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 0xc483460aeb211829194bf6245d0794a0ed86d6fd7d7b35a8a4685ec2fb80128e. Chain 2 (Bitcoin): anchored in block 953627 (2026-06-14T11:43:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e8be875-251a-46f0-83de-497b6cbbfeae.json and https://artists.proofprofile.net/proofs/artist/2e8be875-251a-46f0-83de-497b6cbbfeae.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 0x946e88c5eaf73c42e9be868d3e408acf006b0727e2d8ebfc1abe848279092822. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/FIFSC6100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0127700276135b333eb8460978e70eef8102576ba6bae7cebfb71ce567fe592. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/FIFSC6000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c78f67e48d45f1aaf12704de078966e50e3aabf25ac5f7df40401a236a40d33. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FIFSC5900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef595eb18d7ff6af98a476d2db002e802f154c2860fb89bd77835212182c6d35. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/FIFSC5900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee6fd1548962f30526697d534b54ba80cdd7eaf5831fd80bc1884193eb13aad. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FIFSC6000017.
Teijo Joutsela, Annikki Tähti ja Humppa-Veikot
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ad7b043fe16bfc1c068025f5a5e916d726637703e48e219e8a6542e4f7e4a7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FIFSC6300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d9d9c356fa019ef7928a233b4a27888dfabcbddd114dc092c93335c4b140d1. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:43:48Z), 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/FIFSC6300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fbc2c56795561c03ca9a09080dfb34db7460045b0497d1faec866e50bee43b. 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/FIFSC6400009.
20 Suosikkia / Vanhan kartanon kehräävä rukki