35ab95e2b26eb42a3f77dbb1f6c4f54faf40c389f0855a. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USDEI9804794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45d383eb718e51d1460b12bb82fa5d27683a0f65541f300a86da437da5dbdb4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USDEI9804791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88599a6acd4f926dd6e80f78ae877c4aff9bc9da9595fd7e43647b5000a39b6f. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/THG011900679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e6fb5511376955fbe03e506f3dd9e3f43d95b7404c7eb5fab8128e610030c1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GB56T2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6f8278964add1922a92999ce438c6fb8edcd0656e7733932f4ac4296f57f09. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USMC18518717.
Western Organ - with Roy Richards, Lyn Taitt & The Jets
All Aboard The C.N. Express - Rock Steady & Boss Reggae Sounds From 1967 & 1968
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25322e73581eb72099f2e8c9d5d5174b2833306c105604f7decee3481e23539. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GB5KW1904822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47b0f9fa9baf35075517e914990d8cd06c34e8f806a06b1067aa307ec243363. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB5KW1904828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d653aa5e9a752ca8bfbbcc5dc2f3b6d9c37212d91653440b0556d484ea7aa5d. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USMC19033881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3cf3bec9a19817462f86a975ed29c81c153bf5a6e775fc5be8c79d0cf9077e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USMC18723230.
忘れられない80年代洋楽ラブソング
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d653aa5e9a752ca8bfbbcc5dc2f3b6d9c37212d91653440b0556d484ea7aa5d. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USMC19033881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa9d76e256595c8992691d277b10ad130c6f4abe99af2311fb08e0351b6916d. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USMC19033880.
The Work: A Nashville Tribute to the Missionaries
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b48491b5a13c1641b670c1557823925bca4552c64364ee7390d24b8b7b52ba. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USB3V1104112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa01f4a7146826350dd9b766e5295458427ca1ea3a4a19e3efe052625f8aea61. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QM4TX1948703.