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 0x43185bc2d685a0ef0c0317f502bd753b094e6356f62790a9ebec0b0f737b2142. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2449e72-a4eb-460c-b73b-800dd50570c4.json and https://artists.proofprofile.net/proofs/artist/a2449e72-a4eb-460c-b73b-800dd50570c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Siionin laulu 36b: On Jeesus, rakas Ylkä
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 0x6679a5d51dcf0573692e9fd209463ca9b44b732879daf63e0636d615ffeba7f1. 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/FISRK1600310.
Siionin laulu 49: Nosta katse murheen maasta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c1cffccdd97175e6564ff3a06a2d6751f7aaeacf7ce6cae0e06a603688c559. 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/FISRK1600311.
Siionin laulu 263: Ah, jospa Ylkä taivaan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645b873b5634eb0738802be268c36e8c08cb017785665a31d4d437504c257ee4. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FISRK1600312.
Siionin laulu 264: Siionin tytär kerran saa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc310b513a0dcf5d37767ce2471dc9aa14091ed0708af3e2a7c98d1cc937ea1b3. 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/FISRK1600313.
Siionin laulu 265: Oi, milloinka Yljän nähdä saan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18006e130968d242a758cd02a9ef39ff281c25b7636cd92fce6db040454202d1. 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/FISRK1600314.
Siionin laulu 271: Jo kohta koittaa hetki
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e31f23922f96c02cd7d8f5459af3e3a845e0e3d0311a2bdf824ae81f597e5bc. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/FISRK1600315.
Siionin laulu 274: Sunnuntailepoon soitetaan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ed838abc73b6bacfbc0880e7f9f534901095c8f0bcafc0162c3b9e55a4a3b7. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FISRK1600316.
Siionin laulu 282: Kun lapsen pienen Herra meille antoi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f605b3268d148ee8391854d45adb9ba53cd71b7eb813d74995aaee527c6254. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FISRK1600317.
Siionin laulu 284: Kuljemme kohti uutta isänmaata
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d43dde7641b8c49c2b7097c486585fd168e8e80679b6387876f58f33d1c9fbc. 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/FISRK1600318.
Siionin laulu 290b: Jumalan luona kaikuu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9295f59fb101cf59c08c35f3d3df25e5eaefa79a1b6a4bd9e5cb5fd8f958b5c5. 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/FISRK1600319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393d615683c45c7a24a0706a52ec12078699a63ea4de356ae91107d92c49a352. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FISRK1600320.
Siionin laulu 292: Synnit poissa, autuutta oi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d23d03dd071f2f711cecb4d1dfc584675512353e3e933a2434d9fb41641ac5. 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/FISRK1600321.
Siionin laulu 299: Oi, kuinka voisinkaan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7026b3cf17bf02440f620905566a3154087906782c920ca8dc15bac6e965e7e0. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/FISRK1600322.
Siionin laulu 338: Herra, sinuun katseen luomme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8562312450e7e8e2cd1036a2180012c49dff71f2ee8b0b62ad6b569c68aba450. 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/FISRK1600323.
Siionin laulu 344: Työn vuodet taakse jäivät
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde473ae02870cc1242845c5061784a736c314a9c1993ebd11150c74cf1481f7. 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/FISRK1600324.
Siionin laulu 354: Hedelmän jo usko poimii
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c90bfd6604c986b7785ebc5ccf88d1b02a5b76d7a0ed0689f1ed28eee223b8. 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/FISRK1600325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb48a2cbeea7e05bbfb3568c1cab32528aca48b7217a4ebbf24b63fdd44577f. 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/FISRK1600326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0286b46598c6b3c66b9b1ff49256c32f5153afa65c10ad48317f511768ca9fd. 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/FISRK1600327.
Siionin laulu 32: Katselen Golgatalle päin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40892803775cbb4c45465cd54dab6890f19e8eca0d5918947c54fd86b8024904. 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/FISRK1600155.
Siionin laulu 33: Golgatan voiton sanomaa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd03cc7a6644d63b8176f44d85caebf551717a364ae3718dafd12c63588dc9ee. 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/FISRK1600156.