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 0x0638b1f96c859a4aa69612dc93d9d94904c87a5c3373804262cb1f670c427d48. 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/42de588f-8e58-414c-a0f6-68a9abf84288.json and https://artists.proofprofile.net/proofs/artist/42de588f-8e58-414c-a0f6-68a9abf84288.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 0x9aff567d586d6bd1b24e8f58959cbdd9449a02773684b13ebb30a8c605d01556. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAEG1945139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163f85168f7e30928d2af6ef9696ed182897939690a27be77af2bb499d8f1c9e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAEG1945144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc319a3b7db0be628173c98d446a7dbd31155ceec8c349eb093da7e81f7b0ac95. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAEG1945146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06c17584d496f9bd0b12f23eb0cf8927b1d022ccf00a76469334266fe289588. 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/TCAEG1945151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93250836aa75246860bc9f1e2e1040efa8e668671355bc1fe1e8e9939dfc3ce. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TCAEG1945154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef180b451e671653413a29e580bd1764f9d2857fd4245cc30dda4a72126b951. 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/TCAEG1945156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f917026b1644a1d37dbed69915724eeaffcfb35769892fe80d87f24b36f67e. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/TCAEG1945162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75eb39f96b84bcd73d11589f24469da96ddcfa03c9e08feef7f1c460c5076b1b. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/TCABD1227065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a05a1d3ecf672d6ec60beaccf9fe180c0d082412fe8ddbda0e4b1c0c868081. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCABD1227070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c494878b789f098aab17226135e628620f675803403e51c41716fade7fc38e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCABD1227072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7391b4014a18aa3ceed967013db0bbf90ee3bea88d77b99ed025a52418bfc63a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCABD1227073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680577350e35b3c768361b856409a815bda85d22b422f3dce75b09c64076004a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCABD1227074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ff11ebb13ae596d85786ba0956f0ddfb1d27059bd57fe228551849d9c3ed80. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCABL1387373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a076baeedbb66641abe22675e99c8137634b5dc93486a6bd013ff5fabe1d35. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:08:47Z), 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/TCABL1387376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2aed0172c57a80999db669eaa814e5e96ac6a354b095ecbecf6241a2e5f3fc6. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCABL1387380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0698a2ffcf74d31ba48b4636ea9d79d2aa77724bfecb7c9d838925c51ea18a1d. 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/TCABL1387381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf348ee1eec3a633f6ab6d46ec88d2dd0e7e34cd76022797be85987e7aaf2a0d. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/TCABL1387382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1d944c60ba79bba0f6be71b3a4bf04a04bda47b2df2ef68dce6284e8b0226a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCABL1387384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109bd86a7651e9ad5ced76acd785cec253b13f9456f8507f197ade51d303148d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/TCABL1387385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353490763b4fdac7da5527546bb962bfdad493ef18461b4ab8b8c7abf538fd64. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCABL1387386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41912c7fe4f1ef34989297592341bd73397c4f1546af22392b89df3e95e925e. 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/TCABL1387387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b241e0a551902af107444543c316b48fdd2f8238721d66353b9cd4b9b8f0b1. 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/TCABN1349854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877ae53dd2abd323c07a548f3554efa40a712592a3cf3c2e602a2583726a82ba. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCABN1349856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42253b219a3a3004c2d4662b99e582a47f5ee41bb9a6b57ef18c6375bf21c109. 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/TCABN1349858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6175004b92f0c9af3141b0b7867cb81f0f2b0da9765325d36012bc6105732b. 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/TCABN1349859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc6bb3c43d2f6d271e8dec8b00f7c7abe25210dfb3ca17b6de368205f78eb06. 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/TCABN1349860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4398d5efa2de292cdc4dc26ee90dbd5724180c456b2bfa00ade300a3c989137. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZW9L2380826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb7213103330ca19921854015cd9e23661d5f204fb3d3aaeb9bba445edf47f1. 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/QZW9L2380827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8107ec96d1fdca3d9b2578755c908e417c5c90ca7e8c6f78a0e87098d1eca96. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZW9L2380828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f58893c465d64cdabad470ba013b2df998d5c8c8757c42d9496c7f6466f24a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZW9L2380829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506961daae0a18711c16f555efb44a3cdca1efaf7284f9f98ea026f039dfb267. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:51:14Z), 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/QZW9L2380830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b78efce006fe44ed690806d62b13d1b2b5d77683d7af361c70ef53aad4b5f2. 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/QMFMF2520582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc546e298c4bb4057848887f751ff0ceed7d78904b3d146eb370288c52917d793. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QMFMF2520583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee109711ac4247e3754c7c1c208d27807cba2913c52a906ee42f161a5ad9cc5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMFMF2520584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e46d6894eea0706490e3d183c8ca4fa6762f0b182ece37ed25af42a83c1e82. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QMFMF2520585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a20168a683d792411c560a79e5c5de02ea8af3aa8a80875472134a17e0cfe5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMFMF2520586.