Heffron Drive was an American duo formed by Kendall Schmidt and Dustin Belt, both originally from Kansas. It was originally formed in 2008 after Kendall and Dustin met each other by chance and realize
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 0x0e7034b94ea2efe2f252b40c21ad17f8793237874bb7e93683c6cf635918ffe1. 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/8347a035-bde0-400e-907e-c9d20b436ea6.json and https://artists.proofprofile.net/proofs/artist/8347a035-bde0-400e-907e-c9d20b436ea6.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 0x9931bee99224264d4b43a5e74f11f7aaa149f2cc74aaeb586e23abe1e892f682. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TCABZ1410364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14d7e0b60514bb0b14180ab24d7c4a99e684259e28a267746f252fe8cffefad. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/TCABZ1410366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8de4db5789bfe8913db484ca3fee45584fddca66bb35dd541306a05657e7730. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:07:03Z), 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/TCABZ1410368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205943ec050235fa7a6217d38fe2b53b18f411a2b9ddf1cac7600c77a56f78e1. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCABZ1410371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8568970298dccb6d1acc68735e182aeb07a8e6df287f127e50279613d2a968a5. 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/TCABZ1410374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5ea58a5fa3c23acd430afa0153665230aa34c5c04e260710fa9cbe47824dfa. 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/TCABZ1410375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f74c76362ae01924eedd79dd6e7b62cd9ff06f4c7c089596a0204870a0222b6. 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/TCABZ1410377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5f5d8db5e5d4259b22e89585fa7fd479848073986075e8f6e94b7678e7e238. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:41:23Z), 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/TCACE1570213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5c793292ab443a9efcbc4f1d27dac6c570cc1a04a53a49d0aaf2ec5e81a980. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:41:07Z), 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/TCACE1570215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14b699d6b73d19a42e03d7544cb2c6dd3d1b4ed998c7d75dc4ce1d49458d3e5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:04:15Z), 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/TCACE1570220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae8dbde0aa10acdc3802bbf50ec73d276fca7e6b7f024a3cd078bbb01446f56. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:11:31Z), 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/TCACE1570224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51783180ecacc0f807b8e18b6db4e25406456ec38d7e9c259842ba7fcdb64cb. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:04:08Z), 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/TCACE1570226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7263f67ac4279ced2150b5fefcc940fda8bf0f67f2694d78caec83a6a164f024. 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/TCACE1570227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6a7f6c9d6b937cfacb801f1b1000476be19d324b172a5e014e9017f6d16ca2. 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/TCACE1570230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6f8b0c872d394e7578aad2735a7a19b0471265041e7b43bf11300eb13b162c. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/TCACE1570237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd00833686c95eeb9f3f618e2438410827fddd9b891b9ccbcf7dba16594d386. 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/TCACE1570238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cef91f50b1be361c24e5a38cba6780d7a2687a8ee1ea0009524b8edbb3603f. 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/TCACE1570256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bb19391a0f5f39fad47321f1a871f90501df09513090683c5960a45814c655. 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/TCACE1570257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f95c7e1e61d9cbc32d79765831e74feeaec119094cb8e802a4a124cf6e8933. 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/TCACE1570258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3140ca5b2efff51092dbabee948cae34018fed58cfd2c100b9e1d1c8a47ea705. Chain 2 (Bitcoin): anchored in block 957703 (2026-07-12T12:26:40Z), 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/TCACE1570259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dbb6780fc12cafb324ac8aeb264f58da676c92f091cab61b1d2fff09918740. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCACE1570261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2aaaecd86c76b38e08eea4297c649a9f0e3cc740961f85454f24ea9ae841e4. 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/TCACE1570263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce25ee4e2550cbe033c3060fdea5eb64e76a6d3fee2b5a542434d9a587581d81. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:00:47Z), 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/TCACE1570264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbf6fd124761515463d5def33e73e8824fbd159a3a8a4d77cc76f9b9b9f87ac. 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/QM65F1501112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb532a4ab01b8c96aa029159a05ac5a3dbcbc4399a3b7f161a860b8c58e3291e. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QM65F1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77283139efd172d4d00ac12840b4e444d1faf2266db09db0de08f0a4bd13652. 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/QM65F1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ade7d2707044155747f70e5e9a7a7ea527b07cd4019848e40e3b1448b9b671a. 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/QM65F1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb65510160628488e1a6f112946c57b98553164adf31055eb5b346e57e8e8cde. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/TCADL1801091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39e0f981c05ac4652e2d123af87767cfe203ffa5c4a979834641ff3f22d8fb6. 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/TCADN1821680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2999ad2b4e6a3f3f9ebe0585838e2d4b1a530ebb0d05ffc72a3dedbc305e847b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCADR1829299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37081ac15fb5663ea96706eb46ecd2626067525955c1b789f74766862a014c33. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCADX1856073.