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 0x54e594f4615895af2fb605b221b9febfd5d72438243dc88d8d45fda13def7a23. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/302bda36-f081-4724-b0cd-10db576baadd.json and https://artists.proofprofile.net/proofs/artist/302bda36-f081-4724-b0cd-10db576baadd.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 0x4a685a07b0afcbb8ceb73bb21c17bc12a102a9f956c472b3e8a31249564fc914. 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/TWV671600045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6051f378d3607587d1c730793120a7abb10092f1c16166403cda8fd20aff46da. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TWV671600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ab66533db70d31fd5c467f1092d09fbaf5b06b7d5ed15bcff07d658a6c548b. 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/TWV671600020.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf11928a3914cc8f3d8cbe67ad141b31ae8915044593b4ecc81a80ac482a04f. 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/TWV671600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865ca0d0087f40bf20b9bf3dd4d4f5da7a55bcc0fffbdb5341a7bbd1ddfaf9fa. 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/TWV671600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f25af57d065c9ed1907779af725c595b003e253d170c2ecadfebdae1bcf6428. 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/TWV671600047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb1ff87b2c657326edb3a0769bb21e681b6db47ac36afe16140a73d77eef853. 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/TWV671600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739cfd5f723da9548d9d961faeb9b37ffb6673141237865a37b58168c37b06f9. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TWV671300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cc0ed81ef8d72e344c028c2d1dc124cfcfb928bd963a78627df3d27fcc8128. 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/TWV671300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c26ccef9579ff862beff03dba80871b34734a3b8862296ab6c2c99f1a83c5c. 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/TWV671300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb9fa1cd398d7a84bee81253c5c875a3c14b736410ab884a0cef49e16c7a98c. 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/HKG731685054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fc8de6eeb22404db80f28cc29f221473d54f1f6c57d8d1c84fc534bb3e424d. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/HKG731685053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb94355755bdcc07326981111cf47206dddf1eb01fa1c652ea2f62451aa5660. 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/FRX202334191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc718c97aeb4c43f1d57dcd7c7e18be80f98188c12467568c5e619a944900ab25. 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/HKG731646932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15aac569bcf97733021e76372afa116c8d31fc98f759d98169c21e73cdf4849f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKG731646933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc318019958a3fafaa6e40ab0965bd13039245de3627233f9fde325fbcec7a7ec. 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/HKG732128069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7cb30b8e8083b045d69e9da919b9a528305d61637e0d87dd9d26dde6008e5c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKG732121217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebf687dcde4dd37e0a03edaccb565a259262c9d64120acdec1eb0351e086050. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HKG732120298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3661331c512d8c20c1a315cf28c086ba85932e6484363908b9b9746ec5663895. 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/HKG732025923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cafe284df0b721e295c831fd343ca3aacb18a1fca7757a1666dfeba6b814b0. 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/HKG732118614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b88b0d5c32f024b8a8a893f69979c220d061563ae9eeced52f1a18200ebc15. 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/HKG732103648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684b622053e1d93c2bc7a0e46ad37d9c20724306e3f58d58eb82162ab86adf33. 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/HKG732118612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5435abb11b96b58ca131068e46a079dde4caceb976557c195a508d42c21de6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKG732118611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d8851ea336260e860308baad860ab64666ed4487f762bbd251b8d1b66f93ed. 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/HKG732118610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65754993dd63abcccde74006b51176c85ee385e265ced54782f05a83a39bfaa1. 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/HKG732118615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf11928a3914cc8f3d8cbe67ad141b31ae8915044593b4ecc81a80ac482a04f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWV671600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ab66533db70d31fd5c467f1092d09fbaf5b06b7d5ed15bcff07d658a6c548b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWV671600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36429d98cb92008e6079616fe739fca4be985e3abc2c11d64e52abc79003dcc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CNZ632200628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87445e28966723b08827e31ab1f08e5593f97fa039d7c25fbdcb308df15394c7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CNZ632200636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a75df1f01820b68f2d3b98edbb51def59acbbb67ff2b2de5ce851b585963e8. 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/CNZ632200620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76d59f44b5e381cc888a21ccffd673f71ed13c0ba1b715e33ba1d24ccac55e0. 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/CNZ632200629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b437e19de80128c7d5ad982e25db375d8ec7d8206c08963cd540df2cd6d0c2. 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/CNZ632200630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe109f1f72b898329aff601648147aafa32981f450fdb0c8c95d2047e60952b71. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:02:50Z), 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/CNZ632200624.