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 0x458926e967c2eea0e9cf630bbc21e9a4f5c714dc50f47b62e577ec3929020c55. 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/1560430c-9e51-4f97-9659-b6a0bf8d9ea2.json and https://artists.proofprofile.net/proofs/artist/1560430c-9e51-4f97-9659-b6a0bf8d9ea2.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 0xc6191221f125468951f7f646e05e9ca44df075ec8fcfb25c06d1c441877b9d1d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:28:18Z), 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/DEAF41800447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85e25bc638536e30f126848346d1d40695dd434ebc870ee752a699a2530696e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEAF41800448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01379fcc15854344333cab888673f439f1110cf519673c0d3ea1319ff010a11d. 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/DEAF41800449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72cc8a0f607e16cbcfa4a4064a5f08084dd8d610403ec44b52259c304096050. 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/DEAF41800452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6c39b6683fad3e9d209181f92be63259aa353c47172d704045b143d809201b. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/DEXG71800080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32f3b6ee1799b98617031c0d9bee81fb3717c93579ff11b12a5eec8e51d66dc. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/DEXG71800081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d708c02a2c85841d202d4e5b1f70fdcbd659229ec1aabcc6a0b259fecbf9f74. 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/DEXG71800082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d3d64d1bf052fd19631b48055a3be13f6720012aef1126c8e6cff4a3b88a0f. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/DEXG71800083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0612667bf1307ea955467d7d2e7bee0a7e27b8d9f098ef90c90d660954fb6072. 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/DEXG71800085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ef07f7992580f888b92d9baebd578bceda8a330fe626cf27db86520cf00c98. 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/DEXG71800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35f4a1eb5f7a4ea3e7e7189296a4cef6af42bcc54899bdbf26bf67acce61a20. 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/DEXG71800087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ca5bca6fac37810c8041c3ae7b9be718de1d64d9fa5b845f447ef820ba6761. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/DEXG71800089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334fedb55917d7f8052784094977f92e0ddec6a7e59f3ab5e6dc38b2c0f0c296. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/CH7812354930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b621aced75514449eaf424730ad553e319bc1f4edd703fbd1f4f021f26a3e5f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:27:22Z), 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/CH7812363702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fd9ef98ac96201b3f8bd7dd59c726599d3ea09ac2c56c303db8f2339214a30. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/CH7812363703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9562e87538d5a2471948b6e727367cf12a9283ab88de6bedf92956cfd85836b0. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:36:15Z), 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/CH7812363704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058a4ab7b293eadd7e46b2d15ce85de00138563da53c4a0f63186ac34be705f5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/CH7812363705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cac1dd32802c50e89e2bc4131d399ebeecd87a132d9a69cc86bfdeee96cbef8. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/CH7812363706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cb2fe660b17578184081258caa6ca0468b6e2bcdf0447ac6820c070425d76f. 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/CH7812363707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0a485c88cffe0c727419dd104e4b0d7535d29eb32d5d54bddeaf183c6b0725. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/CH7812363708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91dc11aa7723cdaa9294dc0bec7f402a8667267f2033cfd162773c67dcad53f. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/CH7812363709.