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 0x72a5a89360f406bd0475037df0e5c73fce2459f16678ce35e288594609f4574e. 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/c81625aa-ae29-4917-a0d8-603e5c9f3be0.json and https://artists.proofprofile.net/proofs/artist/c81625aa-ae29-4917-a0d8-603e5c9f3be0.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 0xa33a4af49bc46c4b916cadd297e22389a63219afdc967b3275a9701a2d59880f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWZ2550947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e0b6bfffbacf06bee0d7fb15451f6b86a1efc7775b1a678ff9e6aa12e786e7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWZ2550949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58632a55f5ffb9a660bda8709f8a4409b15893d66a8f4b26deca8e8814da537. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWZ2591507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a3fb36d9243596df14d9767d675da3faa26637ec5ea23dcd525550fcf4ea05. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZPLR2539037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c11287d425a51892b6af86abfa1b79b775bf3c93c527623d412d06299728bab. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZRP52548047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a16a5769ec04437346cc6bcc42d292de25420879308d75c4bebd6a8de5e5e30. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZTAT2529612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e78f3f5486d0dcae1eb0762b6898d1321ebeb95972183cec72552a0576e557. 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/QZTAX2552475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3120e514d976f073505fe9856e85e544199be98e8c24a5021557d82f496a63. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:47:32Z), 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/QZTAY2561101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576d85a16bf7d18384372371b7ff7bf66dc797b93764a4b35c5c0bcb5d0af657. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTAZ2505657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb29c03bf6fed92904c3ac1476806d1ce87aba8349537fbf9dd9abad70c02f9. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:36Z), 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/QZTAZ2599310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b3f7075f7e08e655edf47cf19f315095da81274dcaeab322754cb94766fe84. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZTB32533501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5416d439274e07ecbcf2278a951305798b1f5c16f38bf6c8be781eb56273e3aa. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB52506081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d59a67b0ffa21ae64cc45840ad2a7924dc4d80df853435a2cfa430b759c179. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:22:29Z), 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/QZTB72582454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d0e3b209e1c0ae759b8892bc669b4c4d8b05f4070d9506ad3732b8908df870. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:22:32Z), 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/QZTB92571402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c81e7eee52edd655b0f2cc06cdef57d2fe993ec2df2618a3f5b27b5635bdd0a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTBB2544303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fe4e2d70800678928e952071115c7fceec5ece14b04c3c45b742bde0e3aa54. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFG2528166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaa73f97eb1a81c467c05973d6968deb19af310e1d342be85bf78e4d9eaabc8. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZWFH2580450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e13ff64221bce2837abab4b2d9f18bdf9601c4178928b410347c6bdd349391. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWFN2592392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fd964b1f5f6bb241308f7be0defc1ef65f97d8cba9346230c0368e9c182dbc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZWFT2595253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8b55b0218ff44497ab160da2373f61fab57ce3753510bd1349d61a3490487f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZWFX2516986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c2a697d14972f057d3d0d36cd2c7e96bf1802a8f3c2ddf72f1a0a005c97aae. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZZ762503938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740740e290b5844d8867d4a0eb1800a83aaec054b59aaf561c04730629106169. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZZ7N2552787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733227174412b64ce25685b38e0dab6bdd8e61b13e74da76af3bf6e13b43294d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZZ7R2589293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa518e1d9309e9b9db865b67cdb6c80401d0bf064716f49e9c541da48c636ff1e. 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/QZZ7X2579859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65627ab4a1e00bbf5dceeda42718eb988298a62d20a62dfb9309bafc76b62c36. 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/QT3EX2599138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3a520151797ec8a97a7984db051ffd38c08d013b1afd9d62ed3097fca246d7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QT3F22556838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a07e7dff457d5b7b679b2d95c23e336ce7690a60b117dd57e1bb04ecd1ad316. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:12:59Z), 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/QT3F32519512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5188d54cbcb1f89e67ece33a9d639a3a446ec0c299ff2091079a5fd6604a8667. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:08:10Z), 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/QT3F62553544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf577fa2256faad7fc97a9bffbcdf8eb4640f58614cd12023dff62975bbf7a11. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT3F82517030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec58e64355f8b36ca5d5260e2aa4595772c54b9ea27a75f4893a8325cec77e0c. 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/QT3F82541987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2704831b4924bc0f8cd4da7112022208e1f99db085f91de01f082121bada8ff9. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:27:58Z), 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/QT3FA2565232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf520af00fc08a676a9e6fd0bca2f94e4656e3ecdc1e3e9c15dd9401b25e3690c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT3FB2576195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7cfe8fb15426dfd6c5d5709dc67db6bf16b21096a3c7ea9ea9e3a5766b302d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT3FE2557653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2f07eb40e128238f05e18c382f7d305829ff081c182b7c1babd1ef21e46414. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:04:03Z), 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/QT3FF2578817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30800caf91c8e19ca843eebb5c98872d7078779f88e1ab4dc1a61c83becab992. 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/QT3FG2588864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf1a250bdb96fef8df276583020d27e7eea827e9e247b202c4459474d8ff19e. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:01:51Z), 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/QT6E82539813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707f6c5d95b7036e3f2ca491df9addbb86f3463947cbc25a417446a1545baad3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QT6EF2526096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7425f3edfb5b9a36683b5336bdc28be8d2fe1484593db712eb52b69d2b09066b. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:39:33Z), 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/QT6EV2532286.