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 0x3b4b3ed9522a69c4dd5c0e37db36e9bdb3b34c80bd97a630378e587619d6f832. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62deef45-34f1-41c0-b7b7-c1796262196b.json and https://artists.proofprofile.net/proofs/artist/62deef45-34f1-41c0-b7b7-c1796262196b.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 0x8b65236a23d02c09263b228f36791a7e206dde403ee74bd2e3c2094e73c056cd. 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/USWL12301038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd610ebdbaa46961cf4f5dd1a1325d93b41eb5a16938f86438eb3ac84e9f315fc. 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/USWL12301031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8595fb1628133aff7fc384d3a90d38a754a42a0574be9df406ced5ee367fcd39. 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/USWL12301032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5d81b9c906305683d3a937594c7367683835b4a6f01e37ca2107b94ab0ca84. 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/USWL12301036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf527109ada17e3e0568803e8ab406aacfdf5805001ae7c81ab8f306dc20e95bd. 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/USWL12301030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4787494f498fec45432b786b7a8c152744ad35a57e40f58363ec93c85ec7a0. 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/USWL12301037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08df775adf56ee6340a0e0babcc3d3f1194a6fdee126efeb97d0228ade0f01b. 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/USWL12301035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018b145cb75e4e5e5520b8def6ebbf0611055b387799f435b93e45e1f8656357. 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/USWL12301028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe04d733d99efa219ac0f95246889d8435509b4ba5ae576124eeddad82aea4b. 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/USWL12301027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac807329ef140261ed9a120c4444e28b54ef1f1ee5e06ca6367c42d69825ef8. 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/USWL12301098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3fce111e3ccd58c957d2af30d22ffc94641471a6b23fb3af7bc92399a4d762. 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/QZ9QQ2200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e602df086587d74e641f4fc569f131b70532f501aa73d25b4c74069f0551655. 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/QZ9QQ2300237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349604a575aab031672ebbd8e1526ce7fd965cc5fc56b1f388feeaf44970346d. 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/QZ9QQ2300315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91844f36038b58633edbe8e220d80da83ef17863be6a2f6c87c530bea735c87. 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/USWL12301034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a0ac5ae696cf1f42ed08bd93a90baa02b2c71bf15e0c73b6c3c15d2f438987. 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/USWL12301033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6b618dc417a2171fd95d98e9090e69e0c63e9668e089d7f1c4d9f862c17723. 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/MXF012300645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8733d17cfa533b6a3ad51439a8ec0517696b1cb6b6da0b1442149d3175e1b8. 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/USA2P2437195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed15d552a0b3036064e1fb6a1285e8b38d62a0c9aab6656219d8d30070d8668. 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/USA2P2421962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199b1d165ac21922e7c57bdc548d620523ea42eed35e5abb73c3e5cd5e5e46a2. 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/QZFYY2436637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fc57213edc5b56f44baab1854230123a038705dbf5250bfd26da7e51e38fab. 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/QZTBB2316414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7415f53db1dc712ac9adc86e73e2bec5f9495da67f3f53aeec25fc87a6a5ce20. 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/QZK6P2212671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015ad527a1e0c98f63eb23a5f1531467d41bb2111ea0ed6f0d799ca959ccb34e. 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/QZDA42295631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafedfe533aaf4295df072141d85e97e6931043703496fccc98ffdb58bb20b43. 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/USA2P2520599.