{"copyright_id":"0xd001587f93e4c6f2156edaff134f70a31ff92cfaeb4ccf63f62d9aef1798035d","name":"Manu Martínez","registered_at":"2026-06-12T07:49:26Z","symbol":"NIM0233151","token_address":"0xbfac66a0a09cd6f4578d02bbfdf5eb907fd1525f","type":"artist","uuid":"b422b2a0-bbf7-4bad-acf0-a0a7a6eebf5b"}
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 0xd001587f93e4c6f2156edaff134f70a31ff92cfaeb4ccf63f62d9aef1798035d. 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/b422b2a0-bbf7-4bad-acf0-a0a7a6eebf5b.json and https://artists.proofprofile.net/proofs/artist/b422b2a0-bbf7-4bad-acf0-a0a7a6eebf5b.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 0xe16221f05b5713149c577c4c1da6383776706351f032f8b06a4443e2393778b8. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/AR3692000058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04fbbceb902ee1e4e51137289e16a60fd4a5e1b4bbee96431142d39c21b9771. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/AR3692000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905a579e2e5d356e65572376d0a589b51bc799aec8006b71ac9889acef927b8a. 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/AR3692000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34aa230d2126b50eabb571fec02bcaf96c3f80effe16793a27a68890513a853. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AR3692000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb54dad5585b7c05eb5d9fc5ad18168ab2d90c59cb626ca246ad58c099b11471. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AR3692200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64190d66f6bdb28f44a4c2ae3e951890310e7070914845013c57903e41fc86df. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AR3692300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd1ab02b1bf9ca63de0902b61c983e06c28cf219e45cdad6656ccd9f28fdaac. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:49:38Z), 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/AR3692300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb54dad5585b7c05eb5d9fc5ad18168ab2d90c59cb626ca246ad58c099b11471. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AR3692200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c9b8e716e60dd7d9c20968517893dd2eeea2fb836369cc9f9d3c5a52e6a680. 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/AR3692400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb89e0ba0503e8f2a835f38f77981847541fb9914d247ed10b3f854443870ed8. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/AR3692400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd1ab02b1bf9ca63de0902b61c983e06c28cf219e45cdad6656ccd9f28fdaac. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/AR3692300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2522bd5d771df31daa85399758f71460906b18f1ee9ac30e9444280664f853. 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/AR3692200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97efef95e26d9c84b17ed6cbbe332fa8dd2c3240c5985f1b38656d85c7ff40fa. 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/AR3692400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64190d66f6bdb28f44a4c2ae3e951890310e7070914845013c57903e41fc86df. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AR3692300002.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee45cbba5cd3bcd41a6705f53f8478c2240b3c44c9acb2b58f04e7c354c64551. 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/ART2R2200042.