Loud Harp is an American Christian music worship duo from the cities of Lafayette, Colorado and Provo, Utah. Their group formed in May 2011, with Asher Seevinck and Dave Wilton. They have released two
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 0x8b96373be21c40606d183b172c94f02413c91a1b31b8ba79a5441c004c3192a1. 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/6d996909-c938-4632-ad32-eb7b54645ce1.json and https://artists.proofprofile.net/proofs/artist/6d996909-c938-4632-ad32-eb7b54645ce1.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 0x444378f37c0c0d93920c0e56173a32157ac17fdbd84517ee5ba22813065fa07d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:34:47Z), 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/TCABT1438684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eda92d28c80df0bd82efbde25c7ddf8a14b42ee713442b12bfa8f2d061f3ac8. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCABT1438687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78c25d7e40fb955deb9d75470fe99d464689ae3ea0adbe7c15a136213893898. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCABT1438688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadd07f7b9f07dd076552bd08e2a97f8318d474f3ab38f62b74f445bdc72ca6a. 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/TCABT1438689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314e36aa6879540a7c0c7597e8b7ef660369ae0110eb0e2220eb0508548a9ecf. 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/TCABT1438690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4351ad35ea18410720cef790e70ec941a4d09e7a9db02c261e1eb70d4575cb12. 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/QMKEM1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bc665bd0a872fbcdf7cc88d9fe4884dc8c50569d52c285a2cc8c4005e426ff. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:24:58Z), 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/QMKEM1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221d76aa786f58c59c69c7508b0636ee520504383588365fd6a1e9be4dd82bc9. 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/QMKEM1400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb506652bbb9322c1e9f0cbef1f79c0eea379c4aa9ee4178f6d24d888252b2eb5. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QMKEM1400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51343c5e6711d4ed03cda384ca0b81bb26754ae2ac1c4fa36817f9f5f8c6a0f0. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QMKEM1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dca8d5ffcc92f1d4613b8ff38b5734ec66a9ccdde17e14c1a50ede3668bae84. 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/QMKEM1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208d26c892bffcb926c8fa93e4920757e1978833e0c9245faec394d4e7ef847d. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QMKEM1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a8ba36a0c0c9b2de43a35158de868675b79f5ee8ad6b8730f354bdde546c1e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QMKEM1700009.