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 0x8404ce8006d6cfa6a7f194f2d8d45a2ce1f38539648d356bb5116a10f803c71b. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d85c258-20be-4107-951b-8daa5e1536c0.json and https://artists.proofprofile.net/proofs/artist/3d85c258-20be-4107-951b-8daa5e1536c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Judas Maccabaeus, HWV 63, Act II: Aria "Sound an alarm!" - Chorus "We hear the pleasing, dreadful call"
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 0x89e8dfad88702af2d9c5b6530a6538cb646832a544a34e39648d3bc1c8d4744a. 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/USHM19207804.
Judas Maccabaeus, HWV 63, Act I: Recit "Not vain is all this storm of grief"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c3c9b39ce1553970905aca8eb2091ec7788216fb8f8cab9a6d72f73e83d113. 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/USHM19207706.
Judas Maccabaeus, HWV 63, Act I: Aria "Pious orgies, pious airs"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffba3bca76a2bddfd1e47f8df813ecac6f72176c8d5151de714ab9417e9d6aec. 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/USHM19207707.
Judas Maccabaeus, HWV 63, Act I: Chorus "O Father, whose almighty pow'r"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37058ee2d4fa0b37415296540970072b700cc8649d9bce84c37359110ddc9732. 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/USHM19207708.
Judas Maccabaeus, HWV 63, Act 1: Recit "I feel the deity within"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cb6c07eac98053fbd9b6bd1b8c6274d201e8b617efaf5af0d4e11d3a6552e8. 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/USHM19207709.
Judas Maccabaeus, HWV 63, Act III: Recit "See, see yon flames"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0a99562c0313c2cfe6ab907347f1dcae50b946a6128d3d2ff603ff0d74ac08. 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/USHM19207810.
Judas Maccabaeus, HWV 63, Act III: Aria "So shall the lute and harp awake"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6b91f88cf9294edefc7370d5dbaf8f6222f1509c8c97100fdbd3b3f7b65adc. 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/USHM19207812.
Judas Maccabaeus, HWV 63, Act 3: Chorus of Youths: See, the conqu'ring hero comes - Duet: See the godlike youth - Chorus: See, the conqu'ring hero comes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2bc825a59e106547ebef9474c9d3bf69cdb0d47c3773489028d2fa606d07f2. 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/USHM19207814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6367866c2397ac7ab61ce5920dd5fa7ca82433cb87a72e4a58dc344c2ffb1d75. 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/USHM19207815.
Judas Maccabaeus, HWV 63, Act I: Aria "'Tis liberty, dear liberty alone"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6714e24d6390b44e6c6979ed49e7f8c56f0ee4f6eedc70c5ce1db0e61334825f. 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/USHM19207717.
Judas Maccabaeus, HWV 63, Act III: Duet "O lovely peace"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bc56dbc403049304f6811d4cdece17b5676a8a2515691c1da960c89a8a7e9d. 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/USHM19207822.
Judas Maccabaeus, HWV 63, Act I: Aria "No, no unhallow'd desire"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab7731da07c4c984a1930c52da47866e31a3e525504521de3da5d9869ac380e. 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/USHM19207723.
Judas Maccabaeus, HWV 63, Act II: Recit "Victorious hero!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7082a65c38b314396604a3f8d3e7c76c10ea76e2409dad7de722064c40e1f91f. 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/USHM19207726.
Judas Maccabaeus, HWV 63, Act II: Aria "So rapid thy course is"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f27a5ca471dee2126fe9f4a1e7178d5b3d65436ba6c0339600a2cf8481e389a. 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/USHM19207727.
Judas Maccabaeus, HWV 63, Act II: Recit "O Judas, O my brethren!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a7173600564efcdb6e567cbcdc3022e469f94a508581185e1163c9c3b30cff. 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/USHM19207733.
Judas Maccabaeus, HWV 63, Act I: Chorus "Mourn, ye afflicted children"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18742d9840940481d0dbefb1070669a961b88b65e37318931f206048c720baa. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USHM19207702.
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
Judas Maccabaeus, HWV 63, Act I: Chorus "For Sion lamentation make"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50e467be5a89046f7c4b83d95df098e1baedd293ff683fd6deea7218d9df914. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM19207705.
Judas Maccabaeus, HWV 63, Act II: Duet & Chorus "Oh! never, never bow we down"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97229f04adf61dafd22be8e36beff77d86a30a95e17d53775864f506d8f85ac5. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/USHM19207808.
Judas Maccabaeus, HWV 63, Act I: Aria "Arm, arm, ye brave!" - Chorus "We come, we come"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3f13576ba37b6551a1a67f02299bc5f5dfd31bcb573d8d1cfbc2cd8816341a. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/USHM19207710.
Judas Maccabaeus, HWV 63, Act III: Duet & Chorus "Sing unto God"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd82d1555905eb2efeffb222d96e4edbb0b3419d459a16865216a8715ed26e3. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USHM19207816.
Judas Maccabaeus, HWV 63, Act I: Chorus "Lead on, lead on!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa839063efe8bd6428655fbd4eb09a0ae3c4063b2a4126e7617fd06b194c63afe. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USHM19207719.
Judas Maccabaeus, HWV 63, Act I: Semi-chorus "Disdainful of danger"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30117e6145f63dde94d6db1b99b12a6a8d314f37c0e1db4392470a29af29925c. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USHM19207721.
Judas Maccabaeus, HWV 63, Act I: Chorus "Hear us, O Lord"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd714ffd5a662c9ec304b31cc9c329109ce29ea0327ba88629467e33d85f7be. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM19207724.
Judas Maccabaeus, HWV 63, Act II: Chorus "Fall'n is the foe"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8178072adaf6c6c78b9e36c90e5d8e9774b9cfc85462d3e33119e87d4ba8a4b1. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USHM19207725.
Judas Maccabaeus, HWV 63, Act II: Duet & Chorus "Hail, hail, Judea"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d73d8534e75698dfd46a5b8aaf6715484b4539b23039460060704807e959ea6. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USHM19207730.
Judas Maccabaeus, HWV 63, Act II: Aria & Chorus "Ah! wretched Israel!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d994940d0571ed57c41fe395ed2d599a67f1e6b079a986189d98da39c7315a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USHM19207734.