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 0x79b4b68816ca1ac59cdcf581864a074e5b2c224cd01875483f38139ef2132609. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34eb0729-2721-4063-b4d7-b58bb90f1b9a.json and https://artists.proofprofile.net/proofs/artist/34eb0729-2721-4063-b4d7-b58bb90f1b9a.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 0x98f25ec3576ea00b125170879cdcd70d83894e5735fe549b7b8ef95c293caad1. 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/QZ5AB2450742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f11d0500d166b00e3a42f1bdcc4d79392378b313f93e7a7f42f6e26a1250921. 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/QZMZ92345307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb5f7145264a5a2e327fbe2ab98ede9ac80342aedc82eb080b9800b6a6eece0. 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/QZNJW2024245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc2b18b995828edd10b3cac2bc27da9c3398a2a33dd69ff099a4094e3b7566b. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZNJW2024247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898c49279aca1a74f0edf6238a9d1fa047b52bbbe53ea94ebac2d47fbbd8ec14. 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/QZNJW2024249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaec4d2ad8a5a47e26b6f762e44cb43970436f1b276a9f3e3787477c94ec3e54. 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/QZNJW2024253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b43a48cec76ab8d6070ef133244f5e0efe568a24786614938f7debabd97713e. 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/QZNJW2024254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2016aec4e21590d6b97445c89d0c1b588e1520f78d1f280f866bf741e4bb1080. 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/QZTVM2484205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120b8f5b5f01a266b0ec442265b24d10822b0557c0ca0b4cff7e3e28f76ff506. 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/QZNJZ2455711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd9ff3e41c4bd46eaa6d792f5a7bb44560137f81d972fa025869781c7fc3997. 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/QZNJZ2495674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0d6571998fe9ee9ee3948cc534378542748ffecd7e4caa08f7e418322c21bb. 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/QZNJV2499205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0d6571998fe9ee9ee3948cc534378542748ffecd7e4caa08f7e418322c21bb. 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/QZNJV2499205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfc9a4a93662e1933223492360295b858ab3599519f5e74391b9e01b865d4b5. 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/QZ5AB2450738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfc9a4a93662e1933223492360295b858ab3599519f5e74391b9e01b865d4b5. 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/QZ5AB2450738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1be267888d4aa6b42a1dadf6bac70271797b28aebf92ad005015b71d3a48ae. 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/QZ5AB2450739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856cdcdca4e1078effb1d6877144b3d3a3852ba749d3a5a3f48e04ab86388410. 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/QZ5AB2450740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f25ec3576ea00b125170879cdcd70d83894e5735fe549b7b8ef95c293caad1. 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/QZ5AB2450742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cae76a65b2aad600828622e734a16b053fcd959691bf67769273e962967d439. 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/QZ5AB2435732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24939264c2103cec11c1b8f16d1515ea9aafd0b644c29bdd1b6d21d08578ee78. 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/QZW9L2328911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89930f1793024097fab97775de1c4cacc57547e695d6b011e4081a73cb459b39. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QZTVM2356002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211f6294c9e94e85db845d061ba4861421ebd791edbe25dabe11379ecb9a6c49. 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/QZNJX2383858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe978145bbeb2e10725c01fc48e8c433ffb26364668c9d15c26a81155951cd0. 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/QZK6F2318088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5f067d206f7a64202ac3762263bc4289d480daf33ef2e02c58ddec5b1fdb64. 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/QZ5AB2302939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5f067d206f7a64202ac3762263bc4289d480daf33ef2e02c58ddec5b1fdb64. 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/QZ5AB2302939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbe800dd18af3493d3e1f482aa9dd86402cc07a99b238e3b63b6518bfb90858. 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/QZNJV2262507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c31de2ea674448df2c9a137e730a292afba165b219c650d4132666d0eee778. 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/QZHZ62260201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf161b23c5c743485be54bca2074066bd6e0899fdf7a5d8b56adff4b47d4e2315. 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/QZHZ52286000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac19fe1189046ba4a26931a72477aad9dfda0492b7c8b0cd21d6bd674384eeb0. 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/QZGLM2217911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234c6febe0df5e89b52e6807c678b1cd98d740143da4fb9cab4d81fe8ac60a3d. 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/QZ5AB2230876.