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 0x9c298e95ebc93dcb2ea3b2aa8fcae18e8f4c420882f4a42d203216c52114a1c0. 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/c530d389-0282-4632-a4f4-a5a2ed50ffc3.json and https://artists.proofprofile.net/proofs/artist/c530d389-0282-4632-a4f4-a5a2ed50ffc3.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 0xb91c85079f0cc46cc8ed2a3674cc22345eecc2811d529529a6187fefb2613401. 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/QM4TW2308940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d6c1bb1e0777bdb14b6c5ad1235994efd738e755afd6187cc9a89cabd3c6d4. 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/QM6P42215879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef33070540a7d2d10a4ef10e5a038c334571d4b2e9bb61b22cb26dd7a50c1ff2. 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/QZNWT2231116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a999f8d454a6140f07bf09e1ae041526361e59eb36dd51a930a81464a1a9ed0. 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/BK4DA2215302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87c80e873e1a5de0395c37ce636018d3a816b1ce09af417e24f0260890ac1a9. 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/ES64E2303237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf728dfbc012c17552d8f245417be532ed2a7f72b001a747632b4e7b20f73796. 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/USHM82224579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668342f30d97162d21f5cfe8d69f2c82b145c02921b61fcd750ec53b8133992b. 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/ESA092237396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6736fd34cb6e2a3ef36de910a8abf565bda69c76beb1ee8ed1c203bec1dd14c0. 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/ESA012228254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe959fd20c1ac86aecd53fc7a2d0b1221ce03c2760a8e9773c263df8d7b6757be. 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/QM4TW2405600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29896c1450052d763eaa895b36a3fd6844df1be0211739d6b396a55fed64e554. 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/QMFME2324654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99117a2262f6b35eb09abe2d52778ef28591c00751a6d163a127b51ffd47f21. 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/QMFME2332240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddde5be8323bdc803c3db14f53b842657bfd9f6c5eb3f9cbaf5594ea97c3b1b. 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/QMFME2332237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd265c277dce314591297fec6e1b6aec1d69c1ae7961b2568fa17271f310c19f0. 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/QMFME2332283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d636714f223472c82da9b457590ac3402d483dc8e03d4003b246637a84abb23. 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/QM4TX2371125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bc22e981fa2dff9ebe7c35a11d3b43f3a3d098251d5cbf761f3a44d2c443dc. 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/QMFME2332304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eaa52df6fcc10c2421950744323320c4e230a191b06984635ad4b2b516e7313. 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/QMFME2332311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6052f40f008200c4c2f8b62122137281884407f4522f9722406019c82246bc1. 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/QMFME2332313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb965a90ac46f35f2fc7d6b0b00b7769b29114baf9352c650c1c25731c68d589b. 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/QMFME2332314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd369fbb1832570388367ee218d0219e5ee195d1000506f20cc4935c271116f. 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/QMFME2332315.