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 0x5befb08a12783c0c269861231641d998039087cb665c735150c8ad825307249f. 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/a788a65e-f458-4121-84b5-626b8fe19012.json and https://artists.proofprofile.net/proofs/artist/a788a65e-f458-4121-84b5-626b8fe19012.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 0xea020fb74d283beb0c49b959ab1c9bbcb647c719e152af86921c7879963ee8c8. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/CA5KR2046797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052694db5add789d35912f7d6a3a12e0f4dc7cdb427e8be88fefb6b92f4e89d7. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/CA5KR2047093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8341e857172de7a246f25b4fffd7e8250f356e72328123b2470188f22c38c6. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/CA5KR2075930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da2f50b44025dee8e812c21c8cecd742ae849aa5ad7d6e2ecf8a8f4c02da84d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/CA5KR2075935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc91b93946c5fce5d6f5b9baefd86288baeb21cce0b3c5f50c06ca8e98dea3b. 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/CA5KR2075937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44b46a80aa0fb6d06d4485f570c37c27b336650c7c419fad179c7a68f963ece. 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/CA5KR2089012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e017ecb66324f0db1df3f94d6b06a8d85b7722059d016fb043b5c33d62fe4a. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/CA5KR2089013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaaa2023191c5084e3de29897545622150032e7858765cda05f28270389b9082. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/CA5KR2075929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bd2d57dad30143220869554d4f35eec49c5e39488c3827a5284d71ecaeece7. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/CA5KR0010793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e6e277fff9bff6ba3c9a5857ebadaffc6c6362e5cf35b252f8ebb1d0fcf9f7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CA5KR2224908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32d3cae823240666082a967241de0bb3caf251c0df142a9e437640df11ef019. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/CA5KR2224912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7cc94f50b0142a4b0e1e266f73c44973e4cf572da73cb9b08333f1de4dde7f. 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/CA5KR2297567.
The Beginning of Love - Alternative Mixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb90af34f89ba2dba0120316efe4bccebda96afc50a96e3d4e954ef67a7e6a6. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/CA5KR2421993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0133ecbcd3e80a5a419ac388edb215ed890f63ce0cd58c67cb21bf339c6e6852. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/CA5KR2441833.
Transparent (Reepr & Ninjury Vocal Remixes)