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 0xbda6ef5d8af5bce744457792cb8362a9c7c64e0afcd7b145f4cc00ef31d340f4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/157f5419-4c5d-4166-b379-3df1befbb243.json and https://artists.proofprofile.net/proofs/artist/157f5419-4c5d-4166-b379-3df1befbb243.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 0x1256d894495b1819e9e9f226021292397ffc91ec817fd9198b3d8dc710823c75. 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/QZZ8A2415576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe465ff3ca9deffb294a91592b1850d9fd827cd054ed949f4c29e6e43476a291d. 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/QZZ8A2416760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb984801cbf406e1f163255c3b210b5fabb0352d79fbd23c48b1090d61a3817fb. 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/QZZ8A2418372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba4aa631ff0d84d78d88505b0459f1e95f85f9079d2322292842de14d863877. 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/QZZ8A2418405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb883e642c397846fb0f5d2f5042b9e96d8e9f2369bca048eb6c9ca16aa7e5cf0. 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/QZZ8A2421602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2648d38c09e6e989226f1cb5fd111d471becd25f5b88b0dcc37ee1b82d76100a. 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/QZZ8A2429002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec3cf4e0ee9dfc76a92329d4437bded4165f7bb71957b6a2e93341e61bd4801. 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/QZZ8B2426380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7974097489932ad24dcee6672979a465182be369edebf1838a1f24a9412527a4. 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/QZZ8B2426401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44e1c1da6434a8430e8822f4bd26a454df1ee422daee7135297f63e1e87389f. 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/QZZ8B2431328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec3272b1991435d485ded511d478c067a63efdd21a603c53743e911ffcc3b8e. 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/QZZ8B2431332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2058900d79b739916e5293456678857b285ba3170255baa8b80ed243d16168. 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/QZZ8B2431344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d3aa56e324d1e9cb6c9c8e022a009cae0728b173a99817395dcee094360428. 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/QZZ8B2431935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e098dd1e07a1bd22870c20e88fb417b67ba33265e6b9288c4da63829fcd2fec. 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/TCAJP2502887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313537164ff9e372510698921e1fb43c06950523e1d199e2b397e48b08d15b46. 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/TCAJQ2502915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf660f2150413c339f57562276fc9b3ebbba7a3e4915ff2a6530d7a32d66ee138. 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/TCAJP2503002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e30ec290e5b3991e1be6e3ffb3b57e02f2f38091c7990092fe02e879f343079. 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/TCAJQ2503061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cfc26eb87277409813b4b68c3e84489d179c9767ab7707278328f2fb781508. 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/TCAJP2503205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45152554b11344460d3c4e20c38b0b413a7e6394d61a963854eb8c1a647e374c. 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/TCAJP2503418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb98ebf6794bf2d68ed2b5eddd648bf31ad7a4a2af78c3327549031502044812. 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/TCAJP2503481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135a0791ad23301bd16f5a3cb20c3d6f1e75caf84e50c67aebc8387d3f7ac38e. 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/TCAJP2503601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9711db8a6ce819776851d1f45f1a80cc13574a2665e4ebb57c9087c3bfde12e. 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/QZHZ42021788.