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 0xf9961827981ec5a3acbc412865004cbb99be8ebbd98ed1b51823dfcb505404bd. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/126315fa-004c-477e-955e-16878a6d681f.json and https://artists.proofprofile.net/proofs/artist/126315fa-004c-477e-955e-16878a6d681f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wahancanka - Lakota Pipe and Ceremonial Songs
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 0x11dfc587a871c874a61a52c2153fc19eab5541dd1d60e26eea7cc009d88276d1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/US8640528503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc357217d5dc12b9608e230e7ee274693c655d4335676a934110061cb80d5326a. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/US8640528505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322159fddb67ce2e9c3f0d922d723f9d7ab53eb9a1ec473706c6fd23f0563cfd. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/US8640528507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebe675fc4be751f12c28f41188d155e42db57ce403bb370abeca9c7718a38ae. 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/US8640528509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f9734d6a3566b53bf88f077847b381b4d6f5a6c857b2df8fdb6c906deff6a7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US8640528512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a283c1f35a8fd3a1e81086a319c1ec4e03cb33219154901be6745fd0a5906b4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US8640528514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a1883a39f934a82087a03b8c3bbba2f9423c6b9f6e31612095a2a71ed4b1be. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:35:18Z), 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/US8640528515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dc3e4b98b3ba6020e777fd3c6490d1f1b780708f32039000f569d769ca8f0a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US8640528516.