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 0x672cd2386d92fe4914476e208c80cdda588a6601c37f30215fb1920bec81d042. 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/5d7cb12e-b145-4edc-9481-c182115c3c8b.json and https://artists.proofprofile.net/proofs/artist/5d7cb12e-b145-4edc-9481-c182115c3c8b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Follow De Leader - Radio Edit Remix Collectif Métissé
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 0x5afda0124a0b2dc9e05eed655bc0801c069f2632e48377e10435620234528f47. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FR4FT0900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7716afd0331d7bb2f7a5493862bdbc1cd77ebd6e9c5f9753477f4a80f868d9f7. 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/FR4HD1100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c51547fb7250e02bf304ea30c9c93bbe9bcf99c135245ed033b8ee194347c63. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR4HD1100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa495cac80fb20067eac379b98a49e167f0c390060101f33ba27e5b10a792c9b5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR4HD1200501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5068cdf4d43c695ec3eefb88c83873407c2e9b3892f0cff038c02e31dcd7ec31. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:04:15Z), 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/FR4HD1200502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229158e014177b86234772ff4e3429129f38872284e9fefb0cdf59711ce91434. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR4HD2300401.