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 0xbf79bc5b3750660c05e7cd2f61ef3c02d4ffeafcf3b0dfd12a067e902e69ca40. 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/427b3c59-b3e4-4cfe-9071-3fcc97d29d7c.json and https://artists.proofprofile.net/proofs/artist/427b3c59-b3e4-4cfe-9071-3fcc97d29d7c.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 0x2e914582976af7618ccd7b396b12ba569af4e288ec387cabf9f25eb52d577845. 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/TCJPH1873597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc329acbc0e0ae60ba9efc10432eb76ef5523d63e3afb9ad91654cde3fa3b8e7. 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/JPV501300955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3310e531ea9927218e149e6a9238c2da13d3b3136c059cec7c31f4d57e9e4ff1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPV501400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64a6d2266b8b8d693130296d246cfa4238d48e58694ca952bdf6f2b38984427. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:36:27Z), 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/JPV501400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec3ef025378c86ae3f13e1cda621888c357240ccea661e883e40c2c6c968caf. 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/JPV501500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd623af1d083b2e0b0f45d7172f4c44bf3b0a9b1f98b84024f46d0c7cc66f4a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPV501500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f01a8b01f3f3808140fa3848c4544635a462b2b833215c2bfa48240b9b3cde. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/JPV501500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa53c7cde467b29e2fa93d01fbe5234f387bf5a46ff801399d5c8e988d3f0c29. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCJPE1673111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4b44d8cae1febb2fe19faf9131871c67bb8a9019850ac714c2e09aa62fa09f. 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/TCJPE1673113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f01a5ff6a5ecd877ff078623147c7a89c8c90cda93ba6628d02bfd0244c9469. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCJPF1762785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe265da691a780b431c9664f9774e703324f1db6ae9502237369d61b9f1f823a1. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCJPF1762789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930626b7c4ec56a5c06fe215f678476913fa41c63ee732aa342099dd35e55289. 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/TCJPF1762774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5738ec0e9296f5e5f74520a8595388fc920ad279204d0e74d1fdc7146a521369. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCJPF1762799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84323296c79d9589fe458520affd564f691686ac5174f4580af2e1631caf13c8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:51:09Z), 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/QM6P41831450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcd7794dc5cf0ff0721a036a24fd8e1dd66568fcc0250bf22c7f6ce135828ec. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QM6P41831452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde0c3771bd42bae9891bcaa2a5c69e1fc2336aee2462589191a8786fc7634d9. 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/QM6P41831453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35094646afaec9f60cdda4bb3e6b3a9cbb17125c56c17a6c2301d3c7de59325e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM6P41831454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84323296c79d9589fe458520affd564f691686ac5174f4580af2e1631caf13c8. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QM6P41831450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b76a18676fe69dde9eff80691657c2aa968bb2e10314ce5640f8363dfb9f87e. 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/TCJPJ1991306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b76a18676fe69dde9eff80691657c2aa968bb2e10314ce5640f8363dfb9f87e. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCJPJ1991306.