Younger Brother is an electronic duo formed in 2003 by Simon Posford and Benji Vaughan. Their debut album A Flock of Bleeps was released in 2003, followed by The Last Days of Gravity in 2007, and Vacc
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 0x5a120e72f699c5b20e35e13a91c16a1133368e6c9cb672e41d2fb00b4fa73590. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c09f9ada-78a5-4f44-b52d-53734063b536.json and https://artists.proofprofile.net/proofs/artist/c09f9ada-78a5-4f44-b52d-53734063b536.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 0xe9b79c24a1b8c7def96bbc26654e5918eaa4be00f91a29a621a4972a1b9fa935. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/USA2P0300363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f18563cb856b394c776c3c529a0c28ea9f7334c37a9a9de40ee194e5d5f538. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USA2P0300366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd344ac4ae275f27e08affd41e65e604ebff32e232c899bd4dd114943b4a680c7. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:18:06Z), 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/USA2P0300367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a35a2c6b2aad1af1535af6c00ef620cba6eaab68cd86bb555cc8d966d57cae2. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:06:11Z), 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/USA2P0300368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf86e69092d90f3c40d3a3e791baf7eec3f44e66c6ce91898845fdd229c07306. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USA2P0300369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d5514f793f3357477a5f7ad1db60ae04f061e995625ff31e34e159178cc7ae. 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/USA2P0300370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d2e348c53228c48d25da5a4d9ead29a10fb3d084bfbf9bafe187284e3e868c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:25:10Z), 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/USA2P0300429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ab7030be5d88333fd8735897045524749ed6306d991a78eb3871ce3bc36167. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/GBBMP0700243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6e31e33fdf3a1953d99d3fd819d8263fd22bf231b9afa843b9e45d46806570. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/GBP5L1000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25912a363ffc8947f718e8f369de10168d68fbc94bb904d56afeffeecdc1716d. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/GBP5L1000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f0d94738473442f1288dbac80318ac2982787d2e9a41201ab4aa2c72408825. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/GBP5L1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf635efc8a14134ffab348f37b1b2f1adaafcc56ae10c8f9dd9cef5d1040fd302. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBP5L1000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16b5b20cf12b05fda4f33808b1a02c14082911ec9533dba788598f22d4425ff. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/GBP5L1000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa40ba538395acffd079c5f86a0e7aaa18e6bcc5bcd7563ae3127e8eedc42845. 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/GBBMP1200604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e28e33a01d26a2f2506c475197d9b751bcc828f50d3a13e5e62e700234364a8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBBMP1200605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf23c2b5db82de589d36faaf166a66b4751b80078d468c0b9ecf1a382456cc76. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:58:15Z), 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/GBKQU1457846.