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 0x93952d116aa664997beb9829958e655c1e5cda1f8bfe0c6b26dc358217642929. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5257257-f077-40fe-8130-b0fa92d62fb6.json and https://artists.proofprofile.net/proofs/artist/f5257257-f077-40fe-8130-b0fa92d62fb6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Siionin laulu 29: On lepopaikka suloinen
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 0x5f2e19cde142d0c583822220eb585a4df1c747d54f26e18ad6ebaf70b7b58769. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FISRK1600121.
Siionin laulu 62: Nouse, rasitettu sielu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7711b7e5eb5faab03d2442f625224287e838d1a1472a3cf4d401a04cdb263e5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FISRK1600123.
Siionin laulu 70: Juoksee armon virta yhä
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e4ab51b71c7fad461f9d84afb6e2e26c92b817d4f0e666721b22990e1673cd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FISRK1600124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d6512705927d5835798ff2b0d209b7ada5dbbba5cc775db85944d321807834. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FISRK1600131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1873283ede11714106d474af1a1d9195b58028aa6550c8ac7973cc21f0aaf91f. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/FISRK1600134.
Siionin laulu 295: Ovat syntini anteeksi suuret
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d9cb11a7093acf80e9af10745b759db8655fe46457afccb28b89c1b92981e6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FISRK1600135.
Siionin laulu 365: Illan varjot pitenevät
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dea4cd453fb93b7839a146c6713fc638be6f5b2ea22b1d55e86f526b46c6b0. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FISRK1600137.
Siionin laulu 215: Kun saan oma Jeesuksen olla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbde48ae95a1e8c10ebe781ddc154b263ed3326b0b59229748ac881a46f8fb2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FISRK1600347.
Siionin laulu 258: Jo kaipaa minun sieluni
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1f80d2f0369fbe45c736d6c81348fc4514a60d5a3352a1ae2646e390068476. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FISRK1600353.
Siionin laulu 277: Soi yli tienoon iltakello nyt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3a7cc24661388b01ca2662eda6dc0441570a6f2249bc6c0120d719b24dd649. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/FISRK1600356.