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 0x05f7b1f20c47e384fd7443cab5d125663149a52bb20dd690b37229ad29cea4ae. 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/cc8fe41f-a0bc-470b-921d-9a12e34ddda5.json and https://artists.proofprofile.net/proofs/artist/cc8fe41f-a0bc-470b-921d-9a12e34ddda5.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 0x6aa589b09bde2ee973e7b55ca1fc7c48daa028a439b00a30d145ad9f049cfae8. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/JPT671400620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bbb20673d605ecd9836efe59d922b91181cb05d324fd0b479256ecded41701. 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/JPT671400640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711c04e2a4f9f61d9fb29bb3ef733b8b5368d622d339ce0ff5df70d083c5207f. 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/JPT671400641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61244d2a5e2c54cd56f529765ec3a1d167ef1de672d7cf9d393d39d2cfdef597. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:47:22Z), 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/JPT671400643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02141978b09a1223d88ac9586da4382add0e27471af3db4991abfc0b00ddc4e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:17:12Z), 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/JPT671400646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746047271577b11eef820582c1b6ed210370cdb054ea9fac32a71867818fc9e2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPT671400648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bbb20673d605ecd9836efe59d922b91181cb05d324fd0b479256ecded41701. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPT671400640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8580b41d2060b66f66195aa4197158472a5734fcb5b56d210da2c6d63b26fa1d. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QMDA62263579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c4b4a921d7874fdced0178fac12432a3f0ae4e63489b09a532d04a03e99cca. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPR292300164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd922242ad1be8ea0e0b1fce11691a6680feeee0e046caf2f28b9f6426cbfc18. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/JPR292400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f66c4e6d53af4abce68cbc6d39fabc036f134ed9d52cc5cc017ba1aa4d55595. 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/JPR292300087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b00b5b105b546c1d45e6125f706cc6499500aa837635a3327e597798a4b324. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/JPR292400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8158b52302c853741fb4488432d71480b72db3f831d8b1d0c5a80ed0b0722ed. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/JPR292400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1a0ae70012191cd14792647d0b88c447c2827d8e8bbf0a6999dd201311f444. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:31:03Z), 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/JPR292400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c73ed4a3d59eabdf659dbb214283d3304ca0f4c4b22d3a19e8323cb5730275f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/JPR292300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56abd7ff2c9cdb8909c370a27a7ec3cf8c0f3070969a2ec07505fe4a7131006e. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:21:57Z), 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/JPR292400313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5f2654ac3b48f0b02d72639c9ab746c450dcad3b0a621142c97863c43e2f71. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:19:12Z), 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/JPR292400314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0798b82894475a6ee71847335e016ccf043b8eb3e643ab6e5c5bdd45d35d3992. 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/JPR292500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a44c9d953acb302e7153064958e79ad7de0bf930212bdc37204d3b068b8e6b. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/JPR292500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d1d650fb5a95ffc8a7e34c66bbc45f50cbb4938647ca9cddac4a73acfeb7e5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:51:37Z), 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/JPR292500003.