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 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, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10200339.
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10200342.
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 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/USNO10200343.
Adams: The Death of Klinghoffer, Act II: Desert Chorus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86e0f0b0c38537dbf305cecbc84edf8bfddfc377fc32ce2037c009c3717b17e. 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/USNO10200359.
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18714401.
Century Rolls: I. First Movement - excerpt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9f54e8639882c5369f37e69b4c24c47a9d5c4f26cc279871409deb9c882ab6. 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/USNO11000134.
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO10200363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbc32503f3b814d145d3f5e51bf34e84477769a778cbee304bdc1f2e62ada24. 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/USNO11000135.
Adams: Harmonielehre, Pt. III: Meister Eckhardt and Quackie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7831f88665aa37d7832192ece81a4734a9033b0f59a05d97790bb5876c0162e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18511503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0957c355e544ac33c165b2ba812bbeb88b2936fc0834bd0c91776936082f1847. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USNO19945301.
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18714401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a893ae35a8167011dce2092f85d1f436d717ee7ea370c36f19265cc38f9de21. 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/USNO19421904.
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18714402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c94138a1fcdcd19b2d07157f02ba6742f6aaa2b826c5631f1c4611e3531155. 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/USNO19421905.
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO18817703.
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO19421906.
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 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/USNO18817704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf9dba98d5d3d13423b87b44455a07b0e59c059995e6944c112f129347433e9. 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/USNO19636005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ddbad8156431b0252aca621c8a07a25f21597e958f213b6d64e2b3e1bf3d61. 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/USNO18921802.
Harmonium/Choruses from The Death Of Klinghoffer
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USNO19945301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e795f6e063752930bc69b4ea40c4e9771f612d96a6bb87e1575b4e4fbf24493. 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/USNO10200339.