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 0x7dc3a0f34387b95a8d19f764a20a8320f38f3a53bb0b1b753e92ac57dc6951d8. 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/e68bbe43-ea9a-4aae-9364-d712c2cfa8a7.json and https://artists.proofprofile.net/proofs/artist/e68bbe43-ea9a-4aae-9364-d712c2cfa8a7.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 0x91b6bf9855822691bbe6ced10c886f78322e9aca088e546d1a9cb02e5c38e4f6. 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/JPR502409052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8f908b67ce2babd8917c29b89d039a8f1ce4d949d4211075cb9cadc27332f2. 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/JPR502409053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae4d03ab5ac2268d885bfb2ee4603b4d4c126b0657373d7af5ffcea93c1fb19. 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/JPH492401041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7908db1d47832477d80e68643443275c7ba3eb5aa1f6e6216fcc735fc1ced3e4. 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/TCJPB2463138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8decb66c218e3544f2320e3f56300a8f12641904f704f2071d07540903f65cf2. 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/QZTB72481840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf49772f53b5e031701e12d332bc4853f1755cbecaad16db5bf30181df246645. 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/JPB602402600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b8f2a5e00533915f38010926a91139adb5fd10c0fcaca9d5733b4e4c0a7790. 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/TCJPB2418509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95d39561d4e36adef71ff567b4afc4136959f092bedc7768576eb2573f92c61. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCJPA2401115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf661734b32273fb3087a939859853ea1bfd2a8e7953504ce59754b2725734f7. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/JPS802351278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1daf24705e44e7b6084e0e9aa20d6eabe99ace12ee0459dec77497e836cf4d2. 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/JPS802351547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56db1179b9a03b17863bdeb3ba1d7f2671b97906c025a093883e6463a50fde7d. 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/JPS802352242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ca74c65e778e55d6ff43f9866e8c0ee59d9a0314166d83f5bc0ddf19a79b43. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/JPS802352243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6cd2beef4ca04a2e7c89c1d1baf537279d2df13d2be779c710ae08c4b1b519. 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/JPS802352244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c7e7e229d7edfac2ca8c3b17d2a29768f7740d48b3dbf8159c003164a931f9. 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/JPS802352245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1daf24705e44e7b6084e0e9aa20d6eabe99ace12ee0459dec77497e836cf4d2. 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/JPS802351547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf661734b32273fb3087a939859853ea1bfd2a8e7953504ce59754b2725734f7. 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/JPS802351278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623b6ad3b4dc427c3931c6801697019561c3d69430bfdbd4e534d9531aaa60de. 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/JPPO02302738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29961693eae9344eca1d08d866db25831d7c3ead83698eed7325f7a3d112cc7f. 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/JPH492201037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5744fd2a2c93a70da125c69a44eb1195f790d1487d7bfc0100901822433e752. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCJPP2134154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca41c82b3ef3eadbe4cae4c5f21b009a709d5fde2eafac3b9a89fb1b71ae7f56. 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/JPZ922305434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156e81ea0a31a4d3572d231db8781d6319a94b2385752d52fa8d95d7dad2dbc6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPPO02302437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623b6ad3b4dc427c3931c6801697019561c3d69430bfdbd4e534d9531aaa60de. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPPO02302738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b543f9a005c213e620c2af72269f263a2634f2f9e97dda66ddf515f629f241. 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/JPPO02302748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf701bdf72f29fc1ead3031e62ad989c0505a2278317d060a0c7710297d80384b. 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/TCJPR2207758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494bd2793eb6387c2dd977ae6a39cbf3cb0c9463c18311b2b2c111f6f2e1fd98. 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/TCJPQ2294489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13462fdd8ca01a162953b2eae43714d74d3034f393dbd21a7d379a956372b697. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCJPR2207767.