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 0x0d8d7ec8dc3290488cfff9323852dce1f9d230186fa6f7ce6ef8f428c9ded7bc. 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/174ae5de-2806-4c52-b6e9-8b08c310263a.json and https://artists.proofprofile.net/proofs/artist/174ae5de-2806-4c52-b6e9-8b08c310263a.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 0x2ba2bd91c7c1e0e3f0a267f0ba42aa02c3443a45219e137145f7e02aa581947c. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/INA331000791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdecb318417544f1ec4b20c2f4e0efc2dc9119839b45e4dc786280944cf631b. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/INA331000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7145228b2165eb614589bfab61ee4c931c904471880f2b3a2bc82d6e795ef16d. 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/INA331000144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c030b2ef2627a25a1c57a1f0e6cdbacaaaebcae27be99f08f303f1582dd394a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/INA331000282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbf08ff754b4084870935c15fd221f155478031f87fafb73e14afd51012d52a. 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/INA331000284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa052d001f260beac189ad3f4d46446327a13363a7af643f50ebe48967b6d8e49. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:14:14Z), 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/INA332000598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013386fe063f9b8b09eab1200ba3b05254ec638dfdde5784b62d570b27e7c8fb. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/INA332000599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c87c47b02053b595c49bd6b77afe3944aa10b52770744cc17999bcacedfa72. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:23:14Z), 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/INA332000601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a37b94d057f37808e59d3e54d16bebca19a79cf48e2fd85ef5dd3fc52a9684. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/INA332000602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85eec4dd0d5f2a4a37f0b40182d1691912383b1e955aede1784cfe157d1fcb8b. 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/INA332000603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf971d424401556449b070e577062fec7e403a3b68d764d2d61a6a8a6fa8b81. 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/INA332000604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a9d85563f8dd9e4c6e321b07c1bc3f25e9de8226efca911a18e37870635f16. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/INA332000607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78249ba75af62d6c9f79538881b71f5bc4f90c34729c4f15e9d19ca79dc87ab. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/INA332000608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0be3d355caa8ca6b054d43e04bb8888905b91f506d2a283201ccadbdcf61e9. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:30:08Z), 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/INA332000610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeeddc25bac61ee61a28e2552a8b00d3e021737800eee6099f307b92a8fab16d. 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/INA332000611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0394636c27aae03c31713a113b911c6313977d46d902e055d07a5f2ecae7ff9. 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/INA332000614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c3f2ec5de884bf3d8d5b764c811105d997c59fb725d663ae613f19066b5900. 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/INA332000615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3242f29e8117e48b370c37a8549d8fe445c5957256accce4e60b10139a0263. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:21:22Z), 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/INA332000629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6d68e2a1fcf2f22c9578b22010c81d43decdacbb24c5e064869a2a9f8da1cf. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/INA332000630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b0f2c2cb6e3ac23745b136a8b70e961cf032b2f339db0cac05acbc6a413521. 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/INA332000635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d12c51ecc3319cd7035dcf87a7b8347b2ff1e049b6b0101df1582475753871. 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/INA332000641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0055236e99b7488c2822a69be3d974a7d1b4fa2734fca446d413660530c312f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/INA332000643.