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 0x527d96b9f21516880fbb9192abe2636fe5e7d64f0cb88ed7f054c4fb423ce463. 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/c47b31e3-b494-402c-9dcd-17f9256cd753.json and https://artists.proofprofile.net/proofs/artist/c47b31e3-b494-402c-9dcd-17f9256cd753.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 0x5d438420bbe96d0494ba30c0a38bebec7742dd68d847a71034dccf8cde80c7a2. 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/INJ221903520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4c4e8bffb20217742c79fef03d61e9c2806ec0b6a0701dd872b0a4a22ca512. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/INJ221905659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524ee3524b1de25825e2da9dc61e2a508507ae965d0d5dd6cec8d1d92033d3c7. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/INJ221906183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb4e4e9db9b84f7289bd56592dca318b5314a15902978a90e9e9d842c37b0fe. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/INJ221906224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8821ffbca6be89e73b838ab1d3040d48446eb93e598aab7f4e80c3d38d2a710. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/INJ221906291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08bcc1cbb4f2499e076be38823d71dd9f560866466fb9825488dfccd0ac50b5. 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/INJ221906323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1421652e7d68a5cb6deab7b2f776a10a106a1fa1abeb357c2737b933ff656414. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:10:44Z), 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/INJ221906324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7861aa108df43025863864f473d76975838640579c48de084fc70b5ebf272227. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/INJ221906410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0966e2ee07bc290b9c99366e691360c940de3716ac87b7c21b08180b729dd129. Chain 2 (Bitcoin): anchored in block 957826 (2026-07-13T08:56:09Z), 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/INJ221906627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be887d3a989be7eb0bb32eabc023ce33bda2509bb016a24689a2bde59440ad8. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:39:21Z), 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/INJ221906720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a271f02c2423ab27ec36d14e356d2097f73b89a3b5b0bf5aa5650680ecbec5f. 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/INJ221907057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0924e83bd397ba5301bcf647c423ed6722c70a4d323acdade34e8bdf273dbdb0. 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/INJ221907115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fb19d45ddd18f6b907b430b6db68664722f54e316fba71954b3c2802555f25. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/INJ221907087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7561d6df36485c6b7915768212918eed81336df6470d7f19da0c357b199583f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/INJ221907263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e15d2c1997ce5adeb90a4271e8a27a8795abc9a917aca28f8b2cad474a4d44. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:39:40Z), 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/INJ221907939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd606c0212647d18f4cb31955d89e786b3f7b45bceea53965c7e8c3d1102b9db. 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/INJ221908119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1918683a7032df2b2dc0c32c9243f89b3ed8ebc50f00e3231c05e2f3598768e7. 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/INJ221908187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fac1f788cba4a965cc7bc5b8efdd3cd4212e2e45fe7166fca3a379d2cd3601. 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/INJ221908250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b88a8e32a74f5d029ee8adf9abb3afe6345b357906fb24bf6d1c9db827da9f. 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/INJ221908254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cc25eff9ab5431032328c633f30bcb1c63fbfb35849db12ac57f47ca192f8d. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/INJ221908256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc2c939579baa158d7ce718c6d4fc564b45b16ad4592d18d9e2b8587349c6c5. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/INJ221908294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb3883bd527a5e3473caa8509ffc92caaf17f37e169e488e8fb31698823679d. 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/INJ221908509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172351559a970b6b00dd94c69d726d554a57aa180c3de4a3e5693d948a8e61a2. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:58:16Z), 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/INJ221908559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46ee8300ecdd0ad2e79e3271260c931bf5eb5fe4ea3bf3b5956306d2d2642fd. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/INJ221908560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267d97c0e3d82a7043e08709fed5cd358f4c5bcf72a0b1a487b4627334d25b14. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:05:06Z), 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/INJ221908562.