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 0x273a036f3dcb2d4752417e05eb6c11871c6586817be50e13c89c684d173e208b. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb86033e-fce0-49a1-9496-0ee15d24381f.json and https://artists.proofprofile.net/proofs/artist/eb86033e-fce0-49a1-9496-0ee15d24381f.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadea4b6aa4234790c48edb3005db0d30f73728cee660a24749f622e687eb14c0. 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/ITZ681000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a44b6f18ba817e02352ba4bc2cc4f7931376755051e9c6bc34f84fe3bf7aa7. 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/ITZ681000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c117051f78d4079878c81ae42771eb749dcabe056ae4e6e9e2183fb4f778ec. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:35:07Z), 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/ITZ681000097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8431ffc3fc838b30f13e2cf31eafa57eb3b346c343511142e95b4a0797a8f70d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITZ681000098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30554c524947cafc014f05c6798a6d3a380b3b3ea130e6fd47b96174d0870d82. 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/ITZ681000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d869abfeb6e0f1bdd8cdbe52a454da1bf34e330f0386a7e2a8f0eaef71d862. 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/ITZ681000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc764d3eba8da7a375746c4793089f9b318791c03a7a30ca51e2e03b94b78f0cd. 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/ITZ681000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d145150a5f5cf85cd7100363d8b3205295028f257f107d64b17a2706bb37f2. 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/ITZ681000131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3f8414b56bca72c408fe0273fa48def1d5732e90dc8fbc4b6246c7b76076a3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITZ681000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe897c9c6dd74b86d5b1b84f742f8a70764ebf85ad89b1433953e846ad5e4e6fd. 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/ITZ681000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3945cf6255c48b067ae98479c295c3f5b4bf7e34bbf9262a107c28b95075be8. 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/ITZ681000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9782492f61f808c44749b2e09064cd1fcc9f3b30cbe2ac71cd75739745a7ce41. 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/ITZ681000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c140226a0595773a84dd855016c6c0b6b86153eb09e41fa67f87ed4e567b9c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITZ681000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d006b2f9f195a35a9ee0f55e67b74e4272a57a2bea933134019070bade0fd3. 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/ITZ681000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f2c6b3adcda379a53df8e37fc87bf21cb1021241ab4a36fc95370be501741c. 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/ITZ681000107.
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 0x1bb3e3c86f917d48dd9a5bbe08e53109449789ea342ea83667c413db566391cf. 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/DETB31602011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5987136ef134a085f5238c6fbfeb7c4073d111bcdbfe53458b518c0c5dcc7c47. 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/DETB31602012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f0c46540038a4157ff5f018dafb54dff705cbc53eaef54e72e3d35d2f04cae. 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/DETB31602015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f4e0e9945bfb1b930e07620115b909754bea59f725d2df67ff75a2d897cd15. 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/DETB31602017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733c65406a2c5e3a638c4c2448637ff14f2dd9841c48bd3e01780e8c8a4775fb. 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/DETB31602010.
And it All Ends Here feat. Antonello Salis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce674682ec6637b40c5c8f5590fe36537730167cba1404d8695183e9fc08e57. 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/DETB31602098.
If (feat. Antonello Salis) - Dino Sabatini Variation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243c4b7e8d46322d35512d99fb312a6a75c5bd615858537606bda9e459e75d36. 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/DETB31602022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44363d6ff29cff07b4c398bdb7fdba9f62944fddb0883e46cf8f7f9492ffc08f. 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/ITC000851207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa8481b585a45f94bbd6f0d1cacd726f7f30bbe1be9ddceb0fac4a5e887ce67. 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/ITC000851202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb3459d34277dc90b1c55129c2032a5b74cded05d08465bcb78ac41a3e5f079. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITC000851205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1abf399dbd409b78e65a1531b29306e184b1350ee1d542ccff29ff35d75cb21. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ITC000851203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b69847377e9b64175347a82f59a401b7b4fb91a159405e960f0707071d20ee7. 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/ITF702520501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07e0452203ef188fc25023bc510a00768d2ec4f2a3e09b4eeda2b19482eaa8a. 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/ITF702520504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925af752c8841cf9e67eae1da58d079a3fb887a31c5a78734495bf24a5975624. 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/ITF702520505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425092aa2a25729aad477591246963af15d620e9f89c4138ed16686bf3d1b6ba. 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/ITF702520507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25148df4c5d51a1ba26435bf8daae44aff84cde90bec1a38e0fcf3a5aa72e4f. 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/ITF702520508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dfa394c84d82fa1e14424a9f300ae6bc63872761272f91beeafacf0a80b3b8. 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/ITF702520509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187c3e01e7c8d1edbdc2c1ae81fb2587a15efdbffba7bd255124c6b52fd8a5fc. 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/ITPDM2500066.
True Live Walnuts - Live at Europa Jazz 'Festival Nocì 1997
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d65a80f4da03e650120fc5a2a563f77b8aa29a4ff3b424afca253b7c7a817f. 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/ITK601100190.
Riccardo Fassi Tankio Band Plays Zappa (The Return of the Fat Chicken)