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 0xe2479cb4ee3079ce103424024b1f41dd9212837acbeca4b35704e66899f5faf5. 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/ba491b1c-9553-4ea1-9d57-283987a382e2.json and https://artists.proofprofile.net/proofs/artist/ba491b1c-9553-4ea1-9d57-283987a382e2.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 0x499a5727c2f5bc86d500112e74fd1347e0f116e47a1adf65b4222641107dc94b. 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/QMPKX1790081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a96268c42d849299f565c686019bab37b7fa009520ee332fcbd51aad2d4cf3. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/SE5Q52000186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9efd50942f58901afac2ae82aee6f1fd6c3470882ec36c63fdc1f25f68008f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE5Q52001311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fe809fcf4dd8b4eebedf384d11718587d86d2b808b673372eb2be58858bccd. 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/USA2B2317865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b9893a6fac4f23c60ad486ed907fa7669abc946e4e172441780b8dc3feb126. 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/USA2B2318456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e9c5ee62caf361e44aecf63ed3a88eba67daf31a679ea976958d1e4e49a6ac. 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/USA2B2401294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fa7f841ee7fe303f0a8709c89539a071a69d8b5f7f4875b1421be5c57a9e4a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USA2B2400756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d36c69bf0c3cb7e6757760bd1e9f9e189d7419191f12ac46e864e4aa723ebe0. 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/USA2B2401296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5900d3883d02a7bd88c660d3953d30b5a6065c8d3ffb470b4307323bf6e7c4. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USA2B2401297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcef82252c9f275a3750e5b538c4ebdce794fe520eea2cfa7548378bc3882cc. 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/USA2B2404804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa1653fdc1bbaf8f782b61a8eddf79ce15de6c3cff49abe28e9faf7b053761d. 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/USA2B2404806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df8194a4ac6d2cd865cd9f466a3f251c794001601b9280cbbe04a239018893e. 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/USA2B2404810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960a890edb3ba25ccc33a5d787e4e75e3cc6fbd35b9cfd04fc1910bd9458e717. 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/QZFYZ2593856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652f939be0cbe06ae9a1664e50287bea4ba990ca5cbf23bb6c65aea1d29b09af. 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/QZFYZ2593859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62d9c7714d874cc544589346f1898c4239e2d8df5356f90f9b26c42af4d7e5a. 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/QZFYZ2593864.
Recuperating (feat. Gabe 'Nandez & Fly Anakin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bcb943d3978b5dc403cb078e7acfc5253a2a3e3036bd683dab1e37edb51287. 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/USLD91750370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e51f1416212d56f827509444946810f42d31f71330e946b046c9ded641b288. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZNMV2278795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc21ff7c56f2f1da87bee6193dcf7426d08eda164ebcdb998a6d3c1c76d05156. 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/CAH682300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bbb60cf6c3cc3b2457ae118e76249ae739eac76b7b867db1eec5d2f7edde58. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TW2274621.