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 0xeb7d9425ba2f3caf17d37c6dafdeda566c3ea303180da9e5a9f3fec24cd6fce8. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9245d0e1-9d5b-4216-b7ca-a29fdaf887db.json and https://artists.proofprofile.net/proofs/artist/9245d0e1-9d5b-4216-b7ca-a29fdaf887db.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 0xb9f6b280a95bd71266011beed9ec68b73df40e9eaca38c676cfce10caa0e6151. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/JPCO01625660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c0dd5834e0cef3f2a90a9f212bb2af0a194e14453f0740b7fd916e8cdf1dfb. 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/JPCO01709360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa764b456ad88fcf0e3c028b203328a0666700d3d22ca446f8b44d3a1690ad785. 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/JPCO01709370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed814f0cbad10755c150de84ab35bf578207f8d29aaef7bfc891252a6886ebfb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPCO01709400.
花束と磁力 / 美しい歌はいつも悲しい / 間違いだらけの神様
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04a2beee6f7bd564fbcd4957cc66adb7522c31775fcc3dd2b056379c33f1b84. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPCO01824200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce3a8c4525d320b6ce8a008ce845ea9ae512cac4fe9ca6e4c8ee3845eecedd5. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:31:19Z), 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/JPCO01824250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068d24607a9af278dcecd2349cfae6ed641951839caa726731a2cd59b6c4b4d8. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/JPCO02218020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068d24607a9af278dcecd2349cfae6ed641951839caa726731a2cd59b6c4b4d8. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:16:38Z), 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/JPCO02218020.