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 0x866c28aac1f285cf583d211f13bd7c732f75e02809cd62913a7b186dc97dfcad. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22792376-022b-4140-8f84-78001af85621.json and https://artists.proofprofile.net/proofs/artist/22792376-022b-4140-8f84-78001af85621.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 0x6d3cbd7b997a0fb067382e63c329727fabed0e0b951ec49a2982aba9efe2ee06. 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/EEJF11200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b59ef47403fd6d7050b0ee33e8873a5af9da6c544b9d95ccf06174995bc4eb. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/EEJF11200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9b93030516a365c9eb61675e30ba162ed19e628691c40424b8f14aff89bbde. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/EEJF11200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eda735648d459ef37820b9fdf2f963f45b72d179ef3328a5c552c57fdf1125b. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/EEJF11200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281e298900e9694b207f04da5e257156ee96a67ee087999bbe3325a55822c2f2. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/EEJF11200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ead604aede47e4330864204b8f4443e31d8f84fd0a17f40583aed025769cc8. 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/EEJF11200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37e62330777b82aad095dba714bb211e9045a10f0d32a1e38d23ba6bef6c463. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/EEJF11200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ce7c358f53ce3b66a6a3c2ba21dfe33769351f6b37ded481fda6642e7d71e9. 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/EEJF11200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575026a54d7f770edcc0271a273b8a7680f5e0bba095a817ae2fe6f98f55afd4. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/EEJF11200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e2311a5709ea0a33bf9bc134a7a16dbba6877b35cb08798647dce3050f9d79. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:00:46Z), 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/EEJF11200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381dc11c1f5341f310bc91c39503b26a75dad5977e21a6ce63af44462148a816. 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/EEJF11200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2e5478ec24b63da017f42150111e5f279e9bc687a3cb4a19cac33629a461d6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/EEJF11200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea42de9c857070bc9aade6bc5852d54047e6f76e650ff46d0baf996bd48f4ba3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:04:06Z), 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/EEJF11200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191e12808a6b46dc4bf21d4d8ff21dde425d6be93dd72b374cca8b00bcf12daf. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/EEJF11200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a9c9cc44a62d40db4e7b9bb974763e927bbec66d3b55378ea7e790d4cd351d. 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/EEJF11200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb55324e2b0f1c318f9978cda71412cb110f8215e9742e5499aa7743b88c016b. 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/EEJF11200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0ab7a0c60ac6e34985152a06e2d0fa857512bd0e304b872fa901c715c3bf68. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/EEJF11200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b8c1be492a088acaec373f0455e92a8170aae703658159d4e00ca06018ab1c. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:51:49Z), 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/EEJF11200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d906c59ef0f0369391b33466e7de6645cff7cd6f373ca4eaa6f17ce0426e16. 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/EEJF11200046.