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 0xe24be8ddf48efc3af2d899cacef69916d149785fcbad1e91dddd6ef41f989df0. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64c12053-3a90-4d39-b123-d4a7a9c00945.json and https://artists.proofprofile.net/proofs/artist/64c12053-3a90-4d39-b123-d4a7a9c00945.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
20 Suosikkia / Toiveiskelmiä 1 / Iloinen Amsterdam
20 Suosikkia / Toiveiskelmiä 2 / Kitara ja meri
Jazziskelmän kultaiset vuodet 1956-1963 Vol 12
Jazziskelmän kultaiset vuodet 1956-1963 Vol 4
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 0x581a8e8b5fb382253b894e5f27e35c79ba0fb0934b0f449f2429640f96bef7e9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FIFMF7700105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bd7df0c823d034dc07ab0145de4368ec25f8371b431e4647640aabf706bcd9. 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/FIFMF5800061.
Jazziskelmän kultaiset vuodet 1956-1963 Vol 11
Jazziskelmän kultaiset vuodet 1956-1963 Vol 3
Unohtumattomat - Iskelmiä 50- ja 60-luvulta 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd021f25bf0ccecb106b1c16ce8c3eff830eb1c4c89937baa6188f97034868a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FIFSC5700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7824c5a9afcf3a8a8785de955eab8e83a90dbfadfa39466a9264a54a07709ed3. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FIFSC5700002.
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 0xd84d5690964d46ab0fa69b1f6dd246c100a8ca7aa3f183afed98bfa84fdcb2ab. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/FIFSC5800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f452a5433ecfbe9dd075c23c3dbcb51e1684374ade5e118c8d171dac580313a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIFSC6102900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8344eaab730549e88b246cc7e0d48f97b33230290e106687381c7f6744f3e77a. 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/FIFSC5900023.
Tähtisarja - 30 Suosikkia / 50-luvun parhaat
Jazziskelmän kultaiset vuodet 1956-1963 Vol 15
20 Suosikkia / Kansainväliset tangot 2 / La Cumparsita