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 0x85816899a489ff48a25adad803b2fd39787ced206747ef9487e602564c9e0bd4. 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/f257e420-c1a2-46fc-8d2d-a79bfc23291f.json and https://artists.proofprofile.net/proofs/artist/f257e420-c1a2-46fc-8d2d-a79bfc23291f.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 0x56897a587473bb66ffa6f73f4f469d63141bdd780c57728039351b3a21f555ea. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:45:46Z), 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/USX9P2037433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0baaa101914537f44d1596da61c75d49a1f5bfd7f392d429899ee685a4952fe. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USX9P2037443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5ea697da316eee40a113252a51be0c18976771eb0ab13fdb4c3abf1c9a3de9. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:27:33Z), 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/QMBZ92017479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2229005828fc77dcbf359adb2eb9ef957dccf6a23129a6d3afd8c2b7f4d31156. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMBZ92017480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8544a87f2fab5aae8ea5cf300d59780bf5a26ec299787886a102ef6a6fc7ad24. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QMBZ92017481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd018c6cc4cc853737f69b7d694a53c8cf2bef4a62e155355a7c3571adc3f8e9e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:36:47Z), 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/QMBZ92017482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f555d7f3214e6e7be9dccd879367d10c9c3ad3571c43cb1e6d3d4b45ccb4caf. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMBZ92017487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e056463d7ed8a53266bbc7313f1a70983e74db26b1a36529ded1b06f8a0eeb7. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QMBZ92042331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cda5a169f648d263ed6edb359079a288350b0bfd6cf853ecabc9eb59660540b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMBZ92042333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdd4ccca1138d448074721f8f694c103581385800f24bfbf9472f5cc152dd18. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:02:01Z), 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/USHM91938829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c40cd799eeee28603d955caa342f4bdbf95d6ae834325d5e626b3abf359d17. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T01:03:03Z), 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/USHM91938830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4c66bbcb7061616f3b36c55bd8fa16650719369569fbd90208b8c2ccc08e9b. 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/USHM91938831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4348e05560ae552a88453485f77d88e4166f0d5afe52a621aab4d5da345dca0. Chain 2 (Bitcoin): anchored in block 957613 (2026-07-11T21:37:58Z), 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/USHM91938833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064efa2d869b0594633da1a13a377b8f70d17dd872096f307c9daad3fc1b517b. 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/USHM91938834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8475243a78894d2ca2855418a8fa4c4fe7b032f72d20d28acfae4aa9923bf6. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USHM91938835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7f4bfccf0f573589c56116bf8730c3210d1b9a9e8e98e4740d5f15eff676d9. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USHM91938839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08379d8d8f2b7a71eb1d59387be2b2e83d8bfbe9b71dd3289bae4262f6e7bae1. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:22:01Z), 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/GBMJG2109179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9e4526438694fae59e74b7b592fc22e0359bd4806d1f64325499ec9d9aa07a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6L2205430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1805c7e5c517aa16186e6b9eae6b34effd94c9217d3ee30dbb02b6b4c3baaccd. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZK6L2232753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f006ece2854c95da08d627c0d3e62303bcced12e32dd02470a281756181632. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZK6L2232754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06c9d04972c06ce8cbc7fbe0e805b710ae696d84fe46c688f02f6eae24b7259. 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/QZK6L2232755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311fd182e6a65f048cb53f70e53c772e7921e63b4eb72ff0491d57005c408988. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZK6L2232756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad92ace062d11ffe29c2803702b9504b60fa856c17f7b4cf5ed8420230599431. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/QZK6L2232757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6470773f99b5a04fc26073911f93bf367052a34454ad3a4b0ba321e821cb2f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZK6L2232758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfa620e7c85c52312e89f1128f3486d8a4dbb27cafb71a5709381cf4576a170. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:23:22Z), 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/QZK6L2232759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9da2c880a89529e85dd485142e66a55245f33b83edc7e1092fa84ae3d3c844. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6L2232760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc037f7e2a9717a4497c13bef846cd2206693b6597e3a8052c04464b50e067026. 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/QZK6L2232761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadb02ac0746da8f28f7ed0fe0867842b782a049968f8beb75c00d1707f0c6ca. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:33Z), 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/QZK6L2232762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b28d25cec0541337c25d93c2bf8ec31b990f3d786833fefd96e50ae0be60fed. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6L2232763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12a9b0a6c73a6a0cdcfb4533448b0446f7bd2ba9b9657887dd1e7b7f7fa510e. 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/QZK6L2232764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bb0c481f954a1d571adfe8a5fc2bf456aefc3a9a854ad3798b20e92618c752. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZK6L2232765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fca03dc11dd9a0d21cfec54370dd5e1712a8aa115f28c436f96c22df177bfb1. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZK6L2232766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ff6bf67cb07d41a2e91c97297e3f97fca71926708340e7fb159442ae1e6daa. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZMEP2237760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c80a169f23d5fd8ac506a72eee8b242b0fd36a022683493f0844e663bd65bd. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZMEP2237762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2e49618dece411f8552076510c31856e0d4c5ea99002291dd9473a6e26d080. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:42:36Z), 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/QZMEP2237763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470f9afc960432fefcbc6d51fa1b978fee7323062254efe3b1d1150b3895b650. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZMEP2237764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5bcab06c0c785f29e982eb0acf6b01626783f63feed4e4de1f6293a219e732. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:12:06Z), 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/QZMEP2237765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6850824f7393ccdb0818596dc8b1a73395b9ae3485a0bfdd3298e83e180b394b. 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/QZMEP2237766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a897ed31ba648f86678b3c92f0d24a1ce6eb720b955cdba570272a19a467219. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T16:36:17Z), 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/QZMEP2237767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf2e0b12c79d539a898e8b68c16751400ef0cfa368a7f0cc3fb03872298202e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZMEP2237768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd972da40e7f5c17b417b199b25203b9bd23e029676397d06a53903a9cf3649f. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZMEP2237770.