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 0x1eb94c1c2f1d681092c62cdc76c0b8738cc516c0982c2748651f4b2b7da06738. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1deba12b-bfa4-4269-8b7f-f42c52af71b7.json and https://artists.proofprofile.net/proofs/artist/1deba12b-bfa4-4269-8b7f-f42c52af71b7.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 0x91042b876a6379aef8aca6b1e954baff1a86c1ed0423dc8b532f30fc8e336962. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/MX2832433023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0a4baad65550e2b9354d87ed0ac9c1855ae262d0b465d01d2621d814caf986. 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/MX2832433024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667b65328c8830d7ec77f58b615b431e5c9d75af4cfe12debb20db6a7cbd2cc7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:11:15Z), 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/MX2832433025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2963211c74f582ec90ae02c37a3aa538291c7bc98da6236ad5a3385d215178a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/MX2832433026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd592935f101c06380482eec5e49a88de504311225ac660551bc4bc5d2dcd08b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/MX2832433027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02612db343ad8b3f61118233d3f20301a441a7745ee98d344cf0f5fc8d90ff44. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/MX2832433028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5482c6c4412db428eb2093be404fab304a0ec22211a6c0d0fc0c8c7bc08d06c2. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/MX2832433030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a40812466b3bd88fc254d6fccd2066c390173955cfbf17d9f6645b32b3ec546. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/MX2832433031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4e39e28975dc75cd6e215ac7e540bca8f13d2d6df3cfa17d6939cc18577fa3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/MX2832433032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb55022ac0e9b0888b8f9df85a1dae308772c54335f625070002053b93b0a68. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/MX2832433033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966c9a368f1866f03f4b996f0a04e7f7fddfb09c20bcc32c91fec85b4d3870fc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/MX2832514700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f2f541605820bb3d367521aa4bcbd87721e34207c8a7ffb17b0adaef090d93. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/MX2832514695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994119e372a9eafd323806b93b33396d18fc866586c5b42448eb41932eb6c226. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/MX2832514696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde643817c54f028b6aa3919a01be6a39b25b24f79027c6265a2cff153859fac9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/MX2832514697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451f6e8101f2d5afc8162728274b6e5b32c034e1af1bf090575cd9b41b68ec45. 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/MX2832514698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cce89301c4b27f6120c6e873efafa045fb9b3fa9c169b68ff8b6466165ffa1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/MX2832514691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bfce402f078949e6a0211320491a52ccb31ad9c60a3c50f625cc167568e461. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/MX2832514692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f66beec8c3eaff7257d402dd7aab1526b63eecf61323e845babb3de455b742a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/MX2832514693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ebc599225685c27a62a6c721549f06762acaaa9f005b26bc47cede0fc6c603. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/MX2832514694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c9dbb33f997157522d217ddef1ad838a2cfe5fb2db91894e61b9e46f3a4835. 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/MX2832514699.