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 0xeebed9d806ddbfcd986e2131febfdf64da1e1ad9b5e7fc774f3f97726034ff3d. 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/ccc0a6ea-ff56-4b35-8e34-91776325dc26.json and https://artists.proofprofile.net/proofs/artist/ccc0a6ea-ff56-4b35-8e34-91776325dc26.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 0xfaa2dbf535daff28ea3b37a6d684e6138c9da7dbf437486bd375b72edd5015e1. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QM6P42010274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc706e34460c54b85a0d9bc51d75305b96310f362306261435854ac22d4bf0f58. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:06:57Z), 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/TRA162100300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5eca680953a25f4c42ad4a0fe6f4ee20c48f9d3971832eb1f0344d8dd0e430. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBMJG2212069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3bdfcddc38aa026baa7240aef8fa2c3d2517bec0c95832e55a6e9b50dbcb0a. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:33:43Z), 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/GBMJG2215759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831712e3e70171e7cd66e88a2b2edac74dbc1bd39b2adbbb8a9ac1e38bac814f. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/GBMJG2217624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3987231d44a0bbb209aa00e957bcd40cf975a0e68456be6eb95c9adccf285340. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBMJG2219247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448ba593a7e1fa28d2358c3d0be25fb6630cd21a8a29eb42bdd4d0cd6724157d. 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/DGA072305145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8fc098ef3fc3c6d2ec123e46a722b151dcfc573731b72d393e811214b6e1c9. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T16:00:06Z), 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/FR59R2491653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01203055d2fd4f5b5e31287dcd220ce5467c3818b557688d2af5c5cbe5a47eef. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZW9L2469976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e9f2778adf7572ce10bdf8c637f3417e92796405599dc4faccd6a8e62e676f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNJV2551911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2574cc7de2f5ddfc217aa1c2bb75b57dd28c64c3e5c9a975687e2880432fdaea. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TRUM72000045.