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 0xd389a33540cba670c7e2ff0d76230d839a4f62046d322b08ebc80c58e68ca001. 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/f4508cef-8fd7-455d-92b6-3fc031fcdb7a.json and https://artists.proofprofile.net/proofs/artist/f4508cef-8fd7-455d-92b6-3fc031fcdb7a.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 0x57f709e75e7035c7b3e4d5e4ab55f87a8652108355bbdb155b563d16cb3cf4b0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US7VG1730134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddbaf989e7964ec136ee1be355d6d417915103c82eb846bfaa2cd7295412c06. 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/US7VG1730138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f90b63d4082637d42c9362c19cdcd9d7501d33b1fde247c480720d2a98d0b1. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/US7VG1730140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4b82883567965870e635cd0f71fb8e24612f9c9b827fff04a4ec0afa194eba. 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/QZ5AB1711135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dc4d66e891319cee8ee6e5d36a2f1995fd6fa297a342e28fbf6860f9b7bf8f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:00:33Z), 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/US7VG1730133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20f6efad86dcbf3e48a2479dca78f2287bce37c944b3f9685eca5563caa1746. 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/US7VG1912124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59cb99659d61b4fe256e8bb28e3550254f9dcf34391baea08128dac59d55100. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:19:40Z), 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/ESA012175054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259ab4c4dde5d1750d8e1f4d94e9fc543b0ca7637695862ebc0089f818564cba. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:18:53Z), 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/ESA012175055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ff2133b1c4353257703f84ef5cfd35c6184c954b74adfe5b00027d320727fc. 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/QZ5AB1919476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10be55361fbda9c4ed3fa71e944d6f66cf4e554ba31d60cb35dd3edd8a59d966. 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/QZ5AB1919479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0935153b2de610557623fb33943c4a127b5b5b296535391cc60bb2212c83378b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ESA011961300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37431a04a902e683631d8d1038ed94194ea25fb71ac862ee5c54689f04327c72. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ESA011992653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5edced35ac63f78754083c95a9d1d095998c62c218d022f3b940533f781fc308. 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/ESA012153309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cb09900e88002230802cb4cd64e9468cf2d7c315093676a2ce6f784297a5e4. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:04:05Z), 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/ESA011521362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0c0dee62ee4589f44a4947a27620f5e159528166426693db0251c9dbc92b0b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/COAF42290098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcf7029b25489333e4913dc16d54cd1b9cac790257c49b3e919e7eb6ccf589a. 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/COAF42191505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5647f0f285a986d5a140f47f8e507bf75c82046ad447d1318f5ea516ec5c1dc2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ESA012208088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a90e51e49b6fedc65eb0b6e94be0d361145a5a05f9699637061926a696aebdf. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/ESA012208089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1ddef2dcb6edeb24a3469e1f8a4c3d3548279525ae4a508416ee586fc2b263. 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/ESA012208090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408312777c7f486d508cd570b15f662d28da80472919f4a66f2dec0bcebf7668. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:01:12Z), 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/ESA012208093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd08b76eb576042a958dee198449022829a1dd3a995a2aa06b5bc30c2ccdd21. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:04:25Z), 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/ESA012208096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb9e25e525b4f9db51f4763e93881b619a42929ca8cfb5c2d1bf350153b208e. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/COAF42290093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7801ddaaf032b0d7d4da945e981c27b43e962b99ecc6af962a293748f436d6f4. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/COAF42391143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b76c98ee06b054690bbeed02dfc796f9ab2ac376fe2060e7aa32e2bacaabaf7. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:21:16Z), 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/QM4TW2569559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d08a52c8fd645e82a08e1b6e0ee1417479e0bc541a4dc583f6fc7f251aed33. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:57:17Z), 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/QM4TW2569539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9a061ccdcee73ac7e0de55bbc13d7785c0d644b3f3cfe5fc222de8f625e22a. 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/QM4TW2569540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca30a38f3752f4fc4674c03a77886c25406f5dfe9cfbc78dc27ff3e36afb0595. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QM4TW2569541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5584509864c30748091c03928f4c88104b9cd67e34e0d2e4e480b1049e21b850. 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/QM4TW2569542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b76c98ee06b054690bbeed02dfc796f9ab2ac376fe2060e7aa32e2bacaabaf7. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM4TW2569559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ae647071785f108386797590a14f1d8eaf41a62607ba3c8c2db18a11a47f1c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM4TW2569543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494e5c8c16d6aa55eb4409c3232e9ecd0c3dde20edbc2aa59f6a0e1be389f853. 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/QM4TW2569544.