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 0xddd6dcec76e292dd47b6952c0ef8748996ac5695c4d1d7d191b0970f71f1cb0e. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/986ca6e0-6988-420d-a95b-b6e1fdef5728.json and https://artists.proofprofile.net/proofs/artist/986ca6e0-6988-420d-a95b-b6e1fdef5728.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 0xd817c12b1372d49fcbae1f9b6b1fba9b8ede54ed281c5191bb9f46f62d8a782f. 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/USCGJ1433245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa664d4fdae10a2358eebc98d2972f3a1d9ba5152c5df9717adb7dc72898cec3d. 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/GB2LD1700256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af081a4c529ea2c61bf87b9aefb40c02de724651fa7532f9ae1f7f9c8fa7781. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLAM41200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ec0b162c74fbd2d9dda9aa9c84dd9343c028be9785eadd67a15cb9abec1a17. 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/GB2LD1700252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78f4df3109cd63e15a3b26eac617a439c37cfd7eb33f970b05fcc85c5d0358e. 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/GB2LD1700073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3800dae3d3ead054ea9ce04e9c39f8bdc9274c29eec4b6288522e69929cb7ce4. 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/GB2LD1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902d80ed7e906635d76d75b1fa0819a73a7cbd4552b66705c5197a8c59fa2e71. 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/GB2LD1700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a273be41e975f8ec9db57daefbc121e78fb640849deea4ea7eed95ee1bf9df. 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/GB2LD1700090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06215f138826b8a352ccdab07d54759dafcef6f27284fbe01fda93c4b385f9da. 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/GB2LD1700140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de6b42b4c99b5c9172d08c252bcff5e44063819d49b3fe24d958136cd36c159. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GB2LD1700253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02db8c3909b8e0db1362eb986fa3a2c914f1d9389ab1b679f447dc9bbe29f229. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GB2LD1700062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936ab269b15df5b076ffb37f2f60ac4c5d3f7ba13018b27c18780d9e3463ee0f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GB2LD1700083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa664d4fdae10a2358eebc98d2972f3a1d9ba5152c5df9717adb7dc72898cec3d. 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/GB2LD1700256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe757e29b88ba1f09cd5944a1b44abe2f4a33e9a4c0ea83d7414d7d2044a9901. 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/GB2LD1700257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475ee618f61c7b410a64e8e9b94734c17ffff7fdaa65a9c8ddc4e94ae8027eef. 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/GB2LD1700129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f17d58c530b15642911b952c154ea1e668a34f4f9296776bc6f406d996afb74. 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/GB2LD0902607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05244f4e1b239b57bf9dacef5f7f8424bb20b921d69ccd5019a59c760bd457e6. 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/NLAR11700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1cbfac1f1df6b889bf7572d039bbfe05f84e25d6e117a999d4b27f3bafdba7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLAR11700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf331036c1ee0b46f4c6f2745b7434246bd7c5c32ffb82df53e38c9cf5c7609b5. 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/GBKQU1379570.