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 0xd2e344a34725116eb39bae1215ef3ef61c3da8ae565f7aa57cdcb9db991bbc42. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78405d53-f3f6-4b60-be84-a7460116e6ec.json and https://artists.proofprofile.net/proofs/artist/78405d53-f3f6-4b60-be84-a7460116e6ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Medley Lagu Rohani: Priskila Group, Vol. 1
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 0xb59793d87bf488d02de97d971d732b83323fbfbd0327077e77d3e6a178915a82. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FR10S1497245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd7145401b7770416a77fd471b37a84288f89b2aea01bd7fa5e260505e2e7b9. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/FR10S1497247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9697cd72a1db856f1667206ebed34ab21715ea4109a7002415c4da1a55ff8fe7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:41:34Z), 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/FR10S1497249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcfa07d3d33f6533a2c61be0871b0ba5188d02bd9cc45d6d90b7ee2d1289fa6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:56:48Z), 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/FR10S1497250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800c8e0fdc113d1279d85d8596d85267778571bf709630a51a4add802f1c02f0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR10S1497254.
Medley Lagu Rohani: Priskila Group, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45aa022e9dfbb9ff3b019544cc74cd89897371c9f5483e8525a4cdcd3ef4ae03. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FR10S1497273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe552c0dc8154146aa138242f2d2bb458acea5850de3a5c284d8efe0087b3b72c. 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/FR10S1497274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1668336bc795ec30a86530d2737a3155b8273f42f41d2d851f1ff65b74924373. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/FR10S1497276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18d328e55aad8e45c8dde9fec3a94b71b8125248be0ec16203ed1c8e2d8f602. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FR10S1497277.