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 0xf80faf05850d502a91a3a845fa3b295f908362f04aa230af39ded6f5b09d32d8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17a09b53-cf06-4c56-8895-357d534e6034.json and https://artists.proofprofile.net/proofs/artist/17a09b53-cf06-4c56-8895-357d534e6034.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 0x13deb88cecf08e6dd53d8ea452c7a5b13a452579ccda3c17a897e8e214438454. 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/JPZ922111293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28275d7b053a1d55f74fb3731b7261bb8e09078e7a8c4ec9e9855404e1be6f5e. 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/JPZ922100174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33a0a7e8477957e4ea9d1257147bc7bc592149cc6f1bf1110489c51ad3e17bd. 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/JPZ922114047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828db57d1c86340954a0bcdd56f61924eb51996c1ee6f3e6c7dc16fd73bf7a64. 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/JPZ922106189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb80111e7408c9890015cbfeb593f4cd175c894dbf612c56611112c063843ae6. 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/JPZ922011843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf398a43dd2177c673d4efca44599024c2b9da93256a18e825935fe0f5c22bcab. 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/JPZ922114050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bbb0de4ccde1411f56a1937edce40ac3c49bdcf84827d50e0b373df1cb2bef. 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/JPZ922108282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13deb88cecf08e6dd53d8ea452c7a5b13a452579ccda3c17a897e8e214438454. 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/JPZ922111293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0437afc64df3945d205e67797ba542d9ca031c64296392f39214bcc1c646250. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPVI02203505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0437afc64df3945d205e67797ba542d9ca031c64296392f39214bcc1c646250. 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/JPVI02203505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f6b264d81387a586c8a9f1cc7f7a20b42aa6f5ff6b37fbf5fb3c941111519e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPVI02402742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e6d80981248b7c7fcf5094578a4cf8a911507feacb69aef5493b43daed54d5. 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/JPZ922202429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc8f1b98681c5a05b38eafda0849312bb00333a29d87c67fcb89472bbb27eff. 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/JPPO02202523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc8f1b98681c5a05b38eafda0849312bb00333a29d87c67fcb89472bbb27eff. 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/JPPO02202523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e644b89c5c021477d2e9a9aacb8dfe20d9e4524e8d9d75ff82d60a9e6d677d. 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/JPU902401088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899a2cf23618635e4492ab4bdc05f3984e26a56d9021bc56d18e82b7c4084e88. 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/JPZ922206803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d74d0f5c1df68ed9a85e2ae3bf919c205cd44f9a519ab35b48fcc426dc092b. 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/JPZ922103306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff3799b97ad1395127ef681924792aca087918e101d8ca82cdaa76c904b4545. 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/JPPO02100001.