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 0x8dc2787629a876df04b59d4924c4e3dd3e63cc4df1dc8be0e4d86b4b0b4aca07. 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/0f20fa66-2e74-41cf-884e-2242f84d6702.json and https://artists.proofprofile.net/proofs/artist/0f20fa66-2e74-41cf-884e-2242f84d6702.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 0x3ce84e832d819e3e4575e874d4ab49854cddfd3beeb3fe8d9ee4175226761e0d. 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/GRSTY2000149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c2b73c36b833376c64902a2346759feccbaf7a947e6413a36eccdc0c26f06b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:05:45Z), 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/GRSTY2000153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b965d2bb0fd209a2f899c03b4d1ba0be716ab662fdd60462f4b05439df3b252. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GRSTY2000154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a146105c5b7052438f5a0e8d75d547cb8843c908622e737eb4e122090818cf6. 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/QM4TW1908867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed878109fbfc54cd5b5a82c01244f9d994b4d1264c3c23721f20321f85cd5c4. 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/QM4TW1908869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad95f62d32ff9f0995b95a9406f46b74b67e3d1bc7ccecd6aac552f12635f83. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM4TW1908873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38ad2b5384a25025eadf03796f7c1bd7acb944012e2887e6ba6a428f3f57e8e. 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/QM4TW1908874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd7eb3c36a6c840a17bf9c8f0bec1b3e1966ecb6ba4947309d2940f3c339018. 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/QM4TW1908876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac420eeb781b95e68b514016413e273f71fa83d3eaa355c9d334673aa54b4f7. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QM4TW1908877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5feb6d4868d531a92bf12cf4f0d387e3f28b1a174c86e0b6c4b9d21ac6744c8. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QM4TW1908880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d3a74b19778044ad1bf75f5c611d0d09751ab12cd6fd840dcc6027700845cd. 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/QM4TW1908882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17615f9feb235f346d584ffd10f9b4a59c90425d69ff521f52b97c0c8170adce. 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/QM4TW1908883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647de916b6bcb643227779d4db801d73d7114ed4d83fedeabf64f1bd6683c00b. 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/QM4TW1908884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5462db5b4228a91bf3beecd3cc0c08c2181ff3c4a96fa1d8b0bc88c31301d83. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GRSTY2400385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1917f1bcf67c5804aefd5020edf059e74fcd69963106df6ff0e13c5b76b46369. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GRSTY2400387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbb571e1fe1d9290ca5acf45fa60690a3f2a0f4e2e9ed2345c2d6911ec7f9bc. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GRSTY2400388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc62b58b030b4b3b51c9c3cfbda2abad39f75b72704749b4f4e7a76dfbf6479. 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/GRSTY2400390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b7812e26725e3821eb2e1e672969edacc99436771611ea81850e31191ae862. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:48:34Z), 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/GRSTY2400393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d6762785bc07b9f23301061fa0cf100ba2e8d34c4d31c2375b5c88280a5d2c. 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/GRSTY2400394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6024a9ac5a21036c0532e6a969a338d6d573359c4132821b4ba4803c189445. 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/QM4TW1908965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c39f3aff1a64b726957e643b3a4a06b89a656097042cc0deaf7f544b46ff4f5. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:31:29Z), 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/QM4TW1908966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddcd29b2f244708dc45c9dbe59ce2a043d84e0735ebcfcda9e2bd3b8554389b. 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/QM4TW1908967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f61300e5ac16ba58d646a32fa4ede6d81de0d9a77480e56f5cf366076eb385. 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/QM4TW1908968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c8d7b7e99d6b2aefbb82100ff8796505b01a5b1f0cb321a032b033ca1b3206. 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/QM4TW1911350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd6a03883605107510605566d31fee7a51560d70b9136ad878cf7a22e9a867b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:50:17Z), 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/QM4TW1911351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88aaa239ea81a0a5831ed832aff1022fff80bb33e1822bb5cb8b955a62eba1f. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QM4TW1911352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c471c4920c8fc744901a2d04f97e11cd0aceb4d3c2794f77638a4e6b1880f5e. 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/QM4TW1911354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0096bb4f6a53aa9722e7197bfd01d10e3775d4b31f12770a6c6c1eea64df88e5. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QM4TW1911355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a5d82c8812055738c9b46d80246b5e41fa352527f201734da812986b4fc2e6. 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/QM4TW1911364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9fa7fceeea1279a745851c0fc0bbf379a113788da57da7eb83587d8f9d3571. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QM4TW1911365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78efeb27197a62f31ec3f9901e1434f29375c09be4149309ff17562aa0c3209. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QM4TW1911368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65d638aa8cdb04b8db7b21c7e76b9d51d59ef93868f230f4e32614cdde3f6c9. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QM4TW1911369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8ece2875a496cdf4ce284e29ff92ddf5164ffd191f1f1ed35403a73883833e. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/GRSTY2201120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b5e62c00703558aeaa090cba02a7b2cabdba1693e6085367b773718a3a00f1. 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/QMFME1987900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dd6f4f0db47dc9495ad08e5d4f099fde2c863d6d79959b81e568228e669b6c. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/GRSTY2400754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff87b84a3077a2a0b9fa60ee18a7011f445e1a66b0f4172e62873fdaf4867fd. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:41:55Z), 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/GRSTY2400756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699ac878b4f3d058e82eba6b5f13adef6dd1a5786e6b8fd23f2eaf00d86b4705. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GRSTY2302507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c07861fd08622f307a8af7a92aff70eb8d2539f6bd5a5a04f906ace0f4bdb69. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:33:30Z), 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/GRSTY2400758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd8d199db00cf80a773e656e51379b3ca99942d0dcd689cfc88f3030a8eaaae. 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/GRSTY2302508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2af63bfcbf72772d858091e0c99ab1a9f3a21318714ce92b502c818bf5afe2. 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/GRSTY2400759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597f1bc733be2284b3ab4149dc8797b16e1e8ffdd30f337bb4abdbf93c347ded. 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/GRSTY2302509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2b9d6f677da4ed46122ac20b52d247ef1a3b3472ee8f4e6072135d8d6efa05. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/GRSTY2400760.