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 0xff54ec57426e09224b3cf33e389a3437df1d07a81e9babde00d2dab6ba19de7d. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d5b8189-bc5c-43a4-8139-e0caa5ec3c25.json and https://artists.proofprofile.net/proofs/artist/4d5b8189-bc5c-43a4-8139-e0caa5ec3c25.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 0x237ed99cc3a46b555089bb2fb6fdc2adb5e889043793ade5955de519225466d3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITB001200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1ba9acd4e7be54ee1a82bd77b7dc2a966e218093a726d41efe284015e11f11. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITB001200183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c52786534b9a1e106b71b6c63188c05691152597c17a871c6ec21018189210. 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/ITB001200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1af43def5a9f84492014e391569ec41bb4ac3d6cad400f228421104be562ffb. 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/ITB001200184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd9a0d4bc5188bc7e78be6d5492cc759c988ed2480cbe34951873469a9f72c8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITB001200182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8a33f7f6026f918b592c70a09680b7eb90f7218d5d87376c49537a178a11ca. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ITB001200187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9ee8c06a50d99acde284169d2bc4dc446f857b6407879e924f2a13dc05bdd6. 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/ITB001200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6386d67fec7938fe8dcf0c291a408596e9d9db79489754c560ece90b5dcb23f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITB001200185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a64123f0bf77e154e31b3186529033bc33d13b8c6160347e4f0495d4171133. 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/ITB001200173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379e6884522779c9107e3d988004f41348eaa912a53803bedc85308e7f23c2ce. 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/ITB001200179.
Non capisco cosa vuoi (feat. J-AX & Max Pezzali)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eaddec57e4dd2412b7c2d5dfd6a61a7728477b768731e1b262e1218d27ed363. 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/ITB001200181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffaf12a6dcdcec34ad2d3b08d22036c7e1b9449a5eafb43b200f76c81e89f21. 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/ITB001200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca48b60f30753a92a0df60866086aca73ac84c5f45d2c19cbc81e74fe9a6ea4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ITB001200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2652da92daae21842064af7c59b0cdb6fb10083a4d70198a9b93941277b699c5. 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/ITB001200176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea42d03aeff8d19314a62540b495cd00ed4ede2d86a5a366f5ba8b50596fe780. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/ITB001200178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0dd4e1603d2172c4b561483b313017e1bff7f3f5ba2e5e8c0557361cee1274. 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/ITB001200177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6fc4b55b97da7bf798fe547ea0aaf1990cb8777166b3426e346157f80e1248. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ITB001200175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd20b6f9897d80cbd9e13de1d6b8f607c0a3caee6c9dc720fdabb7ab8ebb6ec. 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/ITB001200180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089b7a32a3eab5f9a3cc62e0a4c9666176b778690a6a079c78a36f66c1b4c06f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITB001200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992e6b59e3461d2280a7915fbbfade876c77343e396d727501d2e37e99d3f8dc. 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/QZEKE1934725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dc0b914dfefbb6ad49198fb881ab815007ff64e54a68ae0b566f38fe0328f4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZEKE1934728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd19e76df55e37fe16472e373b511e492ac7c5f09febaffadf42829d9d8fb7b. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QZEKE1934729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70c0d3cb0742ab41c58c021ade0836dc9ca072c17ba19076564b827c2539319. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZEKE1934730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bd375a122cd3842fa0eeb2d82f6bac19a92bab1fdc414aa7854e12fba6588b. 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/QZEKE1934732.