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 0x5d94ddfd9d1bb4be4ebf013910e3da4f5fcf8b2d1b1d51232253704c76f7b26a. 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/8abac945-99d2-49c4-91eb-49089fda420c.json and https://artists.proofprofile.net/proofs/artist/8abac945-99d2-49c4-91eb-49089fda420c.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 0x815dcfd2a32edcb20eb83488d84e94376af8f9a5ca84698c41fea568784fa41e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM19922858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f647ccc5c4448d0653839d352286251e362697f282a45815c59565238553cc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM19803304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cc8baad516a4f27645dc2999a5e8a477802792cc849e3ece23487ee8350d62. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM17800445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f647ccc5c4448d0653839d352286251e362697f282a45815c59565238553cc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USSM19803304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f647ccc5c4448d0653839d352286251e362697f282a45815c59565238553cc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USSM19803304.
State of Shock - 12" Version - Dance Mix
Club Epic - A Collection Of Classic Dance Mixes - Volume 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419f239e9666d9f5a21cf377a170914389d900d33a98f5416e76eceaf1c84b97. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USSM18400056.
Shake Your Body (Down to the Ground) - 7" Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3548f04470ca6b170d4d75d62b75f77ea50d214f904f750fe38cc84b594a27. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USSM17800842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7bcf1ed1c3221cfa5197585859f0c79489f90d4405484e561ac1049b012cbf. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/USSM18000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f647ccc5c4448d0653839d352286251e362697f282a45815c59565238553cc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USSM19803304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76db8f093e92f4301d0610bccf0da9479f95f123ea3acd5a4ed80e091341cd3. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USSM19915101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d3690555be516d6a48500ed02959a5a668ce2a2b3c969fa67ce613e8282f2e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM17801252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249277bdd5bcb6bf243d88ca76fc4b22a89134b84f6dc33cd34d0c152744e330. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USSM19915106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7bcf1ed1c3221cfa5197585859f0c79489f90d4405484e561ac1049b012cbf. 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/USSM18000014.
DISCO - 100 Hit's - Dance floor fillers from the 70s and 80s inc. The Jacksons, Boney M & Earth Wind & Fire
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3548f04470ca6b170d4d75d62b75f77ea50d214f904f750fe38cc84b594a27. 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/USSM17800842.