thumb|Toni Wirtanen at the 2014 Rakuuna Rock festival in Lappeenranta, Finland. Toni Juhana Wirtanen (born 4 April 1975, in Heinola, Finland) is a Finnish musician, best known as the vocalist, guitari
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 0x9c91a75ef4cd67ea31f596c2bda75c441d2ce6efc56797f1adedaa59e5dd479a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8011c94-7995-4d7d-81f6-e80c13d8fcfe.json and https://artists.proofprofile.net/proofs/artist/e8011c94-7995-4d7d-81f6-e80c13d8fcfe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sata kesää, tuhat yötä - Boogie Woogie Dancing Shoes
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 0x755c6a5852b80c605bbe215c1812d2244faf2698bc2662b29e89105d1e1505f6. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FIWMA1400251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb709fc05b07a8f5ff4d396bc482978b30c7f7a0c77680f2605c04a9fa7cafd2a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:41:14Z), 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/FIWMA1700156.
Rakkaudella merkitty mies (Vain elämää kausi 7)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86aac2292ef6e8a2432b1e9111506c48c16bb8aa07366f494722e7eef74e229e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FIWMA1700186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad51dffb4f9fa8c4a7ae9e382d4479b318ec1df10105e707b9765db5f61e5470. 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/FIWMA1700214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0444075e1c1e8ec94eca9fe1b9a6a8f117d88ea235753b5c5712a858639c4b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FIWMA1700218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854a07a225959c85f1e1d8e630fd3c73953ab3072d2c1ddedb208b61fd4dac67. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/FIWMA1700221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27103bd4abe8bad66d22a73f73085d2f0810c9a8f2e6859b049da6405a5e88d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FI5RR1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56e26c355ee652392c1d8353b9551765174aab928df6f1dd2c982e877e7fee7. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FIRMX1500018.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch