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 0xe35046f1b09f8bc45c0cdef7c4e68a97fc471a89a8ef07190c31d480e4288530. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e7c4a91-fea6-4158-935d-753784009b42.json and https://artists.proofprofile.net/proofs/artist/7e7c4a91-fea6-4158-935d-753784009b42.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 0x54e23ccfe68367592bdeeefcb41eb360de0c653f67a20958d6ab409b0883080b. 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/USMRE0863808.
José Miguel Class - Los Éxitos de "El Gallito de Manatí"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3bc579f95c28868c9746ddb4025f7ae7ad8d933f7d939e66f607ad6a92d08c. 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/ESA011844418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51c86a097e247e11011bedaa5c23e2f9d0b2b0d1573d0114b84d652518c0e1d. 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/ESA011844417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4448fcac86fb8742166930aae1228bddb831c1ebcbbf10d6938806d99063ec87. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:05:09Z), 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/ESA011844420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc67b9742c3aae1f4d0e930116d3eea3aadc5e03eb891b655e0431e0b2e9577c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ESA011844425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e6f73319135f67b11f356482eabf7d518e574887c5a61877b21d37169778cb. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USMRE0864906.
Rescatando los Éxitos Originales del Long Play
José Miguel Class: los Éxitos de el Gallito de Manatí
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059b5def549dd5d5cd04415464f30155f8cc6fe057d18df217f2bbdf2ff136ba. 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/USMRE0864810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3bc579f95c28868c9746ddb4025f7ae7ad8d933f7d939e66f607ad6a92d08c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:45:35Z), 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/ESA011844418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00de2960c40c2cb209771c7f8608704b26cf94a0fc2ac18a1abf6bec7957e074. 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/ESA011844421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edd7e791531951fb6809b49f3fdc00f3d1184a2e04a55b82e3b2c5808740303. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/ESA011844422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c670fd95ff20db534d39bbde489f46c2ecea8eb60450320e87a7ab639f34bbc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ESA011844426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e4978a600b25f6cf3175019a4c28310385fcfe4dd44c84fab4822ff2adf9ea. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ESA011844429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd28a0d1e3dbc907dd46608d25c7bec3d59c3672b3e4bf81600c1ed983025f67. 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/ESA011844423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa595543aa2b45727d15800dbf989422decd1bc57605c17596b6c972d9b177b19. 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/ESA011844424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a50695ae06a7ee938a8400541bfa3bd79157958b48c79c82bffe0d7919b9f7. 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/ESA011844428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0748d51ad11c0c5f83f69ba03a664c91b40554f548b01bcd7603fbdcdf4a76a7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ESA012026748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159ae050b721a500cb65934a49f4065f66e020f9e5c212e1131492dbe4a40d93. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:19:41Z), 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/COATT1902583.
Recordando a Jose Miguel Class El Gallito de Manati
Essential Classics, Vol. 1107: Jose Miguel Class
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d249571bee6753ed4fc1efae3f36a737d0f6a052f260f158401f19eacaaa805. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US78T0506232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b175c67093690f4f0192a1fe76d587780bd16432680d6bcdf4e8576c6c5181d. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/US78T0506234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9979a1b971647cefbdd44dfeb5c1a3b369de4ca420a8f799f7760ce2b889174. 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/ES71G1732609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3d54aa7797c86f5e31251c838ecb5317cbba2dcf6a10220512d0d5a87b3b36. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US78T0506227.
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 0xd051cac78c00d51804a84d929807f5cd520219b21c80a2ae0b44c6e4896aca82. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US78T0506229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6521977e6442f0278a92d7aa7d74ff0935ccad4032b8053e500724f6e987980. 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/US78T0506231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b058d97976320059e4c0e7b0350c1a563a50fc1ba65fcbfe445cc773ed0e845. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US78T0506235.