Ben Caplan is a Canadian folk musician from Halifax, Nova Scotia. He often performs with his band the Casual Smokers, and his first full-length studio album, In the Time of the Great Remembering, was
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 0x0322995f0e65e7220bf52f408b30a3c5d1c2695ea287f955ae955b54f5e8babf. 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/170cb80b-99b8-4c8e-8126-685854ab926b.json and https://artists.proofprofile.net/proofs/artist/170cb80b-99b8-4c8e-8126-685854ab926b.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 0x4fa9f272db47ab0a07fb9abc96ad3fa0a3b7954cd37f9046f7ef2dd32e8cf98f. 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/CA5KB1101004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9250f6b970dbc9531f3653129c3b79223deae105e5329cfdf379cc90eb3bcbb2. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/CA5KB1101006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d9f58e9a8ff4ebf96791e659c55bb0667f9e3f3d786c3ca0d1631dca7ad243. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/CA5KB1101008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039e867beaee7b728b8ae99f559fa91b6ed70e7600cb3137d8ac28ded84fca22. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/CA5KB1101009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c97a492191f38f491dbe873e9289b80c41c5b92a83629b281cfc43828691f84. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/CA5KB1101003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa9f272db47ab0a07fb9abc96ad3fa0a3b7954cd37f9046f7ef2dd32e8cf98f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CA5KB1101004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2176e7d769487d1607675e4c2c7fefbcd071d88502444e8a2b079c995030f81e. 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/CA5KB1101005.
In the Time of the Great Remembering (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ca11f4c9536e1cf5d6f30ab370db49e2034827d9592dfe69ceb74724f771ff. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CACN41500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4aebf6671f7f1cd9c9acbe118adbd731823b127f36aed4f359b3a307ba7817. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CACN41500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8119cfb03b68c829d06662049492bbeb0610407cd5d3fe73bbfbb0957f196a7. 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/CACN41500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da4f24b881719a60c7d07bf3ea092dc0dc37bb46a992dafbb4eae5283b7671d. 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/CACN41500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b56865d6e6bcd43eec994a3142c9ea02c209e4b67703ff88eff504c73454fac. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/CACN41500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1670dd82563da9325c6fa1683b7e44652435fb39564ebe8babdf86986af9d502. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CACN41500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5d2a5e1a3172110312df5ac86d627d6a18392da4430f5c1ffd572b9e62d5ca. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/CACN41500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedd66ccb833aec013eebd45f9acd5df8619b47eec6571cb7ff236bb53896488. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/CACN41500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e7359406d01f5ebecf2a51f825e2f35a5e71dbc3808cb02e7106f830e6c898. 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/CACN41500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b817b0acb9f80e9d89b92a984d17d86b9eb60df07d6696c9a257df271944425. 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/CACN41500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354f34ee0d3ed7da5ef1f42b48eea19193639fb87e7acfdefaed4d8b0ee30d8e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/CACN41500008.
Truth Doesn't Live in a Book (Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f05655d32baf963fa2899f60388a6f836e20837b0315fb3fee7304ac5cf65b7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZ4B61802802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ff6547552616005ce1330c2296ce5d55ccef40f46d2a4362a0cdc5f0d6ffe6. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/QZ4B61802803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56da8dcb9154ca26d580ffb89fa73926bb307d4ef2346aa4f5b84208cc643218. 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/QZ4B61802805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10aad88b625304580d0200a068da05ceab5b1da648bbd77462c4e72aba9a3f53. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZ4B61802806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf511e868a465486a93a1d5c3daa862cf6ad1b6d667fb2af632657760c48fb5d3. 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/QZ4B61802808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf884375b15257e2d6090759b2319cd554202b7777e604ce01ec3acd463e764f6. 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/QZ4B61802812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c893b841ec6137c5ace6bbccd992be06d08eae33313ec9be86414de763ffab. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ4B62062101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb22ad1129908050d94e000e7691f2d37e650c163434d415b8deb8ffc4cf8e6. 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/QZ4B62062102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0039866e8b44ef3033fef80683664ad4f9ee621fc23edd7d39db4d96df6660c7. 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/QZ4B62062103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf84b70458f78dc388e075dd875bd99951c36a01fed05b0404bdd4979dd0c6c. 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/QZ4B62062104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67ed58768bbb417931053ca3122b44478a7ad4491959e8eb69232a175f555ec. 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/QZ4B62062106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305e907b81e30beac66e257c343e78154dda96882a7517d9a8f35012fd743dc1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZ4B62062107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42e308a61a7db0543b15b2f095f4378d22b3b2cb114c2a6facbb8e2614b5f0e. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QZ4B62062108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe462ef0707cc9dd2ab54ec766e055b55b1ffcbbfc100616f4adff0f953c1e744. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/AUMEV2514126.