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 0xf656acfa499f853b4cddc53d31d59eb2ae80cd48c705f34b58f24e047558ee76. 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/cc7c930b-2096-4e2e-95b6-855a0508e42e.json and https://artists.proofprofile.net/proofs/artist/cc7c930b-2096-4e2e-95b6-855a0508e42e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Feelings melt into the night (feat. Nqsi)
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 0x1ebf316816eddd1d925cfe8adfb0874f4eff5107055de53740334701fc2331f9. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCJPZ2493162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebf316816eddd1d925cfe8adfb0874f4eff5107055de53740334701fc2331f9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCJPZ2493162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef37a34b2024cd3be3713957a9fc67ad6538f8db35baa3a45a838581e376df9f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCJPB2439352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d530339b65f084209bc8577c153880b388ac19cb9b961d7f1ac3a357c27095. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:07:47Z), 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/TCJPZ2489338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abe1c33eb7d466fa2b92b18fea0dda47a41bff3cd4c4bc18fb4daa357ce3849. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCJPX2347694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cd1ee77ce83fe9d734729c7c5c374f33d236c300ed8ce4dcf1d0a908befe5b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPH2506392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef37a34b2024cd3be3713957a9fc67ad6538f8db35baa3a45a838581e376df9f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T09:13:03Z), 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/TCJPB2439352.
ポッピングナイトトリップ (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cd1ee77ce83fe9d734729c7c5c374f33d236c300ed8ce4dcf1d0a908befe5b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPH2506392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f33a7c936992b599f838cf9f69a5c08c02ab6a8c373f351d8c1577a6e181e0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPU2221877.