1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x3e843c642ad1308a8816be2a871b8549d7f6dbf1417b47d9f881bcaf8171c325. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/193d9b3c-2b89-4eed-b4c1-2bc8c3e583af.json and https://artists.proofprofile.net/proofs/artist/193d9b3c-2b89-4eed-b4c1-2bc8c3e583af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4f9c6e5720b482198f1f760c171339a956c9e9cc8388d4cca8f6e2c66204b8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/56GZHQ4E3i9w9xgRkzitd4.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/56GZHQ4E3i9w9xgRkzitd4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6655732791703168562e58d70af01855b78d557c41c7b750a7a7cf00995231. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1zDS7aaXq57kd2aRkI8eom.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1zDS7aaXq57kd2aRkI8eom.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7f89772655f86c8944f8f089a424562c3a02c3009d5b8c1b5082e59925dc54. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7wV8kbFrT14SxCYJKTotqa.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7wV8kbFrT14SxCYJKTotqa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6569f425e12d14059683bd1625ac6174e71ded7fc216793e71b216a88b4eec7b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/72YY7UhQmE9JGqhex2Dl19.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/72YY7UhQmE9JGqhex2Dl19.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735b83d3b7ff99ee251faa644126e6b94a3261412db3d9bd1e51d8cb65b2855e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2jIQo5P1rUyKAyxs7xDS3P.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2jIQo5P1rUyKAyxs7xDS3P.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee9c8f94a34dcf1c73e831d685491ccf3a2711d460447f9073502ebbaa2f6e9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/40yKktoOze1djbT7Wtn9G9.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/40yKktoOze1djbT7Wtn9G9.
{"copyright_id":"0x64a1c1de03f772ab65b632c3ab6f318037e922fe7a5b37eeca8c45d825c86afa","isrc":"USA5W2200420","name":"Like a Billy Graham Revival","registered_at":"2026-06-10T21:34:31Z","spotify_id":"1J45thYrXFQcBjBmh8spfG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a1c1de03f772ab65b632c3ab6f318037e922fe7a5b37eeca8c45d825c86afa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1J45thYrXFQcBjBmh8spfG.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1J45thYrXFQcBjBmh8spfG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e67a2e2154030b6911a0ee4fab3d7b5a3938778d5e13dda6a7c1e7d841335b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/55dGP02wEm70DjUxPhBplb.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/55dGP02wEm70DjUxPhBplb.
{"copyright_id":"0x3ecabf6e0e5b4fc9cd5dbcfeaaffa871edcc3743e9d993a5adfd7647647efbad","isrc":"USA5W2200410","name":"Praise Opens Prisons","registered_at":"2026-06-10T01:13:49Z","spotify_id":"6rTDrXYk6X9RoTIDmAc7Tn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecabf6e0e5b4fc9cd5dbcfeaaffa871edcc3743e9d993a5adfd7647647efbad. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6rTDrXYk6X9RoTIDmAc7Tn.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6rTDrXYk6X9RoTIDmAc7Tn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cd633ca0524b35119f5e22acdc9c5f9bf695858e7366b7bfd8aab528571d2f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/07xahCr4kZ6QS8RJL4u6Ad.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/07xahCr4kZ6QS8RJL4u6Ad.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c1231426300891a5fc7a33ec2ae1502ecb8386e8a9f671e01b7b4025d46f31. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3vwR9QprIKhQaWkLyCIA0j.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3vwR9QprIKhQaWkLyCIA0j.
{"copyright_id":"0x1b6c729f2a453adabf8dce890e75ad2bbd5c7fae2f507b136a541da1812b5e03","isrc":"USA5W2200418","name":"I Got You","registered_at":"2026-06-10T21:31:21Z","spotify_id":"0T0JL40MWFd07hnEERKXze","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6c729f2a453adabf8dce890e75ad2bbd5c7fae2f507b136a541da1812b5e03. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0T0JL40MWFd07hnEERKXze.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0T0JL40MWFd07hnEERKXze.
{"copyright_id":"0x433bacda535f76eab743e03eddcc860e78e2cc12ab7f1e9cbd3f351706271de3","isrc":"USA5W2200413","name":"Love is a Battleground","registered_at":"2026-06-18T05:33:20Z","spotify_id":"1tMM3zGBC0bV9rEpTfz2HO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433bacda535f76eab743e03eddcc860e78e2cc12ab7f1e9cbd3f351706271de3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1tMM3zGBC0bV9rEpTfz2HO.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1tMM3zGBC0bV9rEpTfz2HO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2989e29e411e7d449207134eb35c51deee63f0f8f99980fffa4a2345d7268a44. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7FMDWBRfBRDHmFXJC7Frqy.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7FMDWBRfBRDHmFXJC7Frqy.
{"copyright_id":"0x94f23988dd8c5c085bff18bd99cc2951a4329d7cd7631469984a4b60acd3d909","isrc":"USA5W2200419","name":"Flesh and Bone (We Remember)","registered_at":"2026-06-10T21:41:14Z","spotify_id":"73TGaxlUt850EhBHXpSJuF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f23988dd8c5c085bff18bd99cc2951a4329d7cd7631469984a4b60acd3d909. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/73TGaxlUt850EhBHXpSJuF.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/73TGaxlUt850EhBHXpSJuF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa425e39089e5709a8e8cf6939282405c67d5c2a4b78a8e80f56b38b136106ee1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1O7VSfrWL9wR8ih6YLa1yI.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1O7VSfrWL9wR8ih6YLa1yI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003acf2ab298784546a0b52b4f6462d20b2b725a489fbe5b548f67b013000d80. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3rtCk3qLJs2ei794H36I9R.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3rtCk3qLJs2ei794H36I9R.
{"copyright_id":"0x04ca661e752f034966a9ea2237366e7e5d685dc2acc8fe840a0974d032386cc3","isrc":"USA5W2300961","name":"Lookin' for You (feat. Dolly Parton)","registered_at":"2026-06-04T16:42:50Z","spotify_id":"6tTCpZ6peX8JLSHNMn5RwB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ca661e752f034966a9ea2237366e7e5d685dc2acc8fe840a0974d032386cc3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6tTCpZ6peX8JLSHNMn5RwB.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6tTCpZ6peX8JLSHNMn5RwB.