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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d07223655e49b4054fbacd9cd9e0489100a61ef9fb30d648411ccf1f6903ef. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92a95603-246e-464b-b8f1-3a08c811ff44.json and https://artists.proofprofile.net/proofs/artist/92a95603-246e-464b-b8f1-3a08c811ff44.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dccccab6cfe8048dac141d75aa7daef044d7eea6772a619027f559b4a8e27d0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FIMTA0300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535e22247e11ce70d0efb89fb054d2d934821fd4c4a48ca9be82b21945d1efb5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FIMTA0300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b8947d5a7b3fd5422364ab6a45f21215a92099f7065e54a69717047bbd7998. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/FIMTA0100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fdf1a8532772d55d50350cf71d5c7e2d51f2bd651c6401509abe0698add3a8. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FIMTA0400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5e5aa54301ccda799ec6bd716da2b7b8cac6233eaec8b9af04606240ffe7d6. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/FIMTA0400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ba682abe0adefc12c5463a70504f1d2ecf30c879d8abeb51ea44e66d3d35b5. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FIMTA0600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4779196665a76a0d5a81dc5d6458bf465716bb3a478baaaf44ad328d1d85e5. 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/FIMTA0900102.
Rakkaus on kummallinen drinkki (feat. Eija Kantola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd06892f54025687dc004bd6dd00e4efda5154b651eee62c83a31f36904fabdb. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/FIMTA0900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4fb00aaca72cd3f0ae8388bbe2a8c0aec57c19d993f97bcd15f024aaf7de12. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FIMTA0900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa687efb75be4561466bbdbabbccce12935973aabd064a2d49f3784e29e5a6baf. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FI6PM1400004.
HittiMedley 2017 / Kosketus jää / Déjà Vu / Simsalabim / Vieläkö / Omenapuu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca0bf9761aacc5fbd1cec890ba8dc45cc9644095f5e13f7ad21a1db5113e377. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/FIMTA0200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b8947d5a7b3fd5422364ab6a45f21215a92099f7065e54a69717047bbd7998. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/FIMTA0100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ed8968791d151ad0ebd057b129b8569a4fc6ca73b349f9eeeb1a9482160bdf. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FIMTA0600085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ed8968791d151ad0ebd057b129b8569a4fc6ca73b349f9eeeb1a9482160bdf. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/FIMTA0600085.