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 0xfec4d695f4f59f2683810248e5bcfdc60ba496fd223d1ed2eb2c316bf4d2f4d0. 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/fc7c1f14-1dc0-456d-883c-4f43e2194579.json and https://artists.proofprofile.net/proofs/artist/fc7c1f14-1dc0-456d-883c-4f43e2194579.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 0xacd1be0f7c4c8ff53d50794d0ad4b182160c7e1af5662e57e0d997ce10c78f9e. 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/HUA253729901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a10366880870ec241c7d333aa7932cf04b2f9e64eaad0f87f094919a36c7b9. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:40:43Z), 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/HUA253729903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d9677bd38a752f164739b539cc3f6fca429f329a0e3180c684e0d84ed7e824. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/HUA253729905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23aa6f4b2bed90f2b3461aa5fd7d7f2c4e4af1bf4b8a9c85900e7d392131dbec. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:09:41Z), 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/HUA253729911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb891fcbb1ba0c30e30a4b15d2e845a559a48af6602ca70b36a5866f7b89316. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/HUA253729912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75f5f5eb8096a90ba20d144d0163b2b09841c12656a97a0e7f1af684b405f1c. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/HUA253729916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29002174c545190bc471d3817e1f82105282ab2e4352da0949dbb02a068ea303. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/HUA253729922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1eb5618a21a3920fe48144d6f11b0fc8ed5cf4e6901bc3b40ac96242c5dcb86. 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/HUA251768403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f0efbdb771237ba3904ebab5b7b36e9f04e3370b2c15602600503324615cb6. 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/HUA251768405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8163baa6f661b06bbdc0778b7921052fcaba54c61d657761d3efc4f2926adcd. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/HUA251768407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13a2178d5dbaed379bb81626e354bd69969661342d3c7637673856a0ccba498. 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/HUA251768412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d1de6c2ea3ced75a6b06770ce3303d5112fd11f507b80021e7fbd7a8d8c255. 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/HUA251768413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739849fc005bba33e6bc4e49b82f84b922895ab8faa5f7a26eb63bbeaf085b88. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:32:58Z), 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/HUA251764501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4475983439fa4365ea09eb43305171815aa12577cc72072f50a3062e4e3998. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/HUA251764510.
Stefi, jöjj ma este velem - Szédült világ - Az első szerelem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b55ff4171270f6c9da34c0c44a94ab49cf2a6c165b741c9feb84639542062bd. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:07:13Z), 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/HUA251774309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82992cdf4183d6356bb1b31e6f3ee7552220c9672474293e3207958c11bee6aa. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/HUA253740801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1d0cf5c99b38fc42573c55992e2877d6efb8873747e039f6c71f1d96b3f263. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/HUA253740802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8173cbc6f7b425d78a0ec558d896fe22034c511dcc0125e07016070a6ef55d0e. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/HUA253740811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2d19d32f56c5995ea5ce55e309ff03de13a746285d64b84b2a6fe45a5db85b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:57:28Z), 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/HUA251780205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde741f17f456b0afe2a6c62d9017b8c39e051fbe863b89e830581d1e927ecdda. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HUA253729913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968e22ab677cffa99fb0d41b6f6065b68ff7150b97aeb958b1e03166f4778c12. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HUA251778802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb755a79d25acaedbd620c1207993939bccb16923b2e9e0f240bf853b2434486. 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/HUA253736810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73abf2da0ccb920e00938f79d8eb967d59cb763a13f02d500f61b5210fc7b454. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HUA253785212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fbd5265bec5ea11ce93d2c865a36becc4297a265bb4876ce983c7cb03735b8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HUA253746310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f314bbd08178a55687bc06fb3fd0b267752174110a02fe7891f5849527394d7. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T17:40:10Z), 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/HUA253778505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a9f3272f3cadd39fb4d25cdc8befe8562e67f6799035030b340b314b31dae0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HUA253785210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e934c1112758b0ac3a520d426c37ef49709ebefaaa57cf87a853dd0010dc191. 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/HUA253772401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd47d72ccce034996911088a666aa7dd5c4d4720c9ad5ba13db3584fed18180. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HUA253727019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526117037ec36c8859d083e89f9e37aa929721a77b447eb5737bbe66b43b6d37. 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/HUA253797303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34c91fbfb6b3d1615ae9b856afbd11792b9c284cff54434d710b8f659d90d83. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HUA251785608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6939fb95498b98463c6e320a29851c5c7b768215ea8bcf190ae62a8eae06f565. 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/HUA257133401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd69b256ae015dfa774225b0f43609005835526bbbc9edb83b707d5f82a0983. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:25:41Z), 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/HUA257133402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924d02e5fc3af1d0e9d74db2f4309cd149722a3a7b51481f247f2aa331ef6fdf. 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/HUA257133403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2a80ea0398dd5a4dc91c425289b3ac11bff6891cfb48370eed42e6907efc71. 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/HUA257133404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8aadb80fe1820734681ca479b051ebd71c9432a32b080f3e089925f4a0ba16d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:53:27Z), 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/HUA257133405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914de813cae714a151f33c4a3e39930a3ac5aeda5d3c829b704fa682744f258f. 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/HUA257133406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d43b825c5dc71967e5ea081bcdf95251114fcc00fa84a5b3be8d272a18e1e9. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/HUA257133407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8091c67c0ac50486311159daa0f7885e5177be0302a87bc3f6412ce73b0e647c. 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/HUA257133408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609bb0e001faf5904ac1b2900071482c5f22101ce81adfd56d6c810c85b05a5d. 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/HUA257133409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd04bae5d252a02ab66e13b97ba38597648c66c2666c43cb515f8a79f7944688. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/HUA257133410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43cd97108671983f1d8ec8651a4652a7cd6339af2de014256ec10edac9c02ff. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/HUA257133411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027ee5b345803162d029c6eec68ee87a99adfaa62b36ea8c6a62094d69aba263. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:29:10Z), 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/HUA257133415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84302129aa05475293a2e5c00e63ca5faaa18cb65d1a5222165011f295082361. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:33:48Z), 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/HUA257133416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5f4a7da6723d1d19c80320ad85be943354b2630359ef4626ad6bf305245c48. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:39:34Z), 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/HUA257133418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288b47d5e6670f03f5569817c6deceadd0afca2f6cbc7189adc666a15af35482. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HUA257103107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410a10356d45508a0197370dbd12fdd99768eeb3d30043168e81aefbc60c42d9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HUA251764509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bf89f1d7911d196d1a14f7cf7c075b3a39b818258722c04ec8cf5389b00f1f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HUA253770904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ea51b90c45d3550923f968f75c65521025b0b73e6b2896a20033cc0dbec84c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HUA253765816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4a61bdd9d11dc6812c40d1db4a43eb637dbdfde989b41aef5d5f7053ffde71. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/HUA253740807.
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 0xadfef224237cb2b8a039691a74dd243e42a7c3aa889147f0e2938f91d734e0a7. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/HUA257107122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64981dd72dfd35be9b0195079c48d2b7d53382c0d86c547eddede144f0b68849. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/HUA253765809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8f1fb68d126c2a2c1f11955f7c406e98d98a2756112a3ecc28290b140631f3. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/HUA257107304.