1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x5b35da8b360aae700f07f3feffba349d07d0b6a90da4f63e097835c32b87f6ec. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e77699ee-9615-41e3-8b2e-f3e603160da1.json and https://artists.proofprofile.net/proofs/artist/e77699ee-9615-41e3-8b2e-f3e603160da1.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 → block OTSBitcoinBlock must exist at that height 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 0x40028e1d571ccce7898f8384a842d2a18dd9b1cac39a4c11fb0e27ebac69afd9. 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/USANG2266110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026537e2dbe07e02b1d17620e7ca008af245e1050d2ab23a942d1d150a266e0e. 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/NL1LE2303217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbade8bf6d384f1537fc9ac0e7a6fe0ca31b0d795d6209f9d9e3c241a9d21e60d. 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/NL1LE2303219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc599024483dc4e02ff85dff080ffb59a7ecc78569b6966dd24858c836a1c6a4f. 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/NL1LE2303220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599306f4b5ec7afe52535d58902d6791c0407e544e94db9bf55322ddbd6e6ccc. 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/NL1LE2303221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032dd28c770dc49373e5ced00ff4b285724a6df11afad462a538b8037240f72f. 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/BCD4N2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31f3fd27ee60c0b24fc5e6c14b50a6df2ed1fa1afee9579e2c09161e5122cfa. 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/BCD4N2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2992e8f338f4ab517bd167378b9e4c30ac36472eaab23fe28538a02171a818de. 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/BCD4N2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24817af48332c4085fcebdc8221845fd589f182e413ff8e2061abc654f7fd5c5. 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/BCD4N2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68821af6c4422871a3ad741e0f69b731537cf8b21a9c68ddf942105bf2551f54. 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/BCD4N2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9a1980b3f58e87792eb50bfedf43312178ad358e56f5810cde121b9358b750. 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/QMANG2240115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e9c9353eb8ebe41e83763ff6acffe4d34fd9651649e7990f45a9e896b83743. 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/QMANG2239153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccdd551b6236214a4f543d7e4afcb81c983883af2efe5ff2ec9d6e4d0195f42. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FR59R2322229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce94ea06644006c35e66e900add85ffe6c259ace8a68de1ccea4174c41f2f75. 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/FR2X42390614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdfca870954a86f9e7ec0d560c84356a6fb771cea32bdabe2e0fd1fd26e0d1f. 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/USANG2253795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45876f04e2e54bd320107f995d6103c9eae670207e7dee5caf489115c4a3b793. 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/ZZOPM2237011.