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 0x0535f1ac364757a60589f626705074ead03fcc474d894c2cf269554a86bdce81. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1573906f-728c-4efd-b881-01a8d7944741.json and https://artists.proofprofile.net/proofs/artist/1573906f-728c-4efd-b881-01a8d7944741.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 0x9fd06dac6e374aeea933df3d287d3144dda3f182aad619ba7b97847aeb0c28d9. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/SEYOK2008838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c706dde1f3e9355e11a9f4d34520b526a6ca7f04b0a6c3d1813a75c376702fb. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/SEYOK1506462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b3d9a39116680eb289cb9e8526a491681a5f4b4bacb4419cff85045566f018. 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/SEYOK1506463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5707db47719c48dffc5d30186079b7b9bf8f3d58c796351a50e58ea85a0f32e2. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/SEYOK1506464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f0ebbef14d01698014f44881770568bdab05ae58857bd9d62d0eb8274dc352. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/SEYOK1506466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9065ffadf4c52e3d53a15b1b89871978af9321496067e4f63c55c52ab492ce52. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/SEYOK1506467.
Difficile da capire, impossibile da spiegare
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ffcfb811eee498f735b42cde7e0b2c41612a746b9308504f8743dd21d3f382. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/SEYOK1506470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb46d7a514fa85722fb86187a6c8ec4a985648ec403a51f92dad0787c2c02f89. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/SEYOK1716682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a5405ccd62f42a2fb0e2065488feae99b6b7b808fa06273432765962b446e8. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SEYOK1716683.
Introduzione alla complessità dell'essere
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba4de4eee4773746f5b97202894857512b5a7245ff2765eee04d73f31c6ca3c. 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/SEYOK2515365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155e39276020faa4ccdd20b69b4b3bb816a97f000b68d87b940ab7c4a2f0397b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/SEYOK2515366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d502c13c119cdd3a4e758004d0a5f34f51155c61a03a24fae06ff52aa1fe45. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SEYOK2515367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fa3026e6ada7c012713a52af241b671ddfed2fb01427d18d0aa800ed6ea93b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SEYOK2515368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4906520db18fecea6ab61452dd514c00792a6ff91acd7ffab872d85768e2594. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/SEYOK2515369.