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 0x4e1f5e55ffc48a8f5800f169b6e12ef19c307652f05b77f7c88c4ece767c9e2c. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1238769f-0c1c-43fb-a1ab-9489d1297c04.json and https://artists.proofprofile.net/proofs/artist/1238769f-0c1c-43fb-a1ab-9489d1297c04.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Adams: The Death of Klinghoffer, Prologue: Chorus of Exiled Palestinians
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 0x2e795f6e063752930bc69b4ea40c4e9771f612d96a6bb87e1575b4e4fbf24493. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10200339 — a six-check JSON result.
Adams: The Death of Klinghoffer, Prologue: Chorus of Exiled Jews
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e83bbf6604a4e6645af0ede26303025ce4dbdfc6d0de8c016629f911edb1077. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10200340 — a six-check JSON result.
Adams: The Death of Klinghoffer, Act I: "It was just after 1:15"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bef953d97ac1c190b1c9aeda6f9c0e58cfc01d180b99616ae2fd783eda1fcf. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10200341 — a six-check JSON result.
Adams: The Death of Klinghoffer, Act I: "My Grandson Didi, who was two"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48b702d75de30122a2f43b2769118944b2a772d25ea38f9f5a758d7da69f955. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10200342 — a six-check JSON result.
Adams: The Death of Klinghoffer, Act I: "Give these orders"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1626932d093d3239e90be8140e27b4dfd22efc4c6fd8f9da510b6e65ee4a100. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10200343 — a six-check JSON result.
Adams: The Death of Klinghoffer, Act I: "So I said to my grandson"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215cec32ba82446e396fc9eed3d82a1dca54145ce99f98c26bf26b1563a8b81f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10200344 — a six-check JSON result.
Adams: The Death of Klinghoffer, Act I: "We are sorry for you"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76126efdf02ca7f97c89ca23afb1751b074f4912509f5fe6ef8fb272a4cfd4a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10200345 — a six-check JSON result.
Adams: The Death of Klinghoffer, Act II: Desert Chorus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86e0f0b0c38537dbf305cecbc84edf8bfddfc377fc32ce2037c009c3717b17e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10200359 — a six-check JSON result.
Adams: The Death of Klinghoffer, Act I: Ocean Chorus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba4fae7c52286750e30d71fea0286cea2faf5b0d1990e44d35aba5be849adb0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10200346 — a six-check JSON result.
Adams: The Death of Klinghoffer, Act I: Night Chorus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6a2e79515acaf723685784200910f5337de7c65d22c1a041e066f6399bbc70. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10200352 — a six-check JSON result.
Adams: The Chairman Dances (Foxtrot for Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5561fea3476ee87bb6dd58e07e12dce2992c75d63c5ea4ffe8ce1886e7d71a5d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18714401 — a six-check JSON result.
Century Rolls: I. First Movement - excerpt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9f54e8639882c5369f37e69b4c24c47a9d5c4f26cc279871409deb9c882ab6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO11000134 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32473ced6f1ad1eec445df1340766671e488b82b903ffbda5406d07afe64e7a4. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO19945304 — a six-check JSON result.
Adams: Shaker Loops: III. Loops and Verses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3859d923ba5fe70f43d8bee769421c06f6017ec315626de67274522ebd377024. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO19636006 — a six-check JSON result.
Adams: Shaker Loops: IV. A Final Shaking
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe863e1b1e44fe6252238a60e07f279b1be031cc2b958bdd25d03a909cb8f972a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO19636007 — a six-check JSON result.
Adams: The Death of Klinghoffer, Act II: Klinghoffer's Death
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02129e9ae4a37517e04dd40b93ef4198e963c48b47008590557ccf320231f9a9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10200363 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbc32503f3b814d145d3f5e51bf34e84477769a778cbee304bdc1f2e62ada24. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO11000135 — a six-check JSON result.
Adams: Harmonielehre, Pt. II: the Anfortas Wound
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808996746703f5c3d1102eba398c7637c97babc59d20e2045e1cfb5a9735f9d3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18511502 — a six-check JSON result.
Adams: Harmonielehre, Pt. III: Meister Eckhardt and Quackie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7831f88665aa37d7832192ece81a4734a9033b0f59a05d97790bb5876c0162e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18511503 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0957c355e544ac33c165b2ba812bbeb88b2936fc0834bd0c91776936082f1847. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO19945301 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5561fea3476ee87bb6dd58e07e12dce2992c75d63c5ea4ffe8ce1886e7d71a5d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18714401 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d486885dab082e16ff183af214f86e087d09740660f9ad020b178f6f05edf46. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO19228101 — a six-check JSON result.
Adams: Harmonium: II. Because I Could Not Stop for Death
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7571867c48d85af16a302889734ac9d536c65b79b595c4bb0103a894868ca73. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO19945302 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a893ae35a8167011dce2092f85d1f436d717ee7ea370c36f19265cc38f9de21. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO19421904 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57921b839709c11c9f78e4f759aa331551968015a25920f60084f18fb2471ace. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18714402 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805c03dc35acaa8a56e8a76649c5e49a6ebbe061bf455222add189b9aeef9702. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO19945306 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c94138a1fcdcd19b2d07157f02ba6742f6aaa2b826c5631f1c4611e3531155. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO19421905 — a six-check JSON result.
Adams: Nixon in China, Act I, Scene 1: "The People Are the Heroes Now"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c2a0e9cc020ed96c22a53fd2dd31d14c2c5c2018596f38bb4c1d3c1ae3fee9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18817703 — a six-check JSON result.
Adams: Shaker Loops: I. Shaking and Trembling
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f26a1d2863736c34c5c718a040214872958cd6d4e9dc66c577edd4013ea7c29. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO19636004 — a six-check JSON result.
Adams: Grand Pianola Music: On the Dominant Divide
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08823952b557a449a4b4e2a58e188991efe320f08a81eff581249fe82363535f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO19421906 — a six-check JSON result.
Adams: Nixon in China, Act I, Scene 1: Landing of the Spirit of '76
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9bce7e70b367df973bacd2e120c4aa63f4b83ecf94a975fa6f59ccf2a460fa. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18817704 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf9dba98d5d3d13423b87b44455a07b0e59c059995e6944c112f129347433e9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO19636005 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ddbad8156431b0252aca621c8a07a25f21597e958f213b6d64e2b3e1bf3d61. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18921802 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe863e1b1e44fe6252238a60e07f279b1be031cc2b958bdd25d03a909cb8f972a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO19636007 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c762afe582f8719fef8be5e305c30d25a0a88903c0e40679a470c286fc25b0. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO19124909 — a six-check JSON result.
Harmonium/Choruses from The Death Of Klinghoffer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7571867c48d85af16a302889734ac9d536c65b79b595c4bb0103a894868ca73. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO19945302 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805c03dc35acaa8a56e8a76649c5e49a6ebbe061bf455222add189b9aeef9702. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO19945306 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e795f6e063752930bc69b4ea40c4e9771f612d96a6bb87e1575b4e4fbf24493. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10200339 — a six-check JSON result.