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 0xe4141528b3be5906b5106be224919fa32a7ed03e1e23d91b83c3de3b2660ea44. Chain 2 (Bitcoin): anchored in block 953896 (2026-06-16T06:05:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/110843a8-6fe4-46dc-ab41-7972612a4c33.json and https://artists.proofprofile.net/proofs/artist/110843a8-6fe4-46dc-ab41-7972612a4c33.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 0x28bba99fa75d628772d8022b0c5255fb3d69a6e095520c86c5f269f214f77f87. 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/USHM92175986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5e3fcda5ff086ccf695093d29ccba527f2c5b642446fb43df5f8517793725f. 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/SEYOK1769115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bc1f31a36e9b50554fda357a9b49eff7f53e125213cdad2638dfbf45563aec. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEYOK1769116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecaefc49c75adc634e5c2f4692bac947e189176f2be5bb5e30ed6cdb4feec9b9. 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/SEYOK1769117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f05b35a9f3f3bd1d902cd212e237d5cbe3d2610a0314c555f600c41f76b596. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/SEYOK1769118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce020676955723f72b9907e963821bc92fda0d4dd8dd555f399815ff813a851. 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/SEYOK1769119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993d3c7a1349d8953a1f0ebe05e54eae31e797040a13efdab6c5c8772df556e5. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/SEYOK1769120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf694cc5407ae05b1fa46fd18f16b66b75023e6cbb20a46a999c0b898267c716b. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/SEYOK1769121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664df9c8180f4108abab7b3b635e24b139ecfb92450469330d36628a94dba883. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/SEYOK1769122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3457440f87e533c9374fcc1c1d31de7a8a071d2ef956915171fb5f5c383d6224. 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/SEYOK1769123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4776a5d860f933a48fa77b798a3805d4bf2eeb6d15f4ee8fa63f13629b99b5. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/SEYOK1769124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf56e1cb1d27fe7172c26dd9431b2ce39b94fd3c8cc9e173fccea7161d4cd80. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/SEYOK1769125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b70bbc0efa4300f7cf918fb28e7d7963148fdeb31a72e2db9df431d33380571. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/SEYOK1769126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e943373d0ceaba9dc58ab31235dc01001cb4c3d584ac48bdef2ec96ede41a1. 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/SEYOK1769127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb8ec242fab6997fba4182e7d26c1e50a95a14b8de06e8de69720893fc9e5da. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEYOK1769128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6ac1eab2bc2bcd1952a5ffdf8033ac0cb007d7a736de01ef2a8843f0a7babe. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SEYOK1769129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e31dd6f71dbad015f000c9985e8f8f81cafb7ee80240a8445b3fa5358e1e172. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SEYOK1769130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526ab22e5a456b496aca2b05c90dca9a18b1bb0192a3a36748061ffc1b75918c. 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/SEYOK1769131.
Avísale a la Vecina Quien Es el Más Recio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab170aef7a23493feef4c25f7815362e261da62bbe3a3acba6a5f663fd53cc5a. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/SEYOK1769132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c60e98dba36171452b6cd69408e1e77c6a62571d35cadb662ef3828247b07a8. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/SEYOK1804138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44ee177ff6a585d700835acdb1a813f17ba7a04d584e6499df13df9b291580a. 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/SEYOK1804139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71914a2facb1e9d34717660fb52503e81fd391007aac2dfdbf2b19ba9d2ccca1. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/SEYOK1804140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71af7c263d5d6ebfcc54d394ad11e14f2f1dccc0735c8da9ebeecf2580823be. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/SEYOK1804141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d23f9c35a049a4eebbb785ae408b22671a2dbcda237218f4c6af4c9151443f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/SEYOK1804142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc018453c5b811a58073455e9c339e0622fb7f1304ef73fc73fd98fa28869e134. 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/SEYOK1804143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd454e8589b97849162fb303a75ac18d81967a010d21642417d6cd797d73756c0. 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/SEYOK1804144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414c6ca8d2104b4a6b2a00fee3fa47ae78700fb03b68828e4ce456bc53e90edf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEYOK1804145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01105ccc3e339a7f602bb16b639045de0b3831adbaf413eb2489b44828c1c540. 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/SEYOK1804146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee202adbe6e94fe9b902843fa2d2f003160e2abf7a503d9049d339c33b6237b4. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/SEYOK1804147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0430a8dc63277a6ccf6c35f72f11bd9ca657fb8d0e35d23f9e26eed3052b33f3. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/SEYOK1804148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef3720e5f57a810961d02cdfd9dbd80b5fd5a0a42a7f638237882fee1693c37. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/SEYOK1804149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdc3d7d49702d95727c006bf1e5f11a823d9ee2c0f102e19ba0dba15ff8fb42. 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/SEYOK1804150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb3032015d6551bd9f3d88caf119d05aebd3bd606373d7dd98268e41f3ba192. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SEYOK1804151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f48cda9bc8abaa7b89d2aed6c2352df03a04e9b9e055796231eaf2b8f52375. 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/SEYOK1804152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecd1bc116dbb34dd7b3015131ac057c0811f349012a0c65c30a648ed3e80187. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/SEYOK1804153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9afac8898e8b03671a6420dd8d88c03576ef05c4f33032356319486e100d38c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SEYOK1804154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaecde9047d997640da331a88ee00ddc7b2373191d0af61a36346a7e255fa560. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SEYOK1804155.
Así Es Como Comienza (Escape al Purgatorio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbd2689eaedbc3c8c05cb0afa386388365fd6589b263daa7311caf15760d6f8. 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/QZNJW2376438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c26cd3579f79ffc9a3d2833c9da15b43c1e8df423088ff8fd99f613f3216605. 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/QZNJW2376439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377529b21dab6436ed531ee75b3ce3788b845e0c211eabb319b98a326ba6a8bc. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/QZW9M2205477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad62fdc12fee96c5d9ac9692f436dea69aa31d993c09f643a89de6acd7367456. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZNJW2376441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57053b09af6a5d92d9ec328966fc15ca81abc8e648c83ec83f1771f1c72a10fe. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USX9P2050728.