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 0x1c310a9401cbac369dab9d7d3a6f11bd1279407ce47fd4f7267205191839de3a. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72a93635-ede6-4215-905d-09158bc7f087.json and https://artists.proofprofile.net/proofs/artist/72a93635-ede6-4215-905d-09158bc7f087.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Contemplation, Op.30, No.1 - Mendelssohn
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 0x5a8946d75579db078076947bd34e7bd5a1757318a864fe97a68329f887d3b27e. 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/USHM80616908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243531b78a1086416210e67e45dda6e4674daa6a1aff350c85c753b104a50fe2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USHM80616913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8353a9146105f53ad77014bdce527941044aa6affe0645b940e90f8ec2e365. 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/USHM80616915.
A Medley Of Excerpts From Favorite Chopin Piano Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84897623a1b7b639c161c28f7f04706513539ef492ccc51c9ae8766a08c9fbeb. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USHM80616902.
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 0x3695cc5aabf1b897a58e174bbc814d2cb6d8161b22db8e815bed5633f02c601e. 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/USHM80616903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7257a3c578947acb677ee7f4b79ac5fac7ebfb3191d507309ed74a8142f21c. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/USHM80616904.
Adagio - Excerpt From Pathetique Sonata - Beethoven
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96a9876f69a3d1e36689ee16797f677e74eb2da4231def8aeac74c4fb39580d. 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/USHM80616905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4467524a3f22558b799cf16cc8dbfe5e20e5dbc40cdefe2edfcb41cd17cf4d. 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/USHM80616906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21338d688a92a5ef1161d58594f8cfe5dc83f8546e7cde718c257db830794ef. 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/USHM80616907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b36df03bc436b89df30c411680013126a6cd1c171629caed8a14767d14e75e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USHM80616909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef87e07278344e9711aa99b7beffbfdede8dc284ee5a916948fb2669a1022ae. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/USHM80616910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed194d0b1f36ffcc35751830dd87a8db30b60032f34936718ed85aec033db7f. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/USHM80616911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa968f1ea058f4c8043ee1608c887e8b689e82b1a8b188e3915f1e5ea19f1adc8. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USHM80616912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84148ecc32fc67536a21e2a491aec5debea48fe96c3312d3f044585812eb0746. 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/USHM80616914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a2d349aa064254bfc083976e60d010093280a7e8e36d6c77d16da6e801c1fe. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM80616916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d96bc4e4efa03a61a62d62abbf10359a58424646c59e4a8228eb15e0f4cfbfa. 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/USHM80616917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb488c79d5a5bcf9416c56b0fad322394579feb4044977e5632557c54f42c8635. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USHM80616918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc72352a52cba2d016d47c368246feb8852588c7cbe301b8be2ee61d5b26b4f. 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/USHM80616919.