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 0x958f2e24de5b8ff978725ee07f050247e6a09ac8fb687ddb232d7254bffd8fdb. 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/f64e5f96-8aac-4ae5-b1e9-2424b63ee763.json and https://artists.proofprofile.net/proofs/artist/f64e5f96-8aac-4ae5-b1e9-2424b63ee763.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 0x326203165dd18688e524cce93752a5dfeb673ed96d291fbed63b3c33cbfce2d5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX202507880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdba9ff3a2a2948ca5de21455d2ad99ed57d9878e1aa747cd9a7f624d3290c96. 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/QM6N22507366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1c6354c942c0227cd7ee3550a2b445ae8493811425bf8b588dd1f1fcff9624. 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/FR2X42558730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcf202e28962334e864a758bd0d3573def6fc34c70665e61294f94f9359fd08. 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/FR10S2519075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe2c1f2df6478f6a99a0c4dfac95c4c6356e41f114ee9717e140f913818dc37. 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/DGA0T2411028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d15ac230333d098faee9d9faa133442103f3e7b99c3dd6fcf0a3a44c34b4c01. 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/DGA0R2481948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05781f7054b78b33a39f73b6a4c23aca69b7d59f1384adcde48a1a9c04e6ae35. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA0L2417831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4520e2def28224957d341bc6100a764029e852327ab252f31df1b68688bf419. 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/DGA072415474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df5ecc515eadf90075f95fb7d8e2b4432823cfb0270909f1723e42d186ef039. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX872427608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9e71bfeb3a85485d4cb3136bd7e2be7f895d6f55cbed7e9172ce91d77f48d6. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/FRX282430208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899326bcd3dbdf609e6e3bf561a129d363d047cc52da964a827eca18e92cae1c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA0M2379145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5966378746d7c1eaff967cceabafdef185375c8a2b43e245712cea883cdb687. 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/DGA052350798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6530ea86e017bc0ad88725e1c54770f8ed9dbadda25149927a7bc6d8fcb49fcc. 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/FRX282381878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64c779e1da618ce92c4bc93f39e3beb936425686a23c052e2761b5e2ca3715a. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/FRX202376084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d1135d26805076945155b4dd9ed34156c73277a6560f05466af4effaa7f01d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR96X2302347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43582de34367f10487b28dfcdfd626310df8f13daa2287a80bd3225fdb038ac. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA082208665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696ae122b6f38ea9aee10d3fe2b882ea656d74fed73ced5fb688db48d1cb9e21. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA052294017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ebd25cbfd5fb9f05985872456243dbeaae8cde6cd1f8b61994d719a06c60a6. 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/FRX452222222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d693a5ee6bc9983c6d9c9dbaf42616a5a2295185759225da3029184c4d32de. 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/FRX282241928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fe775a57409027f9231f2d7dea4182084fb4a931a87a9fdae09596eb375623. 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/FRX282242145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f68c25305774cd13a4d37da38b1a8fa5352ea4bf2ec500cedce2d25dd3a8a0c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX282242144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd3eb028f95dc6ef4b9fbc981cd30d24d00d048e47b5e3e2890e4e78a3cb725. 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/FRX282241948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cebf67aac529ddf702319f1e0a0cb2d2c5f99fc01bc4d1d7c3fcc975dac580. 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/FRX282241945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba83f976d06f4451ec31db066f0884142f379d641677a66609db73707aa76a2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX282241901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297aa77a59642f376d412a7aff6cc593fb57a9f52410822559a6e12768137a29. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX282241940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913f8bc8d8e80894914c9265ea8c2cfc95e3f2f4bc69f369fd717020a386c9e8. 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/FRX202298627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba00987f64aad57c0e6a3310e3a30d23a7783d7fdbdcca40c4b2be179cfb197. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0H2485474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81ca7ea6fa13f1c8e0f01269a230fa3bfa8caef358d8b9e653a734daace6f75. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR59R2427964.