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 0xf4bbf952e23740f1102d3a37b00fbce1db7a3cb5000b3ab8b98fee637e0c7bfb. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0587cc9c-cdb8-4b73-a247-1addbf2d669b.json and https://artists.proofprofile.net/proofs/artist/0587cc9c-cdb8-4b73-a247-1addbf2d669b.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7523b9e27ec50420c6934da51af31c4d55cee37c843ec4db983ecdc52d28d532. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZTAS2505675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556d35127801768894e2f60ce87ab836b1f8db7cf0c0f4661cb6d4093465f540. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:45Z), 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/QZTAS2503648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7523b9e27ec50420c6934da51af31c4d55cee37c843ec4db983ecdc52d28d532. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZTAS2505675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f20c4d855dcb232e7bab5f929f3ed664da3adbfa71bb103c43f39f5595f5fb3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZPLS2443402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556d35127801768894e2f60ce87ab836b1f8db7cf0c0f4661cb6d4093465f540. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:33Z), 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/QZTAS2503648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958545caaace707cb5737fa39b7187a3a856e1edf79ba1ebcc9bd9aa4d618901. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZPLS2443405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e7b98df8a6da5c958790885ad6c4dbae58856091199afd8b8a3365d00082e5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTAZ2578582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a280ca4a851d090cfa03de8cedaffe0e789be9e7727da5e2777c9ba5e7515e. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:53:20Z), 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/QZHNA2291359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92514af664e22e93f9f8fd18830b63a68f0678e4e95b5bd9f700bddb99d472d4. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZTB42528340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf633f9951e88692643fba6088839eff4897fcc5f68e17b852b6394981ac513ba. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZNWQ2250488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0571138a7411fe95459d1f1dec6cebe8bce21e7768341a5212bed9432c937322. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ7K2499949.
Pain In My Soul - Social Media Highlight
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2de72412a010fa5900bf961542f2b8b70eefda16672d137ce29660d098bbb35. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTAY2547311.
Memphis Tennessee - Social Media Highlight
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc546cf8f50efbc797fda2533be3055113f8d89454ceaf83dfbfae18282258c66. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:50:32Z), 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/QZWFL2363490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9baff67226ef018a7538bba3035393e65ac94c3f70c3b158128cd56f69241a25. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZRP52593055.
Sticks and Stones - Social Media Highlight
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bb4f2f94dc11fc931f1ccfa108acc91f46232f343bad911a61942145551378. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:43Z), 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/QZTAU2596319.
Ain't Duccin Nothing - Social Media Highlight
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bba1ebf07c691daddee0b3f5f0b76f27365c54d85dac4fd5c9f98104930e9b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:50:28Z), 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/QZTAY2547407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e126abaefc13f7f697ef17b5c54ecae744aafee7960289c2e0f45e06d31366. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZTAU2593088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025957628fdfcf41a9cd1e8633beeeece9d9fa8ecd0f1bdf2a8e83a495603bae. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:38:41Z), 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/QZHN92495040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fca5eda57cb686cb60695a522491b15aa751ac9fa5d90406d0ac59e53328367. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZTB32589695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7c818f90a4390c375fa5323a680bfd4931fce4638b7e0d51a489377babbade. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTB42580182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e4a9f5889b135525d191e35c7fbe88c0df125acdb6a3a75e2c9b012c6f9b8e. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZTBF2548166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b1eee251d1b691b80cf1cd7a70ae0b1192af643e3e7738bf206f108a257c4d. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:39:18Z), 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/QZWFL2523037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2c8c79bb7d3f88254041b8ad87db995e05dbb2448c8e7375cbbd7441d2fcfb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFT2558317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af2eba2955404c4bfc84b3b9b7d584b68924ecafb32f821e2a18f693226e5ed. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QT3F82506702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8082f1055c6c1a09084a695068c222e9a3c35a158c25574013e290dccc4838d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT3F92529272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2ed5dce6d5c1ea07328ef891b5a79381efff1adda3c57609f79022a64ba896. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QT6E82530738.