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 0x405b8e3b96da0023722ecd7123939905e6ad153f0010acedf15f53930a9acb92. 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/3707ae98-3b74-4bbf-b9f7-9d2b055b7c49.json and https://artists.proofprofile.net/proofs/artist/3707ae98-3b74-4bbf-b9f7-9d2b055b7c49.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 0x04ed2cb9530a52c95257cb3f22f969fbd55f58687afe1279ffbcd9435bd5ef48. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZHN32090341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0781f930be1de03c16e678265478ea923ddb01b35924553ea7abeb77ce69f5e7. 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/QZHN32090343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda760e10c5c500fdbc792f6a500f1ecfce0d9abf2e49721cdf0479362b22bc0. 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/QMDA62145689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6382736ed65a398f386ebf9b2f29dd58352556e116d05f21aec25844edec9f. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/DELV42101277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa159b3ba63d5c850dcc5b55249dab243b12aeee333c3960394d9e64c0cbd40cc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHN42271956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4362792dec00ef04d36ba161c4b951bbb01358447b492c2bd07234a19ff83c06. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZHN52249877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa159b3ba63d5c850dcc5b55249dab243b12aeee333c3960394d9e64c0cbd40cc. 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/QZHN42271956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5919b27d2ac954f02fc1ecf4c30aa93945b9191d7326042d1ecd1eca5fbb2b34. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN52249878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6beac2fe52bf673d5f09166b7a6ef7626eaaf231e5c193083cee19a50f4af82. 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/QZHN52249879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7d650654b2d315a33acdba356baaff0f5ff19d6f0961d8c58bb3253ba969c2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHN52249880.
The Trees Will Swing (І Загойдають Дерева)
The Trees Will Swing - І Загойдають Дерева
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e290fbcd17a2068270e458d98eb253b396fdccf9bd1abfe392116a367912c0. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/DEG932201738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31502f9e51bac32bfe92bf6ef8d6473a939a60a9b3134b6ff6edbb2eed62d9f9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DELV42201215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b644b6b598cdbe1ef44a2846b2f03596fcc933a94e7ded4671e08b73dc7bbf. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/DELV42201213.
I Walk and Shamble Beyond the Cemetery Wall
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dac96cda7149946b0753efe028f24e405ffbed04411b5fb2fd23515d45d384. 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/QMBZ92367963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c65af96283aedd82be5b06b43d34f3f9f2fa2a3329790e44462148de8eb1f6. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/DEH742326612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f738039368de9f7297f9c1b177016864e279f36cd3ed0d84ef3954ca6c2811. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QZWDE2428292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00a9cf257a8395290f35e8d3b980fcd2d0f7f57235c05ea0bd50fb117a0c809. 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/QMDA72460125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb268f093bfc525eddc4c5704ce267d10a37211f8f3b0c2be8e53d579ea18ee83. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QZ5FN2595921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45084160ce0d02a139f0e34a8537767acf1df5f47fccd30c18275f35847a335d. 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/QM4TX2563618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066de1c48121eeeb50f86450bd1e892780115b000b86d11fe486ca47456af1a1. 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/US23A1551701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e74796af89c558018fa4315f8ed69842bff14fe0506e44ce6d49ea9ddb570e7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZES82158791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0384c2c71e0dbcb17a279f259bc41ea6cc45a04393890310c5e46456f51698. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES82158792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b11f2eed9e03f3f62a9da2fefdcda7fb41d5a2941cce23767115457e7ff328d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES82158793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681f574b1dfb2a3d44b4832f0f1d6662bd69fa218d2a9fd87d2b40360cb439b5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZES82158794.
Sleep, Jesus (From "2 Christmas Lullabies") [Arr. Tsupryk for Saxophone & Ensemble]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eba50a04922131192b5faa612ecd91f17222d0fc68872b6f0e6a383f1ccde39. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBBBC2400532.