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 0xffc9b1f656c416800da983c4ef8ea1a248564c6fc58f6e4a1c0b7870f39e304e. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f623e8e-0857-482c-b192-50e8a968369e.json and https://artists.proofprofile.net/proofs/artist/1f623e8e-0857-482c-b192-50e8a968369e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Voix du Pays Basque (Versions Originales)
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 0x9e4746bdecc7abbd0348cf10228f989bfa3986fd908d32e6f164872c137c504c. 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/FRZ510400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ed4974f7171945acfbedb9699e45e1602c7112a9911affc140cc3999d3f33f. 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/FRZ510600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27703cec4405f1867ba57c2b4fa8a00e171b9e03b53efa93e0a3c744ed67952. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/FRZ510900313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683a77e79e322d3836bc91b5ae99798fa6bd584324555bbab69b8377d39a2b91. 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/FRZ519600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fd5320fcbd290d37c058a00a93911c9f7d722edb71e071e80bacb0619c0421. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/FRZ519800292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc382c3fee4557189b2d27b217db654a1f4b701ce3c318755b74d17e06b1bff2b. 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/FRZ511300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2c6e88040a37599be6892fa98a2b307356443b295dae01e505cde293d91ba5. 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/FRZ510400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef7ca8ecb6dfe9a06fc733aabd312eeca6a713db93a1cb3f17616925b6bc5a6. 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/FRZ511300195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5036a8c6e7d0f10c548b0be2864e2cf98f14861b3f3e3a2ee37ea8a5422f5bd. 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/FRZ519400324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6658227e98f3d01c9bf8be520b0cc4f04c9b0e1fcf0580e94613e178e6ec5e5. 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/FRZ511300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff673d9b9030d7673b02c807bf6dcf24ff606af70969d4106090be95d4e386f4. 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/FRZ510200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f6b5f3a6c1f469f313d3b3d3b8906a8bf6b5e4aa03b8fb720a5dab3ffbe2d6. 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/FRZ512300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b14f6b4c701889030c7bc8167ac0c7850086dad95bf97c725e7737a405739c8. 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/FRZ512300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cba06d9583aab1bec539b83f34da15ade03b476ee5275e4d2d09fa582003c1. 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/FRZ512300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa971f8653cec758d955da8c076c7b36ffc4eeab419e418e3b4b176c554a1771. 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/FRZ511600072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645ed81106520144399494c0d0a8dc0678f8edc5b7c0ee8fdc085835a287b148. 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/FRZ510800441.