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 0x5712fecc65b05ed92418051a890d89bead9f84589ef3bd568be960fc4acc8f3c. 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/9b42ffd6-ab47-4c15-99a6-832b7e426825.json and https://artists.proofprofile.net/proofs/artist/9b42ffd6-ab47-4c15-99a6-832b7e426825.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 0x9afb519b316d658a35027b69cb8281e00781040fe82322786fba6cf82cb03f96. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/EGA010537993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187c5a2155d50da9a716bd65d99cf2f11f96ae86b5430488a8942fd222459139. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/EGA010540889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a810fee512a30baaac3a08d2690e39794556c54f84f5f570c862b46ae8e37d. 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/EGA010541672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ece52f8aa647565a37e4f0c8a52223d82f574636fe09af76eacfd802542f07c. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/EGA010541673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d063f0455703102e9890242df34f5c88d729226e084fa26aa37d01cf185fe5. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:20:25Z), 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/EGA010541675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2a8a6f9a3caec1fe380713b3d5cc23d1a216037db44d17bc30bd3de933b89e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/EGA010541677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d1192c318728d23d674c8f5762feb0819232185699dcc720de06952016a8c4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/EGA010541492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd77db34ba559212daf24201c0437822e54f2a554f6a962fdabc2dac962c17f. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/EGA010541494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15ffb345108e162f6d11279aac1f01cedb64e24e427e5f11e71b5a2c13e5cf3. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/EGA010541496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7299f5c3942a67763451022b9f8b36f6b0918e798dc64d53f20d5e3f64814992. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/EGA010533750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327cc57cbf3a10768c8ab7ab028ee42527ad1640703e86747fe5975f1884930b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/EGA010541620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc96a3a84ab7d923f08ce347a01d5375419c5cc0f2b9c23e0a3d6f90aefd98a. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:30:25Z), 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/EGA010541621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93569b0a85fee2b3c0cf7fe04d75912969348b8745c5f4692ed2e024149da811. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:51:58Z), 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/EGA010541622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de3aa5f73d5b52896938c4939a88af43e65ea1dd8a4176fc61922c8b43ed429. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/EGA010533749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe99eb426f19c7898a5217d48d02b3327ab269e9ae2f1bbadffcdf7e569f6af. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:20:20Z), 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/EGA010541495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b59c7525265a5bb7df3670061db7f8d16e4f3cf5621bfc6ed5917f2cee86468. 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/EGA010541497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb581c793bda37003e2f01e47f3e0139f4acaa715048543bdde7bfeddd19cab0e. 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/EGA010541500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13062b4c088e4b1e27d59cc5849b431a22f3d2ea53707ab6b101c00f868cd764. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/EGA010533751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbe423706cd3c30a7b8cb65fd9ae062f76a26252357a11dd0814aa8c10b6ab2. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/EGA010541608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddf85ecfbba9d22eb555c41e4406ce350c69eb2cfe9ef71c2705f792bbe6138. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/EGA010533752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aaed967a073e53c0e458ea840b70c4234ee78b028971f6317687a95818ca09e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:40:21Z), 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/EGA010533436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8430e1a6c44d2e485497fa404c979e95b203d4f952c7c19dbcfa1dbadf0404c7. 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/EGA010533437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf792898b7d28d1838fa58eaa4b88f021aa866de04a149eac48ccfba8df6824d7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/EGA010533439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bff294b183b963d3b2dda0fb9ab3317869c6ba247b43a440d11811871ed7ac0. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/EGA010541483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8787c6387a0e23f46a60a893a5c918a385bb64627d809ac870347e526844f4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/EGA010541526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bc564f8d0b6175d41595b2d01ff7bbc03d4e000e18b933dcd70d48994d2261. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:03:32Z), 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/EGA010541530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23dceb34b1bd7a36644c7c87e3d75dad9677a03fcb14cd74755a835707a7e9b8. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/EGA010533754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5446c2cc0d343f579ce1e454cd8846daf40e5d454012636614b2e8a4ba478768. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/EGA010533583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a1d4fafdc317826bebc8afa0c802c1357b39553e1432fa2c372e08bee2a23c. 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/EGA010541419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bb2f1272669cec328d6d5893ac98c42a526ad5d466210792a8b5ef4994bcf0. 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/EGA010533747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec85de801836ccb85baefc4588f87b2f585cf7051205d205a3fbe32412b85eb5. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/EGA010541424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b1c92842135ad5ff73fc02c2b99977f3e3d29c75237bad86a2a63f34c09246. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/EGA010541433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45886e8fc1c8c2498564407d9e45c45eb623dac326512cddd38e54132c2f3d92. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/EGA010533755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e97332a1f6dd35028adcca4f30aca89ae71c56b65fc00bee3450e037c60f03. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/EGA010541579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e475d50754abca8220f311aa68aa63d3e97d886ac623d4a4615f2a0c9c389e. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:20:34Z), 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/EGA010541625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5427de63fc6a6ea15491de65d66fa939fe93e04e1bc3dd973f4dc816bc81d8. 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/EGA010541627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d77ba81e579f5a5611cb93f3a8b6b43a05122595fc7f56cc9e1233ec5fef0da. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:38:33Z), 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/EGA010541629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585da5d27901a765eb1223fa89a0c1063ab139b0ffceacd0b66ba5676cba6a11. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/EGA010541630.