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 0x93652c60887d1977a81873acdfe9ba5c1b2f9bbdfc3a95c2360185c8caea961b. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/025c5658-1cab-40f9-89c6-ad772899b743.json and https://artists.proofprofile.net/proofs/artist/025c5658-1cab-40f9-89c6-ad772899b743.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 0xd77670747092c4ef5e25b6c78104a0534a62b35d07eef4e876c5025d0e16e649. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES92099771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17a32cc0ad30db1d3925a7c43ca309aa547f1ae46b213ed35c8b896c5648b12. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA2P2245014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9332cf6340944538200b1411098b6372164c12d5dbbeee673b49c950c7a05d00. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P2245015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f9bcddb1b3ba9461bfa3ceb3775e3d7baa78d5da1443c8a914b07301d47783. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA2P2245017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9fc582c03df22b839171f41549a474fed31ffb076435887f372fc38dc8ebec. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P2245012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ab71a2422b8391f4136666cb7cbe36589b93e3e47b4af6c6ee4f5344dcbe27. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA2P2239608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba7979526b410adb9f177b0552418b387fa5c57892c54e0d0f465720c818d34. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2228036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9d733a72caacc09590fc3f9839f09b565af249a8ea6ce10a91c366f55b7d32. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USA2P2245013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78abf59fcee58f7d6e6a5d93159f1a3beba0c4de028167352e2675cf9b6e5be8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USA2P2242894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8456a3f099f9b4d297c9d8a2fc3c7041c756b3e3dc02aec300df4a529bd1c8f9. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USA2P2245020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009dfea8542f6bcc6d64a8fcd3da4f858ee79fd02eb64f51a78eb0a3c3e159b7. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USA2P2245016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320d39b7268431db61a41a63870e21101dccffe599dc45814703627bd84307b9. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USA2P2245021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f01a51012baf4a0090e7e1f034b7927586b03d5b097751b8db6bd16f6999010. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USA2P2245011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d8a8d10db0fbebf9ee2465e57ff7d17766992cca8f0b61146b35be559502d2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2338195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30798eb3cc6a3ac2a5de2527b67fbe96ea8218b72ea5de259b7bbd8ff905c75. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USA2P2429209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6819d5216bfe7552aea5a6454b52bc6b6f9b2506f6e0173b426908cd96bfabb8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA2P2429216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58de526261420fcc48570117d30a7b9dc1a93d5b52439cd7b9f7d5663804e82. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA2P2429212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f79a898a3b95bf46be419f9793383e6cba9da31b3d6b08e7308f730ede8e16. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USA2P2429207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5ed56d4c71348b2a4710aa9f31828b311e7b0807d17f2184cec8d6bf357d50. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USA2P2429208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64f36abc4b774f4ff7dfba10c7eff843dbfca8bce446ad2e66dec886acd4194. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USA2P2429210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa53fe44b509e01fb7f531b2ec7062a748607767255a71ce27a102501d02f423. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USA2P2429211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffc649ca85c1a8cc992dfca180ef6a17f56d442e462b93af4c15c76f1a792b3. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/USA2P2429215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438dca8f7aaa0129a17a95b32a2b6e684eedabbaf6aa9a2d0d435fe08f1569cd. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USA2P2429214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bed69ce3d04a42d0a03c1488c4e939cc548024a1d509db4045caf6689d4fee. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USA2P2429213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072f81e5866fb06397659e8ce319383cfad8c5d4476aa4a114697ee6d51b14b1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USA2P2421668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9feb873a53d9eb0c81e4b9cfae8c17eab43ff972c08a0f04fb5df3a78b726c9c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USA2P2413309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9f490908e0947f72b2d059e9b2976bdca56550a121707025ca19fca96ca8c6. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USA2P2429217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d70557a19600f2bf7c0f84ece8e8aad99e735787a8c244efd27670770c8431. 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/USA2P2332153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d70557a19600f2bf7c0f84ece8e8aad99e735787a8c244efd27670770c8431. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P2332153.