thumb|Baby in Vain performing in 2017. Baby in Vain is an all-girl rock trio from Denmark consisting of Lola Hammerich, Benedicte Pierleoni and Andrea Thuesen. The band was formed in 2010 and their mu
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 0x5828ed8d10c51b0f0907c25da8bf1429bd180293d0eb8be9fdf9251c4d32f500. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9bfb950-3313-4a23-a123-d6355f49750a.json and https://artists.proofprofile.net/proofs/artist/b9bfb950-3313-4a23-a123-d6355f49750a.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 0xc3dac307db69786b2a258973d01e553fda9ca681e70c7fd996bbadffc67f9308. 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/FRX282087372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7f3fdb16f0681af46b61b3c2d867d3057a7cc94c7717a8758535dc2bd89cb5. 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/FRX282087375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c503adc447a5240fdd30328b884a9616109f638b3de234fa9795901729cbfed. 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/DGA092360407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21f73156c52d0ff10cc65085e72a4268692a330ba7189d668aaad06f5ba3055. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/DGA092360408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb216d043d57a097d73bc52e3afe0b7941ff07e8f51756a25493b4eb1abd50606. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:19:56Z), 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/DGA092360409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d0b1d0f9a359a82822594b7af2df73c9a0ce9ffe4f36daab5761c55aa0ff47. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:26:01Z), 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/DGA092360412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3025599d558c89edae4da461c7b8a4fa42be0487759d3b4cf83dc739151ee434. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DGA092360414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71098a2d885e219c0dff2af3f46944c299cea760701f3c9ecee508c9dfe69a5a. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DGA092360416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d6daab753f350955514157a2ca9800a67c2d609f1214bfac0ad5c91ea29ae2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA0P2438185.