Teorema (English: "Theorem") is a 1968 Italian allegorical art film written and directed by Pier Paolo Pasolini. The film centers on an upper-class Milanese family who are introduced to, and then aban
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 0xf4ae6e776e451cc389d2d66247a796800b2422bfaae726efd37b90a32edce202. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16d9ac0c-e82f-4d8d-a6f9-5a5d7ad5ca93.json and https://artists.proofprofile.net/proofs/artist/16d9ac0c-e82f-4d8d-a6f9-5a5d7ad5ca93.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 0xcebd24811da3d3999d6e079ed315f6d2c0bb7e95075a6581733a1f079a724784. 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/DEAR41849074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3b268c40ab17265efc15933700581c941440e3fb29679393b293940408a3b4. 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/DEAR41847436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841ce525427096620a2cd49db9346407e2e92880c6188be0fea923a3dfbbb110. 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/DEAR41868569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde39f64083d0762d59ddcaf48c36ad0ca2f05766923100d9bc8357f4afd5c7a0. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GBKQU2310266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71926ec219ed531e1c23eb7663f295989b9c6d1d2b6eb29071624afafdbf173a. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/DEAR42344897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d498f3c5aaee64c5d57ed9356922f3e35ac8dafbc68e9ae252955f90d79a5a9. 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/DEAR42382025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6307449d7e6692c18e506d4e34ebf414e33f316561d2278da3d4518665ed69f. 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/DEAR42208918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b016c8b5f2d4a3eb3a1c78b6b7cb84bb72deee92f54bddc21157be27113aeee. 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/DEAR42223448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc730ea50230bf1d8f32abb09e2c9992baeae7b037f7612e33ae62f1f40df91d5. 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/GBKQU1867079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4adaeaa5d3e6a9c61b0eb288500791b77d5edcf6f1d0802a862ad70bf55f04e. 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/GBKQU1867080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe2e1f8b3907bee01f380c48384195d8702dd8c66872856297908c838058009. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBKQU1867081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b361c3afb824c139226b133c5ddcdd8011c782717e0555e026864a2e74e2e7e. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GBKQU1867082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4991a7c2e7d38643267e35d1c44a49df3802b2c84bb091c6f48a0f1d855a9637. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBKQU1867084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42911a8650bbbe4903e19ca377a8bee744a6d5e2e001ec57d5c86045ee941d37. 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/GBKQU1867085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25adac9eef9cb122b2884113c4012b3c10e6dd0d6d37a713141e262d03aee9c8. 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/GBKQU1867086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d640d24abf44bee729796312a015e68f193c43d242c150ae16ce4e86789150. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBLFP2029651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dcd0367b2b720e60e526bb280931c189e7224e2ed784449a23c7e6a64c6eda. 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/GBLFP2029632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b727343b628fd4fde7adc11479e8a3bb486034aaf53b88ec2d82dba5c0aa953. 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/GBLFP2029075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3300eead84ea6ef794cf224c30f51726686578fc0c986f8ddc76ca45578ebf01. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBLFP2029149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979da1d22b39beec2c6ec3d9b671d2059f82e75ffdcbf2a8260b05bc37deed1f. 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/UKACT2010304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6e498f1be4c0c4615340bb588e30192aa7d7f1a53769a99a81c3c5e35124ab. 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/UKACT2010307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6800e5d27484e147d9c3d0d5b1a42a76b8b142746ab156b0d97955d83f109131. 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/UKACT2010308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1911ee5d77609dec9fe2f6b47027ddcceb574fb6cae2435fcaed59f82f41721e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEAR42130303.
Anderswelt, Vol. 1 (The Psytrance & Goa Compilation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc75d310f62b294605d9a6ce2bb9d55863fb252380ab875f0c8aeebf6bd6623c. 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/DEAR42111207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6191b4ef9e1def691f59f8f680afe28501d7fe22ca1b7d16bd8069a43b877c71. 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/BXG9S2500132.