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 0xe6621d674b4aea300ffb4911462394c6faf175c1241f45446e14e717b3b573f3. 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/f3f004db-2d9d-49e7-ac3e-0843c10ddd66.json and https://artists.proofprofile.net/proofs/artist/f3f004db-2d9d-49e7-ac3e-0843c10ddd66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
All My Life feat. Mark Berry / Heisenber
I Saw The Face Of The Person (Spotify Exclusive Pre-Release Stream)
People On The Ground (Spotify Exclusive Pre-Release Stream)
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 0x66cde83fecc0b74092f2e688c546dc0540fa8132b72818f0c60b557297b31af7. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/GBCJY1500236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf55ecee91bbee1bfccc3c299849e91a36bed2f983ab95e9debaca8c5b7a617. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBCJY1500251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc738acf725335aa9338060d7ea39a6c8a98c486d39ca3f821baf8b2d386ccabd. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GBCJY1500248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bce80bf4976748735842eb266da21e8f385af964ef70cf5d4afd67ab305910. 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/GBCJY1700196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5c7f315675edd426785c74b9af956425e1ee2d0cf809ab1b501dbfeabc9d57. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/GBCJY1700209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e56b341d5043638e670460834e511b13b1c2bb3fdc54cc0da6a9d482090d081. 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/QZHN72198052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343ee06f610d707f865fe16186b05644d93910111e431898f6716644cd1a22a1. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:45:22Z), 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/QZMEN2126602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a591b93e95207b7ba4e13b16e8173c8747fbf81f9a868c988fb5e2ed95f69c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZK6K2134890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507b0925924b46598b407236436984679d05480ccfcbd22f5af11ab48a73962a. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/GB8KE2163146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa190ce48333db7bdbd6072444d0ab3a1e254d165d49d5b69c560bd757976a04c. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/GB8KE2424111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae0934e992d52300e76ba15db5d7401952868b8f4db63ed31b9df5470726faa. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GB8KE2427246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615de22080a249dbf0e48653611ab980357eb2dc8a6a35aae8006f2af05960a6. 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/GB8KE2508715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85406fba29adecf93760da1b5ee5348bbd63803835b57a6648cc65fdd05d2f05. 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/GBCJY2200162.