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 0xc5a86c6213969073963f7487dc352635d3983aebac7f145051423255ef83d82c. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4735980-1939-4944-b593-159b37f1bd21.json and https://artists.proofprofile.net/proofs/artist/c4735980-1939-4944-b593-159b37f1bd21.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 0x8d8f88f07c44aa4739cf60375266a38382053f38599fe896b73bcf8cc7467a82. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QT3F22537227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e97f2425ef25f5accea9b504b19917b422f590fdc66bef11fd57ccb810d4c6d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3F22537244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0e9c01d7bbedb4c9a3d9a2e62ff90f49a597fd55f7de4be9e6eaec929b5236. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:06:32Z), 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/QT3F22537226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7b4517851d6e1afd43606ace15d06dad5762eb75e2630f589ca9993b3b4592. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:49:56Z), 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/QT3F22537221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fd19272301a1b060ac31cf253e416bdad3614bbb09172097651a90886316af. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QT3F42562679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e3b796c2ae2c870202f2997909b49fccd849d668c014a98706516581aa3b0b. 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/QT3F42564391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42734744806492aceaffb2d8824edffc427e0472b6a149c95c061e07e4712136. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QT3F42564377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843fb3062ee138b92a73959bb0ba036b521bb84943f0b340b0e7db012c45814c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT3F42564399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524e3ac5903721d70e9a00563d9b92fc832645590bb3c8ea00fe78418fd5b63b. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:23:12Z), 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/QT3F42564385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9db1c0f70a2c7890e6d06d0bc556fff09dd4647a6c5fe5825810950ddeb0150. 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/QT3F42564415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1539ce55bc4cfea38771418a1f06192d44b6670e7e5ddcb7e01b5ab77db5554a. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:35:28Z), 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/QT3F42564410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c0114001164f0fd4f6330fb22848b2ec34484951d769052b26048058dde2f7. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:03:58Z), 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/QT3F42564402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b956544b15c39964632efac37fc71ef7faa82fbfb23d98ee6ab4fdb922c494d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3F42564412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5da74ec97fa27b4bc4b8ae699822cc104c35c4730052b649e9bdc0d6533650e. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QT3F42592331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e29cec2328a320eecd1f95894e666d6933d981b49489e560d6a8ab0018f5af. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:29:47Z), 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/QT3F42595350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6131926d35702549174f8de34623594c23db50103b132342051b2f47e48c13cd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QT3F42597791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa889e69a0fbb207c1a42e1a7d3f71bee984da485a7d05b3f22f84dd0f58f52ff. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QT3F42597795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33f5c461d0eab484056371a0976cabbe60352d2e0ac34688652235327283722. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QT3F42597801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3571edbb958fe645e24ebcd2444bc8c1d9ec61c6ac67747ca834e56e8a2bdc11. 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/QT3F42597812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b9866304ea0713c721671a80fc6675d30e64e769fccf10551ee1171eccc058. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QT3F42597788.