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 0xbff47acf965ae9fc8251b1043535aa8f46cd8461a643906ee08e66f8d7221e9f. 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/a7f7678f-ec01-46dc-b9ad-2fa5869916ea.json and https://artists.proofprofile.net/proofs/artist/a7f7678f-ec01-46dc-b9ad-2fa5869916ea.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 0x6307f923348491405b830f304095783c048bae827560637e48d2a46e6811e56c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6J2131657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6346b89c9a8d6a33c82d52a8962d0386db05f5d8c03c6de40012577da620145. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZDA82253039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9292d7952b0a545e42976dd86477cb521c2aff5aa917e16f2a0458ff13a976. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:27:26Z), 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/QZHN52228578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df643706067cde60f31ca2812c7ca63d9fbec571a6dec9977dbbffa310bb2ca. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAIT2459346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88e27e71e9cabdd60a5dfc627257748339781747f5e73f67e106c0cf4fa90e6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIT2420554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7493482e6df07913c9fc52301889281545c0a211aeecae5c4b5b76bedb4a2491. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCAIT2459498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f61c5497e92b4188913317f9d3301df94692c93bf947645e38d1f7ff2322ca7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAIT2409262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79321f35bde5d39960ded6838adef993c6d32038913b66ccc614bef103f4d1f5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAIT2438925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a20b438b0ca086ae87bbac3ed263856127650e5179839bbcca7925bd951ea44. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCAIZ2493053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca41a618a2f72ee6009ff0dc8c4bb61a06173b858416cc7b5d2cdf798b900715. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAJE2586777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f52e3873c6cdbe9c9b8b1c399a8a21c4af2b7d486088ca2d5274b345e70505. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/TCAJH2527135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a246758fe840d671040dc456e78c10dcd6248811de16f8c7ce394db8ec33cd. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:42:15Z), 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/TCAJH2588079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8f8d076554d798196866012c23a2b8e81fad939b36d5a280e925cbb1943455. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/TCAJH2587652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbeca441104ed0ce7b23f03ecbcf964c4e08a023228578941c9118e176a7adb. 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/TCAJH2587988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be56a3cdbf5aa3c4c34d99e55137e125204c0ac3855bd0313b0c529adcdbfac. 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/TCAJH2588197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cca7be9eb104e2ed2eef5e92cf6395242be8c75e8df5cd8ad0742f74da70ed1. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:55:14Z), 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/SE6XW2538922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31284debb097dc1a28f20153d30a0795e58b2ed003fb1507545ca05160ba82c4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE6SA2510337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767a6d60dee01b5918be8b55305b4ace628423b875dffec92a2128a164e6c59a. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:41:28Z), 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/SE6I32573384.