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 0x36ff4e818407069a7ebe04277d3a4a54cc44c173f16a4c49f3dac97ab835264f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed55e172-f3b1-4073-87a5-b6bd584277cd.json and https://artists.proofprofile.net/proofs/artist/ed55e172-f3b1-4073-87a5-b6bd584277cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
13 pezzi per svuotare la pista (2022 Remaster)
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 0x9b2f6dbd53d340eb944cdfb50b913d5328ee951a47fa1fd17742f83c5c6120d4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ITL600700178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c603a908f92e54d311c070855a168affe7614466cc179600c5759f18bec8955. 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/ITL600700185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e4f59a0b62c3edfb782964d1b966837e6b3cb6175f910bfd3a3457c1df9a36. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITL600700186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1761401438ed1c7663e69e7baef8af8168734814dcfcaa0a71ba242c21d6be. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITC940500195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9f6d8f0b84694a9ad0352a28ada8c19346f2999882ce8de5322f21cd3a9620. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITC940500196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ae89f057f64eeef76dce445a47e908d6e3be4a91a323cc4fc96bedc021ef82. 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/ITC940500197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0e5e07a907703cd471180206f0d2a30272989fe8b354468875657e86b6300f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ITC940500199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e8737df79c8dfffac2146d47ac0cc1c2d430ab1fd30ed9358e7c653848fbb9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/ITC940500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2c0e72b062498af1d2fee1ae7038983e97d270e39fd4092f5748b1fd639af8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ITC940500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0e731c60bd28e7fa1b77d95b910da8265fe8c8d4acbe76c5042533630b7ab6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITC940401133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77df85c3ace115e291e40a5635a655b4173f8ca45dc059426d52ff7aa722c81. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ITC940500194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1761401438ed1c7663e69e7baef8af8168734814dcfcaa0a71ba242c21d6be. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITC940500195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9f6d8f0b84694a9ad0352a28ada8c19346f2999882ce8de5322f21cd3a9620. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ITC940500196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8325c9b496b6c16733606a21a8893c519ae6481b39e345b8e65a71a442dd91a8. 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/ITJA21600321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0820f707cf29a1e6844eda3bf5ae5531f1cc6e3e7cc27bc7174cdabfd9feb89. 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/ITJA21600322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939fa65be64b4501e92e733c0223138a2b26755a1c529b6ce5a84e35c597e83c. 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/ITJA21600323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2e67881b8bd14b281ec4b3f6d5897c0bad8369045ab1b07911608246e24388. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ITJA21600324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffae3c91db08e70b2daa6fbe184a79d4dbad639defd44e4ca3fa8ddcbc4cabd. 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/ITJA21600325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd15b667c46ead523b0858843c2e48a54f6ecf2e0a544e5f984d1c82ef4c6f47. 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/ITJA21600326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a44b292589ce2a5a8854595760eb3d6cc13cf28fdee63b652181aba9a9b3a25. 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/ITJA21600327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4d708bb7940e82d9f039b552348b663b31229fe4de2ee8d05c1c2154e70f4e. 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/ITJA21600328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37870323123d78798d7b9c6411bd81347186472b05cbfbff1d2c9021aa41acbb. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/ITJA21600329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc68fbc53542cd635de53140e462c39be1a2c670fe49696d181bdfc81587bd94. 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/ITJA21600330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c86694f6eb923fff1fc7f46cb8a317e778a811add7b2aa778c76deefe11b29. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/ITJA21600331.