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 0xad639e096b283af9f6b3f99ae96d11e6f48ac998401288ced22edb6ee1045c13. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac28f15a-011f-4e04-8318-3db091c1a288.json and https://artists.proofprofile.net/proofs/artist/ac28f15a-011f-4e04-8318-3db091c1a288.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 0x9bcf6b7d55bdb4a70fe5b3239844c369febffd64c057f16ec8169ac1e82166c3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPW462433743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e0b57054aa2c7342875929ea7dd748901521912e7d34380c6dc962562158b8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPW462433744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8742a5a9bc733a8e1a6cba8dfdb738bd41f2f105872fca65ae9b1922bee3d560. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:39:45Z), 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/JPW462433745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1f12b46bf5e4613e77d0fc14e33adabd8605e5f260e73de5182345cc361913. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPW462439357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2ddb59bb1cbd7052069230d57beef4c600d06e93d1fcdddf0b5d829a3d9d9a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/JPW462439358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ec8666856b99e34e08c6edad1cc099e9711b5890e7cebacd4b58fbb1f54a4c. 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/JPW462439359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef9b2ab6a9636f2e33cce3deef7e10561a70ebbd792fd3b2a671cb3614aea90. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:41:24Z), 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/JPW462439360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24e939bdb7666e951cf75afe9ba664309edc559babff4bc8d064f48361dfb72. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPW462439361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e480d5299476bdfe757b795d081764be084a3637d94391db36bfcc054aff0a2. 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/JPW462445432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59d0d5a9f84d279609d584295ec584468040d575f6bf65a43eae0cd187f3ee9. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPW462445433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b19f37f3e01904e84e3fe50870df5d1c8ba1ba45c043a70151148993f794b4b. 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/JPW462445434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b984ccc6119a75d0c946e1f2c3e86b01ab418e342fbbbaf5fc7ad9884bf3ef. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPW462445435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e5a3c053a41343d337a851bdba41f89e0106c4d9bea223cc6f0c9265983edc. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPW462445436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a404af2dadf98f85d4753642f64b7fe20fb715469e2f3e59c9a5984a836b46. 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/JPW462465694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25976d79f36f697215224b41fdf039f78a999baf24b227339bb2d3a171e69bb1. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/JPW462465695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2c5648d6935cb0a3a2b7589f766240d04538ff208a98f6c38096d054dd4f72. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPW462465696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57ad9c0df2e273884c3432cbd1e105e9457a6a0c201824ae20287b2e2bae1ef. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:39:13Z), 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/JPW462465697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfb91a7f371df39c61d4bf4acb61efbaf96f95718ef6284f01f6b210d4dabcb. 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/JPW462465698.