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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa641fd253e7a4c26912ad8189940fc21d0a9d4914a77dc61a86d98fd45408a06. 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/a1cf9801-2db2-4b8b-9ff8-63245380f9cd.json and https://artists.proofprofile.net/proofs/artist/a1cf9801-2db2-4b8b-9ff8-63245380f9cd.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2fca9d4f604906b569f7c46f7d9818b9c4f26feb91fcbc414edd8646a1c354. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZK6H2308703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced56c559f00a1d1d280c43807c56ac59a05b51b9e7a3685f66a6e57d979c80d. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZK6H2308704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43561f506b81557e35dc1ec9f25ec7ffa0a756355467770c6eda9f8cd385da8. 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/QZK6H2308705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc14191c0e2ad7b715766fc7d814822977e85e04e3149f3163a1137e59ae006. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/QZK6H2342493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c647c4e4a63d521ddf61a8127e81eaaf5986fb95f12204cb01fbd01095625b7. 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/QZK6H2308710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fba00775ebaf1e9b431ca0cb484c60c2ea2c53231d135b3d21b2a99573a7d2. 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/QZK6H2308712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f321c635d0df41431050854a9ef7e327b492e803ddc37fe4e245f512fe61f3. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QZK6H2344661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ad1185c713b75d3e818a4d9924c4bc88bea41a9eead81b4b3d311e9a006d45. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZK6H2357377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0370a8699ee8038d96dc5ac95bb869bdef334a24ebadd2cd34c6f3fda8b1737f. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/QZK6H2361464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed24433804afa9a02a3debdfa241c4b3632533f2205a1ac3a56e66dbfff9561f. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZK6H2361660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc4d1392b8359eaab681fc2389be4b008faf5dc3a10937df865b5ade59d3576. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZK6H2363320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68e48ff38316acc2d29bdc14838dde9bd63bff74c56482263b7d0a6253e494c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZK6H2363321.
THERE ARE NO STRINGS ON ME (Remastered V)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21d1c3a1fc49e55e94258ad4406e97c2b59e9db0989e1869c5c11cafc3124af. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZK6H2363324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4608e801c0e5881037625ee1bdbd68429308411b7f26a9595216e72dfc433b. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/QZTB42313704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285cd4b1ee0a67e8db58baf8b5bb059960903d4ef37a524f577dc542e9f0e23d. 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/QZTB42314557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bba03a18330323f59546c0baad32769b31c9b81b09f19caa54db5c655948fa4. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/QZTB42314565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f54fdec77218f4ef48779bd184f98551f0970ea16ee81827f01f21e3a30d17d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZTB42314569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8f2350c74eb94f6c4cac154b8677bf2c62496228b8b2b75fafdb87d52d2f86. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZFZ72495315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05109ab6c09c08bbb78a784484c9bf478867120698bf011f83f0428c000240fd. 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/QZMER2451800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e40ee5a1cb2c7429d134a15f14cf9b1c1fc824a899228faec274d0d7d33965. 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/QZPLR2417695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b310fbbd4a8814629367fa97b99d4d045edf258fdaa7f4d905fe5211f02bda. 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/QZRP52455387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394706c961b629fca7e4471f52b7ffc28f3d96a89f3d9e76c8a33e00383bcad5. 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/QZTAZ2437092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df488b3532bc5c76e3446eef5adcfbf8db97652512fe002ed3b663fd57cee18. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZTAZ2431268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bed757fe293550cfd6819667857e3c42920a1d1418148f17d2af85ba3096d06. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZTB52473695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa8a1f37bd267148b79ab382a591b245222f8ba427a3cdfb35d38e85559da68. 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/QZWFG2408245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ae0cd7087645fa63e226510282e206886ee05222deba46c3129e5ae8389957. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZWFG2410514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99183cc98f0b1547cd2281963dd9ed718d6ff70fb235041a08aedf969a2c22a. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QZWFG2410515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bde9bcd1fb66c80e617f02407c7613f96bbec352991dd988d8bd35c12e5f3d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZWFG2410517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b0452d7e4ced6cedc02510e3e598f37b3df9bb0321bc6c1af7db0cdf947260. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/QZWFG2410519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb346800ab13f6b7518e4438a3c15512b6742a0ff4f0760c65e046a659509d32. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/QZZ7N2490500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b538416ef8f03698860f38f2fe38744cd392c8e84c4c13f1e7881f54aa03f7. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZWFG2564905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f9eb741aee215a0f6a97730774c82b83a471da55501b416474f1f6f38d61ca. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/QZWFG2564906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3201b3656dbb1e11e38c1ca6bfbce037c94af7145082de94d3711c5b107a19af. 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/QZWFG2564923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ccfdeebf01d85db7cc0f4aae951d5a9b611b508c9e17512c2ad39c79d94dfc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZWFG2565025.