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 0x262923a18f67a7100e8b19777531d73cc3eee2fea2c63c8dee976d691fbb2a1a. 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/bddfc766-40cd-462d-8273-988ffc9fdd62.json and https://artists.proofprofile.net/proofs/artist/bddfc766-40cd-462d-8273-988ffc9fdd62.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 0x35590f737f9f5bd4fb49a72a866408b336b5ea329f00854427c56184106954da. 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/QMDA62222630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90eea5bceb57d9c6b771fb0bc492390d4c5cf320c8aa55141c25765abdd19272. 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/QMBZ92251185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd546d1d204ebce5c0064c2e6c36f38ba6e95af5013d8d73178f0b6cdee859b3c. 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/ES5022301289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b50e8a3a5b79492dcaa4d0eb70682ddda20a81a920d9381c91fbdda491e7aff. 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/QZNJY2244743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed90a2a3e82cb7fdf72d1e8ac6a583eb68ac8871b7c55495a108b1b04206e261. 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/SE6XW2324375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa7ed1dfb3367cf721c8219a3a0431655393e12d00a861d136b20490273af4a. 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/ESUM72302279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06678064d7f894ec84d2af20f4519f7bdaeec1c10c77194dee7f2d10a2a96fb. 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/ESUM72301896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f93e2927bc981ff17238f9690e27408340c98a47374becd1a6065b3749855a2. 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/ESUM72301591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1d2260c4bdd46a6cc6d5f6e0cfd242959291ab58b1625e29cd9625af59491b. 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/ESUM72300537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbefb4cdc6c30a9b984b4a2f4bc7faf5f2cd79bbc58db2ee2e8b1eebb7056b3. 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/ES5152300171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c43bf070be095eace9bac3b35efc13f8074c6b774124daec4ef54e52087ab7. 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/BK4DA2321970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e1c181923a02f2ebb4228cc8334705b5d1dffb1de107148f988d7e6d31b626. 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/ES5022302366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275977a36a5f7167a2679e8f194879e2ee9b77ea9ee2412580b531bd3cf20791. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5BU2262109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8fa5833a89de6b8d6f88152ff71976e25979bebb51eb66d9487ecb53880459. 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/ES5152400565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f96c67daf256ebded9a2aa31b50e49dba6ecafa20c82bd87505030cb8154194. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE5752493516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccc5a2ae907cef3c2d351b2473571b82ca4fda3382f1db193ab8d936a6c1bcf. 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/SE6QE2420307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6139fd32f00f4f85498669d08bd4a76071b65af0aef9115e4748fc270b699035. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5702201879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cfc9bd2e23e2555c32be02c697e6b17af4a8af92abe2d62affaa42bade2941. 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/ESUM72301247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5085561df1111e6f0943098d345e7c232255ae7ea63235eeae99aac39dd896e2. 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/ESUM72300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cfc9bd2e23e2555c32be02c697e6b17af4a8af92abe2d62affaa42bade2941. 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/ESUM72301247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5085561df1111e6f0943098d345e7c232255ae7ea63235eeae99aac39dd896e2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ESUM72300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b03e8bd53979ee5e5b6cdb44a150b7971db3c5746269d80feb5fe51d79139a9. 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/ESUM72200205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6139fd32f00f4f85498669d08bd4a76071b65af0aef9115e4748fc270b699035. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:07:41Z), 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/ES5702201879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a478da0792eac3a5a7e2f77f153a2524c491220bf3ef3a57466d42cfbd0536. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6XW2214470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861d13e23874c92709aae0f9c305434c2cf5409a2de268bb263ff32be8fe72ee. 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/ES5152401248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030a27411dc121b7a320ba142398f2dbcf096c0548ebc20e18b806327625581c. 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/SE6QE2436364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd546d1d204ebce5c0064c2e6c36f38ba6e95af5013d8d73178f0b6cdee859b3c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5022301289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e514b17a603396993258e38b71635b011cceb6f5d88c9615f7632325631db26. 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/ES5022301308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12348f10b1001497305a95440b47b1dee93c669f755f18072df44a050fefae0. 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/ES5022301375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13909b4f4d65373a17b6ddcc1a869256ab5a2a419029fb14f4d5ae7ce2a6bea. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5022301377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28cd5f6b014568f39f6d531394c4416535f077211f9e618324a55213415ec25. 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/ES5022301315.