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 0xadc05ada07e721b3779b0f97d2086e853733d66cbeb38740a68e257acb07a1a3. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb76d26d-779b-4bdc-852c-fe0b215fbe89.json and https://artists.proofprofile.net/proofs/artist/fb76d26d-779b-4bdc-852c-fe0b215fbe89.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 0xb5ce7ec4285f9ee7c5628d508893377b0a342f93abfb9b7484c22420b5f095a7. 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/BXGQ62300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe050880acf127958bc561cdd6b02cfcd4404144761a6b726af5cce29ccea91f8. 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/BXGQ62300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2403827eeac280cb3b109ed89ec604f76aa457f62f36318180b692e2bfff0714. 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/BXGQ62300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39a4252b2cf455ded0cabc3fe0b872c9ea356e36fd0e3eae744e4de57122ae0. 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/BXGQ62300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb35eeccfb077c5d657c784d8430c3112ff18ed3ff1bf8e22cf3cce5b77bb60f. 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/BXB092200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbf266cd9801292c55ab0fe998c05d03b3c30147ff9638808eac5e5b3e26ea1. 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/BC6M22420620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337c0761e21e95423a962290bbcc7f6e1749bb6268d46ba9e8fffcb514105b6b. 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/BC6M22420619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267fdd0abc5b7caecbd50aca2f71850a8c6ab4988688942ab05d4857dbe1698b. 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/BCSBS2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf888b77324cfaedcd8490d80b2b28d3e8e37db05e7373af42e25ab0d2441d3a. 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/BC6M22420617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d03bd7617ca7901c1742e02a315b4655d047d8767fd2e6cf951d819db81014e. 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/BC6M22420616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb246180535f0a9387253b67534aa3478237f60c969459296f32a4cb4f8413b7e. 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/BC6M22420614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6714524af971769cbbb907fae85d001511718dabfcf5749fe53c5306a7efc7. 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/BC6M22420612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f6a0f3fe48544127146bde182376a02f8fbf0ee1c9f69af2ec40f78a5714a0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BC6M22420608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe526cd6d2da508db3e4d3a552f201d87da81dc11eea8c24663eedda63435fd5. 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/BC6M22420610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fc2860555fc6822dc2cfb9d780352283d3ebd411dc210b90486fc3b1846341. 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/BC6M22420607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3ac46c50328a2c2a73709b45df28468dce30b59095f3fe8f135eed6dd1a5cc. 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/BC6M22422478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7579fcd804e185f8f7ffbc1251cd7f0c5b6dbc46de62a4ffb41ef36401f94134. 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/BC6M22420606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4991bb419b62a5c6e7c283d6916a8b53e5fd076dd9358af747bbb53e901b50e4. 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/BC1BN2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a76c228bd111a09021a1954180690b58db6a127bf82459cd53e35f8ec0e66fa. 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/BXUO62400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d0fd8896e883bc2592d9a73d22dd04e5b6bc51005ed494403cb19f270647fe. 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/BXUO62400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f5b17d0a5acc274b5dc40107b7d0fe13a599b32795e64facaf1f53c4383574. 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/BXUO62400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccad89746af2199d0b215526cf894e378e55037f10e40a86eb6a42e28bedcd2. 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/QZNJV2388357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b5b717a692472b2273592a604d7be2e53736538121a33e74c70d2f0a7c8ca3. 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/QZNJV2388358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320a0c609887c3155a53cdde213ff8eeae79e74857280d2838a7ff2ee6f611ca. 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/QZNJV2388359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc858b4d43ca643157018ec2fa8eccb7208b0abfbd4247435cebd242d55fe83. 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/QZNJV2388360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e6bae412bb07273e6d38a4977ef0349ef1ee7be40bc8ba7277d95dbd7cffe5. 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/QZNJV2388361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d17df104c5e7bc3328441f0ed5d3b8cd91640d73319a2c6b272d5d9f04a033. 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/QZNJV2388362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d0fd8896e883bc2592d9a73d22dd04e5b6bc51005ed494403cb19f270647fe. 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/BXUO62400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0012e4615b8984c98ad51c27f663e29c97df6a88d0445c17ca3a04fc25380e. 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/BXIV82443417.