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 0xe1435dc5fa8dff0121d0beb06c5f9eb27b418f358c4fc8eead829ee8244a2979. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eed72d1e-2c14-4fe2-ac93-b2bd1916f1ad.json and https://artists.proofprofile.net/proofs/artist/eed72d1e-2c14-4fe2-ac93-b2bd1916f1ad.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 0xd3abf113bb2ec2801f8095c7dfe8142385d9174b95034c878b798c9cf8c05e17. 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/QZWV32397342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fe399d0d7317de60e401663498dff14e0d422cdf9165c43f6304192c1bc04f. 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/QZWDE2383034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ed67bedc8fef7cb24882f767157ef72aa937a4e44e840fbf08834be148db08. 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/QZWDD2339215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b698f9962b4d891137058c7a6c8f8fcea6ff80d716c0bbe8b8553a2e224399. 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/USLZJ2322601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1911650ddcd34e4415df4ce7802ba81a263626d51b30f95fd048c17a543e4bf. 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/QZWDD2231864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9d8e0a4a0ff69850b96693e5d32af26d0baabe8a29eb6d74072876df71b830. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/GBRKQ2250103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6423fac7c366dc586497ba0e4198c341897e37c63e8f345f275e9777087f02d1. 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/GBRKQ2265528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d870222782753ed06c499db8a1245d006a411fcea9a97e14fec7b4124c29d50. 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/USLZJ2248669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1c35d329b46e8ab001b0371c6e67e8f44675c0fcfeff980d0e3f3041dc7e4b. 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/USLZJ2283206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212c9c1bb688bb43151e8e166baebf202d650d4a1638077bc8202a0cc85d3083. 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/GBRKQ2265573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b2b6698996e4f0f50d60dad9101f64678fcbd7ba206dcbdb94152128c29857. 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/GBRKQ2265574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9d8e0a4a0ff69850b96693e5d32af26d0baabe8a29eb6d74072876df71b830. 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/GBRKQ2250103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1c35d329b46e8ab001b0371c6e67e8f44675c0fcfeff980d0e3f3041dc7e4b. 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/USLZJ2283206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d870222782753ed06c499db8a1245d006a411fcea9a97e14fec7b4124c29d50. 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/USLZJ2248669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43848f15b47c5e973f9bb12206867ac81f3e5b8b4677f7bae019b2440f283c87. 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/DEVN52000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9175f418486c74aa782de031549c939f30b7d0fbbc9c2c3edeb03d5176e4b54. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEVN52000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2de6a0e901da71c4293f4e60a010b60bca93e333eabaa19cc5c499cf29a3920. 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/DEVN51900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d198da7b3a38a4c82a98dd18dbe64d23652cc5abf77b369232c6fb487718aca. 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/DEVN52000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe3e31d2fcd0e1d15869bdcbe51eac59dd3bd1b13c4fd1dc8f13d99993bbe0e. 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/DEVN52000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b243fd110ef4f9b95cdf1cf92fc8d92ecfc89a32cf79ca0b10b8484e5f892cf. 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/DEVN52000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3509658124de3ab906478bedfada05ccd519cf6a78b16253a62f5469870e3ff7. 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/DEVN52000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09afd179a978ffdabda10e2a369de53922d23bb4d761a268b28748411441aae9. 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/DEVN52000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde63a033e4dc68fa92c58b684bb583576adbf0ad5d190496185340cebbd7929a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA51851760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb7a533766370d80ffb471f1a542712610ecbfc270df7f91b2b6f0305bef66d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZANL1798554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a95187a996514eab2be7ab2a55123270655c0b1d300c84a9bbfafa958cb06d9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM2PV1758635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90597c69025a7c01e4a6536e6f606cc0f27ec42eb6a153298f59f1f9d31477d8. 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/QZ4JJ1791451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfffaa006fb038bec5acd35805a99f534328b2fdef9d85e87c97c8c97805cd48. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ4JJ1791452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b17c6dbc84c7105fcd4d413dad3c0058e1b2ff264a9b3f81588e3aa901c6ceb. 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/QZ4JJ1791453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90d4e8910c84f2f8240c7829068bcae3ca7818bb5a9cc16172f3eb6cf23efa2. 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/QZ4JJ1791454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe97a63a88209c16a25bc4f1b4a1abdb027f127c1ea1f7881e607dbec23559f. 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/QZ4JJ1791455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7547bddc802b7e2438e4382b73bfa79c0913dbf3a4f70f440c1c78add8bea6. 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/QZ4JJ1791456.