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 0x79909f2894b7c6e1e2a1951e3dc2fe48cb76f592d7ff64cc22f6b4b6261624cd. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e45160bd-c586-411b-b117-97c8f0a411ec.json and https://artists.proofprofile.net/proofs/artist/e45160bd-c586-411b-b117-97c8f0a411ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xc6e7204e406b86f6ff2eace2287ad20e08e8c58b6286419925d4ca72779dee34. 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/NLD682401888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65247aedca68dc7d83071958e2cda7d09ed50565260b38c8e1432dfc540cf1c. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CA5KR1962493.
FYH411 - Find Your Harmony Radio Episode #411
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3e12746929383d4bed49a5e9a4750c26eee336eb93df87bc48592fd70103e9. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBKQU2474481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93c7ab4382bf6c2947aa8cca969472c3652fc2239d5153a557fe6d9b5de258d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2474482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408b408e57b85df3393425f3a6e357639ed10143b70f5f1447893c993aa1ae6a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBKQU2474483.
Lights Out (FYH411) - Dominiq Vanquish Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2841a37c07f4b2909c7df4f64f3bd70b1dd6a3d063a47dc395f1883c522b57f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBKQU2474484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a5ed42170f963c68f78703f09a0f6899426c5b6768eb50e036eb3010fae88e. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBKQU2474485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0f0b1841ab68e3bd6c335c6a1c420f2939b26dde2c3df900cdaea0b19eb1b8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2474488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b66e93a28ce4bf11344143c6574e6a970bf0a8e1346c4be98537e20fb0b9b44. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBKQU2474491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e3638c228b2abff45f82105b58624880717d1976aea39e9c70a7b1736daa47. 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/GBKQU2474494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d95d3a09de4cd05c6369f57c4ae1393d4c1d783145b7a35c3513d69b019146. 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/GBKQU2474495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f76d52c374ee57e87e1172bb1990f4ec0bf0e71423d76c61fd412b8ac3d2ab6. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GBKQU2474496.
Wondering [Your Love Leaves Me] (FYH411)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26827ee72a02a5737a0b6f2b0df223d97eac55bee9f47c26ed1643a89d9df0cf. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2474497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e9d9b402529aef0c2ee37b246438eb9edefa99ee1c43337a0b602b2e5c276b. 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/GBKQU2474498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaaa9535246b3638b27df6ebacfd425462d61eeeb8025bcfdcb5783dcea7cb98. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GBKQU2474499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05ec9a8ce07cb80ff365fa20f47ff65c2cc44ca3aab1b378610d4a7578c0a5e. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2474500.
Love Again Like That (FYH411) - Sam Laxton Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8bfa777713379dbc8265812aa8afac5d9bc6eaded3e0984b46e3251386d99e. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2474501.
I Need Some Lasers (FYH411) [FAVORITE OF THE MOMENT]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274152e3affe97b09dd029aa6ac635875793eac9a3be830f9c66be920fa23716. 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/GBKQU2474502.
If You Only Knew (FYH411) - Bogdan Vix Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6c6a66276df83f3ee8ec3889b529fb7545819c670ca89ad7fe5e21d5533cf5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2474506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7670ceffe53cad2e82b4efab5f80c30853a75bbaa01e5bca73cd1d2064d57e56. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/GBKQU2474507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ca24456488b31f755a5460713c29c5e56b978b90dd9d7389b13b48b7036675. 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/GBKQU2474508.
Out of the Sky (FYH411) - Paul Webster Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb8ee9bf85a12fa638f3e5fd664ed17e38b6e9585ff288a0dcb24e012dfc374. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2474509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa786296a7d57a3339ac75d1dbeefe45860dfd11dbe0d388e2ce8cdebc78ff63f. 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/GBKQU2474510.
FYH387 - Find Your Harmony Radio Episode #387
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd322182d16a7086806f9f4e80a18af61e94937d470cdd9d7863ef47607f7792f. 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/GBKQU2407865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca300ba24859d333ebe8ec769547820b871dd2b2d0dbf925437812afce14d7f. 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/GBKQU2407866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d313820eb379cad504e960a9d0d2011b8ec940ab63298495ed2075f9bfb76f8. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBKQU2407867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c26b8a7fb59a67087747068b48afaafb0f4ec7f1ae597a0961f2d7ed70d1af. 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/GBKQU2407868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a7552f9d2740e4c167c0b9c76b834d9874d5c75dbc5fc9fd06792e3c7bdf9b. 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/GBKQU2407869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10c348b44a7434d5e85f9073dfbd19e0f95193794a36718f8e66fc9d47059f9. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2407872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc101e14bbbb2201765edb959c79563be6e32b53c7f1cc0c0c37df08a734a9b95. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2407873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4703b2d5f15ec39c183601c164672b6da8c0dd003461a917e8f30bbf7c1db036. 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/GBKQU2407875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3a417811a87d67dd85e626dfaf63544b17957d4515d0b9c04f00a21eacb561. 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/GBKQU2407876.
Still Believe (FYH387) [FAVORITE OF THE MOMENT]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728e72034b99035c6e5887329525e5212928d573dd73ec9078f86b0f28c39a14. 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/GBKQU2407878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e39398166028543e72a110569d9af614dd626728b678d2c1ec58b37ce9a6e2. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBKQU2407882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed36ed842df28a08b180535bf1b90a6667f6f4600df8f19644044b7405cf79f4. 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/GBKQU2407887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa28aba4c23a52e431ab38403811139c005de20ef04556e2ad8502b76f582397. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/NLC732000657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a877d18c8abfeeeaa8b554f8a1e47c3679e7aed49946e47ab67f6a215d5bcf. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLC732000658.