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 0xf122fd40180526cbfebae730eaa5b3e37f585f7d45468c638940674de2389176. 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/06cd6db6-6075-4189-9341-a66aed469dd4.json and https://artists.proofprofile.net/proofs/artist/06cd6db6-6075-4189-9341-a66aed469dd4.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 0x38645b232285cf3584a3cfee628b75409429b6ad6ebeaf95f69d1484b513769e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:44:56Z), 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/AUMEV2559345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabac6a206f1d9dec2c69483db383aea6c936190b590b59c1863a5b4b9fe3f76. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AUMEV2579102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcea14e82ec9435a1354554bd5b50fef569ebdc2109b6490eccbc1d3dcab2e94. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/AUMEV2579106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc174ceebcad02369b185ac1075170e10ee2f8209c460545e4c65fbb519f3cc46. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/AUMEV2579112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60df6a492080550dcccaa2cd290986268fac7f1170540ced484e13f6b2dd5415. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/AUMEV2579114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b64a30861918ba9a66049f5408a9b239361b91070b4868cc2bc7d92b20eb96a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/AUMEV2579118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafd187232700424a3568d7ec387897d4de740ca25932e8eb7f8d62affa8ca53. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUMEV2579119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3b6506813c3f214c61e5ee77e20804b6619b8fb41195eff718065914a21978. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AUMEV2579120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1535fcaf875b5261fd773d4c8426cddd33b72c323ecc0c8eef4e5e827c90d3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:17:15Z), 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/AUMEV2579121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a3344172a7af89079cc01638c1a9f8391d98da30d7e2f671335e6f7ff76ce8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:55:27Z), 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/AUMEV2576954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58291889a28982ae77f94647dc3684f709a72411c3583f67cebe8b4d0ab02683. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AUMEV2576955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4982e8bd9e5cf86cd753c7335ca6309954e647c44973c7630037faefa7dce74. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:06:33Z), 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/AUMEV2576956.