thumb|299x299px|Bust of Epicurus. Achieving is an important goal in Epicurean philosophy. In Ancient Greek philosophy, (, from indicating negation or absence and with the abstract noun suffix ),
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 0xd955ee8106cc81333fdd114c96a47e49ca0758e3dae5317f6197c096798a6aa4. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44f6d7f6-a2a2-453a-930d-f9721b24f4b1.json and https://artists.proofprofile.net/proofs/artist/44f6d7f6-a2a2-453a-930d-f9721b24f4b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x1192562c0dd69b1adc690abc3f6a7e6c092609448f7e145433464ed5e9b36e30. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82012310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefae4c38682da40ef85f7c91363629b26bc86e2da551544a14697cd9a378daf5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CH6542106466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237320fb4a51682155d06849d8ed2dcea8b5c52f2d53281a1b1f7ff54d4071e2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEPI82012240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85d4c8fb627d49e2f6c5ee5051c48a9b234e6403ef8258c25eef561bc0a248e. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR57T0813904.
Spasms (Sous La Coupole Spleenétique Du Ciel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83146fd19523b25151f75993a5018076e9798a9e3e0ccbda803b42876a38767. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/USV291454678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a8a1181709af25e905ba6dc579f2736d4332981d261b5bc340ebed4d1921f1. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QM6P41502437.
Pomegranate (The Chant Of The Elementals)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765db5660dd7c04f7b68d00ce1e134aff670afb238b4883be6135719da519dcb. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/NLRD52403520.
Os Cavaleiros do Templo (Live in Portugal 1998)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dfb80d858818855337db9927590f5e85d5dfcb143a12e68631a8b06941313e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL3M12512554.
Looking for Europe (The Neofolk Compendium)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647a4d3da9abea5a59d72f9b88214a7cac8d9dfaed2d2b40ab3558bae460a25c. 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/DES561599832.