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 0x197e6dd3e509778ed32c58754da4d1b22d06da3f3e2069f774b4b5eadfd26a58. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbe21a03-9050-4b50-b367-86ffa41b33d1.json and https://artists.proofprofile.net/proofs/artist/fbe21a03-9050-4b50-b367-86ffa41b33d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lumihiutaleitten karkelo (Hiutaleet hentoiset ilmojen tiellä)
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 0xc6b8c24d50b6128761bd394e7dbb154c0f9a8f712d775dc596240fbb2a2cba6b. 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/FISRK1800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dffadb10461729de75f8366d20cd458970e71a4aebbf503b7f7da1d2eb6c816. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FISRK1800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a949fd2b2aece811d1fe651abe446e9096a5460ced0e828bdd2c029142adce3. 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/FISRK1800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84276af2bd0796f821bde09b436fadfae6c7d6d56c4b4a0edc34ad3d9b2daf3a. 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/FISRK1800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681b1aed1b0bf19583cd438c6bf97bafba6d0a2b982c85b3637aee9ebb7317fd. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FISRK1800064.
Tonttujen joulukiireet (Hiipiellen tonttuset)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856dd8d40013765cabb036c8345875e544bf53168d27b418177faa67308dd6ae. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1800066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67a4e0df1e07ad3f0ed10f67b00bdc42c4c3e2103b27c6a311778d50054d6c5. 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/FISRK1800067.
Piparkakkuleikki (Nyt tullaan, nyt tullaan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b870532add0a5a976a1dcbc9ed852ab67cf1b92922c5d5cf2d56a697f0492ee. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FISRK1800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6903d6c05bbf838b9c983be8a35c8ccb9a5d3310a95fb79875c5981deab84a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FISRK1800075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300c06d5ff285804ca1f9c4c1f97445d40dc0a9db0abc022b2c89ff3165e45b0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FISRK1800076.
Laulu joulupukille (Siellä missä tunturit ne kohoaa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a695bae683fd538c119df55dc120e8739be3cebc9c1aea962f258a8883f0218. 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/FISRK1800077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de1173427139d43283b88fd1277f3018749586ac4b558f5e7d2ce17ae698229. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/FISRK1800078.
Betlehemin tallissa (Ei ollut paikkaa muualla)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00399c2c622b7731317addf0340423efa56e6a77e8278bdaa8d7f2ac35521a1. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FISRK1800081.