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 0x61a18f1f1664cc29b39c447fb45c54a6f44c5374994f77dae4f1fc082e7aec95. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc880016-2c82-4214-b94f-6d5111bd6aaf.json and https://artists.proofprofile.net/proofs/artist/dc880016-2c82-4214-b94f-6d5111bd6aaf.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 0x486e4e53c2716ebd43c24a273de1d13ac3d4e97065f27daeaaf8f2823cfa23c7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:45:35Z), 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/TCJPX2332812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c9cd4daf509ebf5a975128392825b950332d987653489d6f4c164f057516e9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPX2332823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed1c8ae15f3525edceeb516f9383f9fb9541044f1fecab7e14fdba6f1524e78. 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/TCJPX2332829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dbf066cced2229513bd1ad8b45ffe0f2b3c1f55c393f88935c61d8abde1e39. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:10:58Z), 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/TCJPX2332831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b50649d2898af1f9534ab9d9dcecac21a59ce0a15d03d77c255bfe317e4f1ba. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPX2332834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca37deb08c9120617fc877451db437c518dcaa95f5b1aeae23a78d6960b53163. 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/TCJPB2459763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7961d82c52b7ffe4041a442cb0369faa365e5e3177797d1634539b68a163ae. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/TCJPB2459772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70305a57f2f36ff71e29be34d76dd129d2e48c0fd153f0d0a10c30df7012492e. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:47:01Z), 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/TCJPB2459776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90044a79c91f3a03e29b60623948d4b8175388f4fde18286067b199e510c05b. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCJPB2459782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d641240e1315aca2cf53de7c3ab9557cb01d964856c643ef231c75cd00490b9. 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/TCJPB2459787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bfa7f33a9f610216bf85d544aaac3470509946fadf0db5d7626a05163238c0. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:32:35Z), 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/TCJPB2459791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afaec8b27657f2c5bc7d728611590e9da004817ceab7e874b4eb97ee31ddff2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCJPF2580948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dff215bdcf0f643af3e3e7fae33a253d69b58fc423cd2df1b64a654dc11ffa. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/TCJPF2580970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658013d5335cbbaa95a0e975ef3b3bb3764f8ddf62960032ee95b9191e77c1cc. 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/TCJPK2580914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24cbcbd503798b1e227dc0a36ba015ea67383acde6a4c7e0556c93ff7ec2de3. 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/TCJPK2579660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf49897310756270b8f40a8b707597d81cd5df5d33b4531316fcf5e138752949. 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/TCJPK2580936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023a960b2aff73fcf98aae11be699345034232ba85f6b9c5e4245f3bfe3549b3. 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/TCJPK2580955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75afd26ac0ab31a831115ecafd1c968d52261b791db8f7936f43486feb7e67e. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TCJPK2580963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a2cef237f25583c7f1c253841efaa8d07a773b4d2546062cd2f54a32465cf7. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/TCJPK2580972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403898bfbcd64f2f8c05ef37ffaaabc197a1267be87a90c0e48231defa70e767. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:34:22Z), 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/TCJPK2580979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975feecf3289b1090e3e72f4784cb1c69c7f1649bb5cd0ca1cf83f3b9559ed54. 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/TCJPK2581101.