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 0x39c2bad801b31eed40783f0a0a355da354eb0bbd15c301fe2c6d38f7108e4034. 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/f1db90a2-4115-4808-9778-5010dfdea5b5.json and https://artists.proofprofile.net/proofs/artist/f1db90a2-4115-4808-9778-5010dfdea5b5.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 0x8a5ccf202f00c6ca9b035cd2c44a42e241f9f7e92466b0325a097b5691d3fefd. 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/DK4YA2305401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45d0af694ca2a27c74d3afaeee84352d36a855e2e7c8764655a6bc30da49f34. 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/NLZ542300552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e20a7717fddc98ab3ae12089fc718dd85fcd74b701f6c6ac59994d67254e9da. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/NL1DT2200127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce05c43be98dcfc573bf3628c163077371bcad4b1eea7ee2960252553623227. 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/BEIW12300759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377c2fddf54e90867a6294109a326c592df51d87633b7ba71bb24bae60bd29cc. 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/NLT2H2300918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81f312368d775d9fc4ed48cd5f6d33c3ec1bcc8c2f5df139253ae80a782ce9a. 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/NLM5S2302009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4ebd1650d01e11bfbf826c7ddb641808fed8d0b0c3fba21d11928df65162a4. 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/NLZ542300832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acc1ebc7f373fc1eb7ea0100186dfa0946f6fe309069923919e3950445d95cb. 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/GB2LD2310193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacbb94cc7ab0d1492c08ba45876dc30ab0524679c18828c6dfbb0437fd34542. 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/GBKQU2322800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd575e2b5ced9e3e96d887a1384b335f73633cda1b3f756c3c05a71ac935e998a. 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/NLQ8D2300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426bd50658a2d54d1f41a519a461a2935e65f0c1c164cb9d74b65d8d701aaa52. 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/NLT2H2301175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8585e9dd65992fe78eed32edf93e679874aa695d9956524a25eb1ae2e5edad9. 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/NLT2H2400398.
Revealed Recordings presents Miami Sampler 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3356fb7c30e2938beda0234a900b3548806d9159934662b7f7c4787fd9c51986. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NLZ542300553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9108b5cd0155dbe66a6c712794339238977ac50fd59af688f03cc5103a6f5b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2401196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cbe909b9e11bd2c6cef94ea5b554803ed5a5d8e8c377661975033b407638b2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2400886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9238263556231a5e11067228dedb79932cdb6a3d42435e6fb7698b9297fc11c. 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/DK4YA2400256.