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 0xa472d00c65ec603bf6b607399e1685defdf54b0b6b40636012faabafb257de63. 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/d98a9bed-ed50-4d31-94f5-f90829bfb810.json and https://artists.proofprofile.net/proofs/artist/d98a9bed-ed50-4d31-94f5-f90829bfb810.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 0xbe705ef5506be177ec7e50546fda64d59a4b0c2216a1346ff8fdad6df1a4722c. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/DEQ022000968.
East Crompton (Where I'm From) [Village Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52be7415b44b27c63c6328d2d80e8ca50e76b4f633843a7f723c354d8812ad00. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/US3DF2418309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc89679a9680ceebc59d8dee5609f5d77704e7287ce3be658a5cc6a36c7a6e24. 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/DGA082475455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478a211a15fd489f3d3c763f270b3636e8dd75583dbfc13438691595baf62d02. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USANG2417381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a08cd8c23ebb245147324983bb019d134b84c3953a45ff6259c80d3c75212c. 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/DGA082475451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4e1ae9adf8530cdb0095f4cbe2cc14acdacec17f2dc5e3cc888fc9eb7a796c. 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/DGA082475452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410b731ed1e94defd8af734bc1122c38428e64bf3352e5222cb51ab614581dce. 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/DGA082475453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e9d4d1072244f31eb2f07f4e8b2ac7526fddd6077a67b8e4ebf9c32c4374f0. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DGA082475454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc89679a9680ceebc59d8dee5609f5d77704e7287ce3be658a5cc6a36c7a6e24. 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/DGA082475455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87ed61abde6dc5fadd55ad645433c08a240228c8c4da4e9e34d89550b084d1e. 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/DGA082475456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6346bf497334abce1902631bc0ee863106960c3cccad8cd92502fb1bf94179f. 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/DGA082475457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f5846f2bbff4743b79b40ccada3e7c4ecf1100b0dc23a3709d1629e88eddf4. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/UKHF72300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650b9a094b39701fab2c5a280189e59a7d9394b171425e330299273209e69578. 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/DEQ022118597.
Auditive Release - Physical Compilation No. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9c45ff41d3bceb8c90d98adf16ae41447af070ea6e3e12c871921f70cec315. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEQ021803416.