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 0xf08fff92367206c963528dbd2d3e8240894fc3dc3d48e341cdf3e7fcdf0b600e. 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/f189497a-9c0c-4a8e-806f-8069b1329032.json and https://artists.proofprofile.net/proofs/artist/f189497a-9c0c-4a8e-806f-8069b1329032.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Definitive Tom Cavallaro: 2-Disc Anthology Set
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 0xe92a42f3ae1c0817e00329607a9d4ca1d43fc6d1432cbfd2557b52eccb83b860. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNC2108199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc456511fa4d3ca2ef50d1340ec94edb386a2b6b6176d0d658dac3a442c6c1d03. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZHNC2108205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dff9c6ca9ab85e8049c3733bfa507d0cf4a0002d6b30b8da74cb41ec6994c71. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZHN82136899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa919480764885333b82067124ca114212ea70f6f26eda0a3581c4d1823a5b210. 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/QZNWX2190694.
Still Not a Player (Tom Cavallaro Remix)
Caribbean Queen (No More Love On The Run)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4813d46a4d183f567702ba4a4c90425b2c2e18f542bdd6b27b39a7cf6a42a56. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZTAZ2269168.
Meditations Under The Cherry Blossom Tree
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb2bd396321c60f7d35ecfde2797b3aa55ccfedfd165ec0bab0b3fe93159fe9. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZPLS2327727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3261a9f53a8e1af28782f473196eb69d7529286f5e615c9f34f58b09ca6de207. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZTAT2322882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392dd3983bcefeb2765360733fc16d4df0a9e09e992f40a8a31eda3e32eaf660. 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/QZFZ42435886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0223e8754470ca846979d436fbd70e6becb5673a9dc39c77df4543fe27b497. 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/QZHNC2415519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd93f8769ad58ac7fe196ff550299c787b7c24ae836e4fe4edfca9e52cbc1cc8. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZWFX2477046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c92e04e0b43a5fb845fcfbae37ec1beab4c84e2e60827e20261ed89b9efebe. 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/QT3F22496832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924eff3dba2b26be68169c2a044780c7f5b2ca6b114775a47c38930ef0088c97. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZDA62549461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6856d083bb1d2a4efd1f7af4d803f8d7a1b4ba2db4688dd4ce7035acfce35512. 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/QZHN32540519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8263f9598d6b1e17dda5d62ed52ab56ae18ddc26279a547e5b762f2a3f84041a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZTBB2582392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4862b8bdaac188b813a94f85a48b4c3d77f31c864a05e1e3f0d06131948093ee. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT3FA2578242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91228f9cce309e02e11c9ed648a78eb373f619eecadaa1ee9934d109ccafa653. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/FRR642401381.