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 0x7ca2dfc56a684a6cc1c4f6f0f7df77f7b0c46d212d636fe9fd744cf3700e177d. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f43b734-cc49-4a63-9b7a-c21fe0478091.json and https://artists.proofprofile.net/proofs/artist/6f43b734-cc49-4a63-9b7a-c21fe0478091.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 0x75e01605ec18b44ef669fcb9c4d7c1a8306434769782fae9fc1c9054e176979c. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZL382067459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f43c07960076572ed64de8ed38550940f3eb13ac4ad3bf32def02548b769c83. 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/QZNMU2066162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a49112c1308fdd98bb5e74a15cd4ac5dfe253918cebad2105eafdd85329e0f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZJG52233001.
Punish It (with Kenzo Balla & Zazu Babii)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2eb22d4c94b4fb74c8e08465f96605416b67a0c9585ce224c2e6ce6eb5204d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USUM72222168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe833f2d4bb537892f3293409cfee53cba8eda2550ff4e719ca339b4548b38960. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USA2P2328460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc89df5bdc4462019e2df25a8b2cd5b4d0bf71ebebf4f91cd2edf803f5df92a4. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZMEV2062027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3735032170cf27d1606029132056de242241a7cc0f3fb7a7a6d9457e4dabc1. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:25:41Z), 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/QZL382583829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a7cfea92b504d1f597cbf33cbb519d5d542a76f1124773486ffa6280920da1. 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/QZNMW2518421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf641643cd29b2a28b9fd73449bb551db086c29551764ef4f84215cc24ff74b7f. 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/QZNMW2518432.