thumb|Henry Theel on an unspecified date. Henry Per-Erik Theel (November 14, 1917 – December 19, 1989), also known by his pseudonym Heikki Hovi, was one of the most prominent Finnish singers during th
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 0xa2c496b4f84a952a6dff5a9119531b65af3d85444cfb96988ab31450994a77f0. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/336fbba2-4313-4c85-994f-19fa23f17368.json and https://artists.proofprofile.net/proofs/artist/336fbba2-4313-4c85-994f-19fa23f17368.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 0xb288cfa46bee0bc604d29e87e9f2ded9b4c966c82b227124d33f1c2c22e39619. 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/FIFMF7100086.
Tatjaana tanssii - Vanhaan hyvään aikaan 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23079560bc0231ddf8e99558b989c22d6f339e247a79fdc11719519ed464bc9. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:10:56Z), 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/FIFMF5000900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9f4a5e5240fffa437bc7c2ab2c3efa7095b3a58d389c57afbe4a4e62dcaec2. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FIWMA0700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa950829eb769d8fdde228e0bf8c3288c3d495ee4e619220c0b512e8ba865858c. 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/FIFPS8300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa950829eb769d8fdde228e0bf8c3288c3d495ee4e619220c0b512e8ba865858c. 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/FIFPS8300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64304f09271b1a30986f2b3d2110ef562f7d3a36be0a91d25086866e262c7b58. 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/FIWMA0300290.