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 0x9118a25758e795fd61ed82a171aa3161bc4bb8f614d2ad30380a51476cccf4ec. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6eebebe6-0ea1-4e55-877f-6789f8799e36.json and https://artists.proofprofile.net/proofs/artist/6eebebe6-0ea1-4e55-877f-6789f8799e36.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Toivossa riemuitsemme - Suviseuralauluja Helsingin Tuomiokirkosta
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 0x5757bb94e1a94cec2e364413ee029ac7e893c2b933c53cd477d2e4603e58afb0. 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/FISRK2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74437cf07aeaef70b3e523456cf5e9e000c708bb0d5a8129198222a414547cb7. 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/FISRK2300010.
Taas Siion Herrastaan riemuitsee (Siionin laulu 119)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4522fdfe56929e027484d49656f3e67fe4bc94152daca0092fc3b361adbe6e40. 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/FISRK2300004.
Oi Isä meidän, huolen meistä kannat (Virsi 366)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffe03938837130475d9ea991016ccbc1e2dc7d04d5181e2ff41513ec70d8590. 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/FISRK2300009.
Nuorin silmin uskontiellä (Siionin laulu 193)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbace8efd40d5cd7010454a39567e7c6d02e44e06f485092d1d182b2b3025f4d7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829d9a0eb5efdcbcec290ae41f3138cf8519e6bceed8e310451a3729f9973b2e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FISRK2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ea3b6f1392f4a1181b4e703b65576268f72687d1d6690834f449c593fa7781. 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/SEYOK2403365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5364bb5b8cdd3ebd87020872426598856748f889b29fc36998e83ceb1ec4c032. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/SEYOK2403368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ab31e63614f6e33427a795853c991d005b22eb7e9b4981743709ff62476626. 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/SEYOK2403369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808d78bee3cedcfd809ce2378f80bc175c3590dbc1ef8309af65dec9ba23b380. 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/SEYOK2403377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81f24e40b3d7371bb83add39ed14857f797817cae946fcf678e9f893c7af706. 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/SEYOK2403378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7c05bdb5bbb6d150d129eb6354a28fe06127f08b05864e9dee13801a4e5471. 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/SEYOK2403373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798e91151bca467a889242a0d8abe911768032635a6fc3ddb93dabb30c051978. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEYOK2403379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee825214d65f674fa14dacc8a43632b0ab2b94efd39a6bc59346f3d447f3230. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEYOK2308944.
Päivä päättyy yö jo saa (Siionin laulu 319)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca378426eed6f74d932eee03eaf2e515f108e37a895de8c5e2ab82fee2d3278. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/FISRK2300013.
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 0xcafcebdd54cccadbd8f85f9ae7cce369bcd8afe8b6b5c96a809a01a54ebdb720. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:03:16Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEYOK2403366.
Virsi 479 Sinussa Kristus luotiin kerran
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef768652b77f14d30c637f112ab610698707a8b70b6871ba8810936aff2b991. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/SEYOK2403371.