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 0x70b6a1fe18fa6de6e700ca398ac2ffa8404f4aa19cc4e50a344cda79b3c76aad. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8f0d324-d7d0-460d-a528-6a93f00f33e3.json and https://artists.proofprofile.net/proofs/artist/a8f0d324-d7d0-460d-a528-6a93f00f33e3.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 0xd4f89b88ef89ba1d83f89ebddb665940e35814e338959310169cce036f95da18. 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/NZAM01901919.
STEREOTYPES OF A POLYNESIAN MISUNDERSTOOD
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fe75f83d8fbbfcc14b403282f29b4ab043c9b6a5b7111c4e456a3d07e49d17. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:22:11Z), 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/NZPB12303462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9c445aacc48bea87efd0a51f1aa806d662b218af79fbfedc1ce5b8856d4b1e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM6MZ2560168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e60e00dd687d21e154c719f626cc156b01e5d3de6c1231ced095158c29433c. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QM6MZ2560601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9c445aacc48bea87efd0a51f1aa806d662b218af79fbfedc1ce5b8856d4b1e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM6MZ2560168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20697884a0a014924be1272dbbd3001d7583307a06475800dbfdb871e9ef7841. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:28:53Z), 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/QM6MZ2569631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78649af4b8402c2793030727d5d146308213469b148204e0d47ad78c57968fa. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QM6MZ2569637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc484fc9957ec35040e6a7571299f7ea9a3a6e95e8935977a15437e1d94938df9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:32:56Z), 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/QM6MZ2569639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401b555672c09674ec9efa770a02b718d5b8d121dec548c791e26f39dab0bce6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NZAM02223806.