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 0xaf1c858af8b6c75aafcb2067d4a30995a33a38d86cfe7ea03a867677827b960a. Chain 2 (Bitcoin): anchored in block 954004 (2026-06-16T21:01:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32a9854c-f555-4a95-a14c-5fb2821debf9.json and https://artists.proofprofile.net/proofs/artist/32a9854c-f555-4a95-a14c-5fb2821debf9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jour d'Indépendance / Bataille de Vertières
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 0xa52454486ac256ceaa55392a1ee02ee1d1ca0f2fc874f129f9b218377689284b. 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/CA0VW2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd784727e681cd67618e0d539530e4772ddac940c6df86599b884eaac670d4300. 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/CA0VW2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd148e56637a73d8515ddf0c288fafb4faa69581ffc8736a1ae503ab29d2fb8ef. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/CA0VW2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef90cd7c112f038b19635c6bcb7c4c4ed2280f5a29b9bd22932e40f4e0140e36. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CA0VW2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df0ae647ec32a6f248cdc293a8adafa0864bb6fac6ddc021f8183daaf1fbc94. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CA0VW2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474628b74b09abb7a77f6e6eec1b27b16243964d7144831ab4a8fc950beefa8e. 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/CA0VW2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998446095008cef191560395ac0023358d783ff4f82eab76d77977c3184f51e1. 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/CA0VW2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf116b3e277ec0ee545d50ee06a25438717bd0701041813e0a157440fb1255af8. 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/CA0VW2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251626fde6001684ac811118edb15b5af562cfa37c2d122344999be41821407e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CA0VW2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c372b9e1a009faee75c9e2997622b30e4f41efa83152d685da5f7ac17c10094. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/CA0VW2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e62d0ce45bd8ca21eb8ebbcb18a662455cf7d22666151ef76aeedc5d2da4053. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CA0VW2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a990d24d2d17c2dad5c5a2383edd48f131ab4947b8154f1ed2be081f359356d. 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/CA0VW2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f20861adde730ffc38ee00d3cb2e153c0a56e7af51d3549bbb42f71f99de1c. 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/CA0VW2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3e7798b036894148c356c3bf2b29e274d7b8c3c6e42cce166521b451441311. 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/CA0VW2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f90dbf9df45295db456af5b830f5101a330177818ddd1b0f9dac8c6361bb41b. 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/CA0VW2500015.