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 0xd19f901efd75b355e398471a0b5d6738d21efff5eb8de796dadd96ea19f2201c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a458c728-7307-4de4-864d-177c39e5b117.json and https://artists.proofprofile.net/proofs/artist/a458c728-7307-4de4-864d-177c39e5b117.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 0x6a0ceb3c73f8b5a1be661e1441b344e3287ebb7990c1bcdffaf4e813bfb4ff19. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZDA51842134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba032b835f6dca862f4659de7b7840d92990f5fa6f359044b8edd526986cbe40. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:20:00Z), 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/QZFYX1900723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c7cf9657a19f68d1da5a80652e50f47085ce22af01c6c6e47500794587e78b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:10:47Z), 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/QZFYX1900725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dd05dd3fbcbd821f1b7b5e5fc859a581fe83edf485e0b8928dc6878227ad86. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:54:39Z), 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/QZFYX1900726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dab819dd2993ab11960d21a2b7b284be538570e29df8e5a10a92a352edf0d5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZFYX1900727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f368c9b3f3fe908fbdcc7f5c50d2d66473edf04ef7b51c9a1425d7f88b1bb2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHN82288234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c646d0cc086fcc2a2cf407f8f1c060fc7ea520a94c84d355c8b76d3f5f39a3a. 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/QZK6P1906044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6516b6bbcc6787db94dd43980fe7f5a209e5d2809b882339b55635ea7d39ed8. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QZFZ22087298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8ff5f7033f92e24c1554befa467341bce6a10ed3c2b84a3acc28d7d87e277c. 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/QZDA62090651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f053147ef669473d429decb7f037c7f04322aa8d522395c2f4a0796dd5b0cbe. 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/QZES82049874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb62cf8da938e172c5ba129ba9e6f6c8825dea418f496dc7ae53f667e7d0ed3. 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/QZNWQ2077525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad23eb18b456ffba5fa565b063e17e02fa03d586ffdc81f95fe407091c44f3d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZDA62150746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb71d76cf5eabaa9ffbef4f0ca640d94ef73551845a7b730fcc2ab471e9c9fff. 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/QZES92140366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92ceed9b4c985bd1e8abd1a6242192e3c6d079a4fbda6cfd7444f9ddf969920. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHN32154540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4250cd6a27c79faad5d8285da8b09fbbf11f41f2c0252cebd75a87d7fbc1aed. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZK6N2148388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642064b3ac67f0d7deac39cb605bbcbef35ac1acaa7fb0d959aaf5e1bfbda446. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZK6M2114042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34781d07e75c7d6fec0935402f1c7fec377887047d46172f42675cb2d3d5f6fa. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:38:25Z), 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/QZK6K2163052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12904ff4a76ccef7e33d327a1b0e2f2c9d32f39542a931a1bd845a736a703e2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6G2199780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68625c63fc4c62872f5d8b032183024cb18c9c7517b5cee273b856fc21cda6b9. 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/QZMER2126285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf11d7a6aae09b709de53f28bebd51aaba8e8b1893eb4a5cb66721c85688d90. 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/QZNWW2173695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07166a90e355a11309dd3d86f484bbac427583ffa41ea3d423d643b3ce272fed. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNWZ2175602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e02458e92d9c27bdfe36516ccf0b1854c5c33c1238c1da9e469db4abd40399f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTB62265038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8038624cf933a84f8ba14c8383ccc864cbcad32a67c141bb8477a616d62f5c24. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:48:39Z), 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/QZDA42365871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74ae8e4c198f80312e41b350ebf6a3b9085e634b471bccd5a16cb8cca0606a9. 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/QZDA82349034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9846a33ecf25525300e557a31c8a4f202574e220bd8e71f1a9e4b3fa7f76b1ef. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHN32382904.