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 0xa72bb24e84e4b6b7c634cb41366fc1dcbf1a8dba85c82222762689623d0f009a. 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/8762f0dc-80f1-48d4-a038-1bc8bef76b8a.json and https://artists.proofprofile.net/proofs/artist/8762f0dc-80f1-48d4-a038-1bc8bef76b8a.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 0xb3560726d3e01c7478ede15bde5ce5edb92cc4b77f8d829f229c376c31cf056d. 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/JPV752003956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5e127f9a58cf63218ee2c89c1ea22671601172c875ae58ce1741b4728d594f. 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/KRMIM1902266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37edfb67fb57fc9c13edbd8ce97ca96dc6fc43834f6bfa83e19fa7198504e1a7. 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/KRMIM1902267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5199687fa570b004da9e076c52f16c530404dad584c19024c0ca2bb4a5724645. 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/KRMIM1902268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d231d6f05940e2c3fea2d7b2533026cc81d3799d139ced693d089812686e058. 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/KRMIM1902269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd3ca38ad6a4b3f458522ad3d4ebcdf37a9df2c0fe52a684788f2228e2fbeca. 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/KRMIM1902270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d131584a36b7eb4cdfbbbb937c4016dae0a1f0a48d42238e200939bd6c39102. 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/KRMIM1902271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf29cbc410a4d3f6b4c612040210e8bc3754b30ce532f9cad7e2e2e48b8f1b97. 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/KRMIM1902272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14a04009b59d557623bdd04aee3407dfc1ab0b5db2d6690bf42c8ed8cd7a79b. 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/KRMIM1902273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63b1d26500303c40486c6a8609d415a8ec8b6b7d922f8d6292bea025c544b51. 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/KRMIM1902274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c02b80ffcc72ad15b194404081391fe8bdd4fd1b33977a9665fca45410bf3f. 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/KRMIM1902275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda263b5d61dc60cdb6b10e8e984ca6f2434ce01f9469f8c66d8224245e28d60f. 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/KRNAR2342083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa018cf7700698d55f6e360bf302d760b9ef7e7e8419d8a448e65f879e98a8281. 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/KRNAR2342084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff460439e663a67623d8ee42b414d5014d729ad61f1bbb5d33a49c8b2781853. 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/KRNAR2342085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a872224eef631ed458d825283f14088027cb403f852f11554f3fca725e6ff0a. 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/KRNAR2342086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee4e0e7b0fc220916e5e9001375b6fad1e5610cb774e0ee20c32ba1b8008063. 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/KRNAR2342087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d24e946bf83772ab38ba1710447fc0cd4bedd1f23a6959b53c478f349835f1. 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/KRMIM2336935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ae77756abbe90f67794580dcc9e48698352c92065e47c51d22b3d000500990. 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/KRMIM2217300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f654a46835f735919207568f0f3ec8b86b6d39534fe1d5475c14efca7766f3. 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/KRMIM2217301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eddbea7d81c8215d72861dbf4e30564caec97fc772cb4d668f1e803415e7e11. 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/KRMIM2011708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b78f47c50fbf6c7e1b227555d4c59345de5412a8f99dfc5008534bcf78bb850. 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/KRMIM2011709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a0b637ba1e4c48c8e332b34f4d60730dc31f6b15e04f412f3856ed00b4a2c9. 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/KRMIM2011710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ec44c544f02e77bb6857d0b28eeef41617b177b8ba1d37c80fd0a3b9fa5518. 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/KRMIM2011711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb5eda8fdf574491462a549a0d6068cf2736f7822fb39a4f53a5419a5caf4cd. 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/KRMIM2011712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d8cb495d8d6e44799dfce265347fd32ffbc9a2c63cd73547a5019ef62d4725. 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/KRMIM2426460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3560726d3e01c7478ede15bde5ce5edb92cc4b77f8d829f229c376c31cf056d. 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/JPV752003956.