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 0x30cbb051350fa15d5d75f908c364b6459d0ec7312accfd2884e2fefe9f9bb554. 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/93445d10-b2b7-46a6-ba6d-1a749e577da0.json and https://artists.proofprofile.net/proofs/artist/93445d10-b2b7-46a6-ba6d-1a749e577da0.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85c83bb1053f4b562bdec81c7b0f0840fa94a500029f6161acd45c630339233. 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/USA2P0727075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27c07adb0a9d7d340072ff0cbcba9b21fa3051c934124c96a7325eccfc502bd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P0727076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46babbcb68561cef001a80dd1e2a1a20cc97ac0714d19dacea619e4cb5e10187. 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/USA2P0727077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db0aa22a68ead04c27b81a95bc395fee45d99d96f24785cab0b522de2d6dc2b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P0727078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad85f50643ed6d2c9e8ed33b2a337f2c831c0a51d88a19f6c7d800549cebd6c1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P0727079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9919fd269c2caefdfbea48021fc0c03515bf6f95fef20287ff54bdaa874f6fcc. 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/USA2P0727080.
All N Da Game (feat. Mike Marshall & Shag Nasty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4eb3b49d4fdd4410905381e4764f368b72f7130f19d4eb89b741611533e59bd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P0727082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7f251c29953e847c67a94b5e1e379dd719804b705f53da3be953bf348e81b1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P0727083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf36468c363865a2e1eab2ee3a3ae863143ae187e00e30377cae7f5de94e1d3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P0727086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765f0cf06935e89fd6b6e3af549db4f653e54f1fb679d7d880108a89f446ddc2. 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/USA2P0727087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023df5c8a2e4fbaefa5c08f0dc6db5e167857dbbaad0180d116261958ccef284. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:09:58Z), 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/USA2P0727084.
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 0x70152d6647e4f6bd9d1c71a1e8b6f66554169124d04e5ae842cf79b314fba6e5. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USA2P0727085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f479cae1cb845dc6cb1c913d99b56eaf45c4c39ede05f01e0de10d30347860e. 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/USA2P0727081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815bddca6891ae62e3ee7258b71c3915d011d53a749e52a9518d3e4087b593e4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P0727287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf79d266b0b7ea181a24edb421c66e727c1bec07f9a313fcee9d5dd17a9836b1. 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/QM6MZ1452588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff1745b38366849a965dc80f520a28af301ef0bdf0389129816a291116e19eb. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:05:23Z), 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/USUYG1009463.
Yeah Daddy (feat. Mike Marshall & Equipto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc984f6b95a52ab4696a9e4c6ccf021b4141996378d0b2a461f6d7381ea07c4a. 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/USUYG1024401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06e657fc5defc04a5a95f465669dd062de811e31b3d59a37a2681e24a2c9b1b. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USQY50945532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2618504a0b4c2dbdc30a88bdf2351da0dd5ded59ddff68a0d66687b8d1f3929. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USQY50945517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a204632a2c2a937e4597d92f8f4b611fcf59c19053434e147530410c37cdbe. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USQY50945535.