Earshot is an American alternative metal band formed in Los Angeles in 1999. The band's lineup has changed several times during their existence, with vocalist Wil Martin being the band's sole constant
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 0xf69447469782b03b904cf23d20c7b34aed590a67e7bff53c68114459a917441d. 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/d261dbc9-a082-4b43-8d25-4a488f05b7c9.json and https://artists.proofprofile.net/proofs/artist/d261dbc9-a082-4b43-8d25-4a488f05b7c9.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 0x26c7143234f12a7071beda28e8879b746c178bdf3e39d0c7b6884c0cd7983250. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USRE10102242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca65f56609a1381bd9b6930c50ed664f9362127e8cd171cb84dd583e7106870. 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/USRE10102243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd08949045b62a9feb5b03dd327a8e79d24d8c08596bcb4267d32230fd01e20. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USRE10102244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56e2bff9446ac399025862bf3dfc373d0ded44686c2b4956cb4e5b16abdbae9. 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/USRE10102245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679c1c930042c9ed4abe3e1663e237dfea83a1e0d21fe541163eaeca12d89b7d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USRE10102246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d610fcfe724cc2c6e0715987d1f387507b01f18736a60cc71be5bc6852a86a. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USWB10400590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63acaff979bb82d70509dd8f30cab3b0171e6504588292d6279f6d96eb13a681. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USWB10400599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7675b95c279169c836aae76bb18e83d218f10ec534719a8865ec27e5ed26a88. 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/US7WJ1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf083e7edb4fa1743dd813b5c7ecbb7442f5bd4712c63f6f0f2e09a339749f68. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/US7WJ1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f38c14505406e1d8222ed533ea08fbd3b2642c07f12ddad76bec7866a637b4. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/US7WJ1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fe159289a029739d40a77cbe364a00c8989903652571e6d22ab0d8409371bd. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/US7WJ2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025df98af3e7101f2c57ef62bbcf1cbd127f8482eafc31f59a98146aaaf52095. 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/US7WJ2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5d76f8a2fd9f563c40d65600286e4f30cac6e0bb882f1ec8a75d1d487247dc. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/US7WJ2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484698b30368da76c0fc01d5270d30af2d96fe314983acf8180febbd0ba51bb1. 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/US7WJ2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69af7e5038fcc8475a20f60716a3e7c5568c3820c11c102cba9f7efbf3817f08. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USRE10102236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d610fcfe724cc2c6e0715987d1f387507b01f18736a60cc71be5bc6852a86a. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USWB10400590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b14ea77ced16e55cc8c9bd09aacfb8737313104b9b746eead734c54c36a7c7e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USWB10400598.