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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf24ff4ce393da8b1409dbd020a727b45bad21d2aed7f725f5bd41f5830cc9d. 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/30826459-3944-4678-9757-68e96359dcbe.json and https://artists.proofprofile.net/proofs/artist/30826459-3944-4678-9757-68e96359dcbe.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2f876bce7908f2055753c9054c4135946d0d5cb720c32989b00d9bb93171f4. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/GBBLY8500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879757120baafd7d2868277864233157859025fe0876302c147cebdbf0145eda. 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/GBBLY8500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bf72f1303bcd696248b88226d4ad7ec9756ef8cb2e9931b05825cff4daf5fb. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GBBLY8500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653a81f50a52a317c82dba35f78ef5f6bf0a8c79cf93940aa8099f11bfb0ef31. 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/GBBLY8500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fa422227101f94b5512eed9e42155f823c77ce0adff46b18a9009a94a5f0b2. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/GBBLY8500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cca5cbb54f79c4166ec4982a025f696182f7ed07edba6589b82574075c891e2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBBLY8700108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae22ba0d5579b0e297e833929f01f4577d2ce1a2b6ea372a825cf7199a8110e. 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/GBBLY8700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf783ab18420d5d637235df9fd7b7d898a8c396e5a440326cac420d3325747403. 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/GBBLY8700111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087b0c47bb4d140e119dfb0308479da1ddec11db0810951c7c978049cee36867. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBBLY8700114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886e0d4bb428e53ecacd3983cad0d35ddca6b1609745b18dcbdfa07528efe0dd. 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/GBBLY8700115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27995859a4abff4afd49e879b85508a9241cfa50628fc414d8a1adc786e9c7f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBBLY8800074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe318bb996f484e8d163ef9e0ec43438f02548607b8a9848e77ac4009cbbb98fa. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBBLY9100151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602edc9995568bcfeeb656a40b5228606e0416b2bdeaf2e99b1080cb00667d07. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/NLA249500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb56b9b02860398b212032da410f01b5805aecd63987c6459ebbd86311018a6. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QM7281486373.
A Mirage - Disc Two: a Monument of Trust (1987)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a81e5b2df329f462bf9ec3624c8f0f1ccae3a352667f036bd4bd1a4a93173a. 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/GBBLY8700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a81e5b2df329f462bf9ec3624c8f0f1ccae3a352667f036bd4bd1a4a93173a. 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/GBBLY8700020.