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 0xed1068655b4a49275b38d5747e637f39552d610786fae312250a45e9aac805a8. 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/fa8eefaa-e2b9-4b84-ab3a-6c71c3de77ff.json and https://artists.proofprofile.net/proofs/artist/fa8eefaa-e2b9-4b84-ab3a-6c71c3de77ff.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 0x723a001366d120fa38f591ab0f3e7125306b9ad45117ba04c11fb370eb3cef7a. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:09:13Z), 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/DEAR41928587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca11af19dc3581e14625b49162789714f6e0694530196603185bff1c6db206fe. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEAR41968844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723a001366d120fa38f591ab0f3e7125306b9ad45117ba04c11fb370eb3cef7a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEAR41928587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3216b4aa1c770446836a161ca9f980a065bb60711bae1f05ebdeced900235f8f. 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/DECM10909707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeeb306ff765fcbfdd9efdb22bcb4ffea308a7103af3380b5593a172d278c263. 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/DECM10909712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371dfbcf6866ead0c2402d7c87cbb8d69cfa7227710091c41150c531f9e22754. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DECM10909702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fbc3fa993bde1c7a8535acc623fd741a3618a7bc3dbc1c0c5760a1ea78a2f9. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T04:58:05Z), 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/DECM10909705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417c088bd8ba5f2ba6d2d891cd9b6202d51f312bab647cc9f418ea4719e4382d. Chain 2 (Bitcoin): anchored in block 957566 (2026-07-11T12:26:02Z), 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/DEP890714720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e74a3f594140d5eb262f264f092b996fef6791ccca302e8c514f910066237a8. 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/DEAR41974530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b07fab964daddf2c759826e2abd400c9f5b41aea1c6b30ec20a130d15dabd34. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SE6XW2145446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421fb18b092ca1fcd46ffd49e5b22623c18dff0bdae514c8d26fd18eeed89812. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:02:55Z), 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/SE6XW2146237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ad6968dde52f6d9256dcfae9197110022b3f0660a3cd823a2e0b762887cdf5. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/SE62M2152546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053b87b8f94e418b814f7c6be3cd9cbbb8ab91531ba2151caf9afad30a457964. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/SE6I32436051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cb391f02fa89217d62ac349a30fb1095dd5a2a5ba99a49139d8605c13532e2. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:27Z), 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/SE5BU2596218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053b87b8f94e418b814f7c6be3cd9cbbb8ab91531ba2151caf9afad30a457964. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/SE6I32436051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417c088bd8ba5f2ba6d2d891cd9b6202d51f312bab647cc9f418ea4719e4382d. 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/DEP890714720.