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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a238de206811730efc327403f8b67bbb226bbd1764ec3d8aa3570d2c274c5c6. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4819a48a-32f4-415f-ab56-0d7de1436be5.json and https://artists.proofprofile.net/proofs/artist/4819a48a-32f4-415f-ab56-0d7de1436be5.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62472a1f45294234ed00b5696cc33e67a712e86ae2671ef28b025dfe68dd42f. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:05:04Z), 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/USCGH1490915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20594dab124abd2e8485f384b8aeadcd82b01c27b1f4b85b1ac2ec732c6fa38a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:50:55Z), 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/USCGH1490916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6d7b27a30f3b3d2bff47d57b905cceb56b7bb76840bd805f4ad8d64abc3be7. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:35:58Z), 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/USX9P1363840.
I Just Can't Wait for Heaven (feat. Voice of Men)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae8f8744d24bb1e7744d3a8f4051607570ccecd9502394c64391e57ac567b38. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USX9P1371784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b32edcce1e4ea52a7d1c2072fd1478e19a2de2cac97ad3e5b790fc384cfd0a3. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/USHM21521520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1b9e2bce3d239e689c01746dd73ba60083d1f61973b3ab36844cc74091361f. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USL4Q2331929.