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 0xa23a4311547f30b2cfa818b21237883bf5b1ed764c7454826e1734c5d82625d0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/913f8cd1-d47e-47d6-87a9-1df44d937c7d.json and https://artists.proofprofile.net/proofs/artist/913f8cd1-d47e-47d6-87a9-1df44d937c7d.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 0x17eac854c0bf3a8451897399219ef111d6134b6ed28a4fcfc8eda07d6c10ef48. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:39:44Z), 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/KSA012232099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1c11bf3093c7b400036c76457c97eb81af2aa0c44bf4693d1262c9a6aa6cc7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KSA012232101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24024340a53ea3e348989c700a66e5e4e9fd9e7a89252b2627b0be189524191b. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:13:39Z), 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/KSA012232103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee607f82d119ea0794907b36506caa2187ab00edc73541ef4cb96a6f0d3b195c. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:11:19Z), 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/KSA012291945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45e6caef181d4306193cbb60f5e9344b32fc46e0ead9c37a6468dd5c60185e5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/KSA012312346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe826c6d20e86d0911bc25e18e8a73b37cb2f65f1668c7f025f13432ad0115f1b. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:34:36Z), 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/KSA012312349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87d951aafcb424cc345b42482c976f5984e5bfeee947adaf1800926eb938a2b. 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/KRMIM2465780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1c94c6c9cfe75a0e9b4023ba036b9fce9dae4cc38c4f6e45475069b552084c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/KRMIM2465782.