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 0xc1e0413325877a3c74d4cd1afd57f4e8c257ce6a7ba3c7acdeb35738a7d743e4. 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/965a26d3-5c94-46d4-9a72-dc3d45ae0238.json and https://artists.proofprofile.net/proofs/artist/965a26d3-5c94-46d4-9a72-dc3d45ae0238.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 0x68080469c877751fcaec93020a28b991d8d70b204561b82ee11305acda4cf522. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZPLR2144775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d7f33c3cb994e2e091ae2b964916f1f0b1f784a553061dd439b3a4b4288b72. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZPLR2181482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd976be746e0dc67745cbbbeee5931a90c0212ca3607da5e061844e6d790a9ae9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZPLR2181483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7688aad092ded6cf093656f0aea842dba304278a8abf90bc109fc3f11ebf4402. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZPLR2181484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf53b39bdf4fbdd67578b64187ffb3160af392cc1ee3622e3789afadf72444c3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZPLR2181486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac827db3b56834e51c36b7ca357a04fdd4edf83063ca73a0235c1e0ca2d65ec8. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZFZ22260210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc761dd0ae3dc5d0e30fc273d53de6a5c93c1f2277af876bb3a26b743cc8cdc65. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWZ2543137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded6e76c53ec4b937c40dc47a600dbec71eeaabea49cdc0764c1f08374d902f7. 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/QZK6N2126510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a30d5d7d0de3e484e8c3698f1edecd66efb6057c53cbd5abac1ea45bf6fd36. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FRX762363771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343d0049a8477cf3b90e812bc4bb1542ec1cb39db27e7d10615abb8d0efda165. 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/DGA072384116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae7e2f68c00541d47c737af178c6397d0759830f673c0b5459c98df60525416. 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/DGA072384118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9732063bfe67566fb6260e3e52d7ffd92b848fb3ec9fa6aaa15cafe8eb3afb75. 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/DGA072384119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a575de75cdfd8b18dc6726aaecc90f52de667668750af5bb48c7d61ee45bf3. 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/DGA072384120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5103fb1780e28bc47e144e75f59d80e250d5a0434316bc744b91462d7bfb4916. 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/DGA072384122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f2893f5252c4dda5ead2c449efaecc49066c40013e76c4cad8d8e8b57a9735. 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/DGA072384123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfdc24178384f4d851c92b02f0c07a2f1e52218dc09e5a11898fad3663e633d. 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/DGA072384124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7351cecf57893eb56503485acf498d2ec4b6e84df434cc8f0cf7b60eaaf7e841. 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/DGA072384125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc70ca698f8fee8666979e91302892bc65de8f8396b3fd45ca44f2ad78086b7. 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/DGA072384126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d31605aff958d6c07773d35cda2d4009aa583405930e64b84204b7194d10474. 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/DGA072342731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edc35da4ee87c86537e797f57b2d3e32c4ae0837ddbd01badab498b63de521a. 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/DGA072384127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6546b8e9c1c31254996a624203e545eb6767111ec9d88f9672a94adeea72d3da. 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/DGA072384128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23230a85c96e14e2cf85e9969f9d4814795fc8064085443d6ab51c63cb7accf. 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/DGA072384129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c423f91d80782c81f10e3b38077767e704972955531cc7d44f68ade86775edf. 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/FR10S2335986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225791de5b4746e77914586022cf5e717619a8945bfeb162856b789f780f5a22. 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/QZNWU2289961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b978dc087a662afd99f1fe8203fd5d4f1cf6cc571aef9f7860c90cb1a14ebb8. 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/DGA072384130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d31605aff958d6c07773d35cda2d4009aa583405930e64b84204b7194d10474. 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/DGA072342731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c423f91d80782c81f10e3b38077767e704972955531cc7d44f68ade86775edf. 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/FR10S2335986.