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 0x881c1a92e3677ddabb34549e4afe5ed625172f49c67ec323f730b5d2f4c7df42. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9461f9d0-28d7-4643-a733-30c67bb3bd71.json and https://artists.proofprofile.net/proofs/artist/9461f9d0-28d7-4643-a733-30c67bb3bd71.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Kiitos Isä Taivaan - Suomalaisia virsiä ja hengellisiä lauluja
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 0xdbccf4035adaa9273b2745bcc4978ebb839d443837e9a55a9038767e37b87214. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIABA2300157 — a six-check JSON result.
Mun kotini taivaassa ihana on (Siionin laulu 260)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa40ecc6d5b900f0e5a2952f682c06b7a9a1d8a65bfa4868f92ad5ca19517663. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIABA2300158 — a six-check JSON result.
Herra Jeesus verellänsä (Siionin laulu 246)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d20a475908f65c89dee2daa905b857aae8534b0a1ba32c44e05e81934c5ce9d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIABA2300159 — a six-check JSON result.
Synnit poissa. autuutta oi (Siionin laulu 292)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe48fcc6b1c34e3c0eb50dd8bd54cad013f2899a814fc1dc5e9fb5c114659c2e. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIABA2300160 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d6b16d817d7f4b1d0aba9bbd395666d4bf94d54744c9520d55a945afc82a39. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIABA2300161 — a six-check JSON result.
Oi, katsele lintua oksalla puun (Siionin laulu 297)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa370c8e45c1c75a9379d6076a1dfb2af4ea10e4927a6529c0fe742d5a76c64. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIABA2300162 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7001de4eec639e1e0955bec18572d55454529f8827ef98868c1ea9f54ef737fe. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIABA2300163 — a six-check JSON result.
Tuo armon lasinen meri (Vanha Siionin laulu 91)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f17e03355b4f5bb1799ecdae16636ed40642fc39cb87c3ca422e7b2e91298e5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIABA2300164 — a six-check JSON result.
Sinulle kiitos, Isä maan ja taivaan (Virsi 326)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28a1c1787458a72c16798664fc7d42db41e09107fc1849e1359d1efd1dcc41f. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIABA2300165 — a six-check JSON result.
Sun kätes, Herra, voimakkaan (Virsi 577)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4f49772019eff562071c7e4e53bd089f909baf87b1f68fea6e40fc8f686fbe. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIABA2300166 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb47692ac970e8d1a1288b49ccca3f8e96644ed74a46e51e4e0b5c92dcdf1f1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIABA2300167 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a429a55b0e8e2d7dabdf54626d6a0b4c1a19040000c9e480f6dc5866ddabec. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIABA2300168 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb73da6987f73c40b1c4887421a14cccb966fc031b988c5df05994759c21104. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIABA2300169 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58140ca7842921edfc80a152fcf5ea66b96bb82846be9f24e5103aa1a47f825d. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIABA2300170 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8649e5532482af8fa9ac7171a0c95cb4fdce301ce5af5f0f6bc77540a7c840. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIABA2300171 — a six-check JSON result.
Jarno Vanhanen François Pineau-Benois Oulunsalo Ensemble
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d8213e66df3cd8348c773f655cb2bd334c9155cfbeea1755235ad9700ac589. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2417665 — a six-check JSON result.