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 0x4a28f2660065fbd1cd7107fa472aefe52e334bc9b1d36995b1afbeb90bb7223a. 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/f801080d-ed95-49ab-bc7f-592f808da16d.json and https://artists.proofprofile.net/proofs/artist/f801080d-ed95-49ab-bc7f-592f808da16d.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 0x25e5515970d4db98ce5f8979ad1e616a464efd289ad41db7d35f7829e66ee5eb. 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/USUPK2421701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490f18f43a8eae5c0fed64d9aec232319a1b6f09a8619649d9e1b95ebbe2ec00. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUPK2321701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f9f2836f07c4def8ca1f9869adbda8a1c0fb7cba86b4d455d39b946a304da2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZEQU2268316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6019643d064fca6fee6bdab7f5ad957e078fb99706dc354f69b221318bf139ae. 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/USUPK1321701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51461de1afc6eed44b793481661c007d40944823649fef66c2b64040a92356d7. 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/USUPK1321702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04de0095c75f5522bf08fbb33ef1f9cb2fa8d4e0c94997c07efa0a44f0e79d4b. 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/USUPK1321703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17264fbf8849f3dba65e42e1ad219858bd16104cec8388c7c7caa606fc8b01f2. 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/USUPK1321704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ea0bf439424cff3d8d5924804323ec493c09fcfedef70516b92c9214d25708. 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/USUPK1321705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36dae78b032b7095afdebe46b677784e84726aa17f7b79b4a103b30f11e7d52. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUPK1321706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829e2b6e12d13e2a658b88a072a59848550af8b5c93ce44d6458c129069f0bf4. 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/USUPK1321708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1945a61e9ed1a71f8120b0c2fad7154e7190ccf957e057bdbfdef9625a3d4d. 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/USUPK1321709.
Life Is Good (feat. Bubba Sparxxx & Nappy Roots)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086da795d9f9f7a0336d8331ce21a1b91288161e3ff9e4455ac9929f1c5fac83. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUPK1321710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7693dcb24f8dc6975a5e12f82b7dfe6bfb42b0896eecce2437244571dc19bc28. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUPK1321711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e22730935f5cb875f35f31b5ba4f2d166b3b4185f829df42342bf5e798c7e0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUPK1321712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa53d4c6b2d056a4477f545a60588128671a2bf85336f0ee260b154a1fa3bcf5. 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/USUPK1321713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7383f8dab87c468fe0cd116c8b72a4c1b0e1dfd4388bda0c9bd4ec7b3c40a9f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUPK1321714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa55920020b70ba8d768022fdf80fcde1cf71ca3e2c0400ede5c52733a61710. 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/USUPK1321715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f41b69567729e33d27f254d5f6c7d0fdb8074e89c18558faa9e651533c58c7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USX9P2392008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90153a197171a144ef018d687e44e2e216838db4e3bc6f2233abee91c677d244. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USX9P2392009.
Stranger Things (feat. Kung Fu Vampire & Demi Demaree)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7bf1801459f6dd431ffc5c8f6849e1d3351af9b193709d1ff61da5d6f1f1db. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USX9P2392010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66bad0e3ca80e2902b7786b1559b82b7752669e23bd34d5028e0bab7ff447e1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USX9P2392011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1276c9355f7c9250a1f60f9819c3b78dfd126c3e6f69d521296247103109be9b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USX9P2392012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd961ca662e2b6720b53259f782d130300d705a11aa9054d12250dec94b5be25. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USX9P2392013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c29a4d8d6be17619cf687535bfdc53fe58341b691c7cf401db31ef74e40c0b. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USX9P2392015.
The Monarchy (feat. The Underground Avengers & ¡MAYDAY!)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e8b75088b21fd29d7925d2d869f2b837248467ea7ad6472e30cf5ce285b47d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USX9P2392016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9547dad5befab36e9a224b979e13e69ce076bbad8160dc4ba97e261398c78d90. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USX9P2392017.
Afraid of Ghosts (feat. Blaze Ya Dead Homie, The R.O.C., Boondox & Jamie Madrox)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc042a8f1cb556daafebedc4e1ea0d851730c9688a208c9a161f875b47b801933. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCGH2204517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cb227dcf799edde1c57857f7a882febe8aeb3726f1d4c8baa496b1cd0776ca. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCGH2204518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979082e84566ad5673d6b50e34fd5d92e4d3154f2f6e5b5c5c2f2488cd6ff7de. 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/USCGH2204519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bbc062c70ad1f7ff6c37292b18c70406741695f29a0c9fae09097daa2386bf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCGH2204522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2826a797eb2c1df8834c857fcbc1e1bf6050d8037ce03752efa63a64847e8e32. 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/QZTBF2310336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728cd30c0980ba93dcbc95e5b6e4f818f295a2a8fa5100e06c89cc13b4a9e652. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:27:54Z), 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/QZTBF2310338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05284ac54d2557b7bd72d648f6956aca072e234c8e02b7fc30444e84c0a096da. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:55:50Z), 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/QZHZ62263070.