Marconi Union are an English ambient music band formed in Manchester in 2003 by Richard Talbot and Jamie Crossley. In 2011, their live keyboardist Duncan Meadows became a full time member. History Ma
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 0x6bcb6e8e7323b52c2e89c433c7895a45e5688671fcf41b85140c0188a6c441de. 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/98f04285-8ce5-478d-9f1e-4a7947d8ce4e.json and https://artists.proofprofile.net/proofs/artist/98f04285-8ce5-478d-9f1e-4a7947d8ce4e.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 0x8f5586c23e7395333ad8a80b1120aca6a3e547950bc1e9eee5f0882a8d0b110a. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GBDDN1100471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c68b0df6392259bc613947adeb68760581829093a875cec4bba6ae23238019. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GBDDN1100472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc140f692c0d9788d1f072512781fbb1a6b846b5bc092b263d1e4798fb97077f. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/GBDDN1100475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3117e69cb9251bc7413981f72d16e2c8d16dde49e07f01b92eb00ae3739c94f0. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBDDN0800304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9542941a99f1c2cabb1944bd76b35ce1a729f8b84a18ef442e852caeeab11942. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GBDDN0800305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c6f5e416f420197c2d6a158dd717ccfb463ea1bbeb134d199f710df22e6437. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GBDDN0800307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7ea89842e78ca6c250ec293db97bef93bd81e2e788b975f1baeb08b303656a. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBDDN0800308.
Beautifully Falling Apart (Ambient Transmissions Vol 1)
Weightless (Ambient Transmission Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb866cf34843c8522777fe893954d1fa019b1650af1e9038eebb34df42a3482a0. 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/GBDDN1200503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a00b2a86c016e260d5d78d85239f6d60db1028762c595bfde1280447f01341. 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/GBDDN1200507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde04007abc7cbd412ad16b5394b58e7a295c51e268a881858db89bd9ab068746. 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/GBDDN1200508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f861836c6e4cb1ab0f7b16094edc7d10d0999285f89e9075dffb789647990c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USV351350730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f861836c6e4cb1ab0f7b16094edc7d10d0999285f89e9075dffb789647990c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USV351350730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935d9e7bd0c935548b9f42d045cf1f95e6d1de9e3f550ed96c092c006d68dde7. 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/USV351350731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18870ee0137733dac4630b1da55835e31f3df04644e8ea0a4b88d1104178af72. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USV351350732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9725ec2ee49d079797698a813deffd8cec5486160bcd8197dddaaab301f37947. 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/USV351350733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582d7646708d9719f36914cd472b93ef8e2a1120ee3e2410de8504e19eddfa32. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USV351350734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d609420a7e055e4cddc6fedf4d3d125a453d7065cb9024a7484ec2bebcef18. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/USV351350736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bcc4b622ebf818a26d10b2a5e4b494dbc0362bb28928b5c2bf3e0d9d54a0f7. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/GBDDN1600627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd0e94f457f34dac5b97e71e24e905e00c82e1b92a412034d6deb1502dab594. 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/GBDDN1600628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b8a42511bde9cc2b1584b04616a86e68f8f184998b060ec811cdf95483db91. 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/GBDDN1600629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a91b575bceae7b3ff509ad521f69a7851d8cfc51e3471cd670f8dd5d371b440. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/GBDDN1700661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f3b546ee79c0621b2904ee9de4041ee56f559b1d006f2a3358d4925d0fae8d. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GBDDN1700663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73dcf3c456a45034b39d12f4abeeacfa1a3701ba4e65df5a3b3252cfbbba1e1. 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/GBDDN1700664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7d0c7516551a153b88691395f7f647d7a30adc5cf41f24d6f0077535f13fa6. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/GBDDN1700658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7e24a4420d39b5b8dba70e5a5d325cb06a2ca1f45b66e9e7774e837c5e04f8. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/GBDDN1700659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b625fe384f748bbc442aae6635df86df72edc6439e0c5094117b79e0d1b1ea. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/GBDDN1700665.
Abandoned / In Silence : Steve Jansen Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe672f19d8c6929f67b66dcecf69edbf4a96af21d2193b00e496906831e7a6513. 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/GBDDN1700667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc5afb22ae0b989794b24c74d06db6a658ddc25382740a70620f9e28543a4d9. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/GBDDN1900682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b07509597c3f0969f5d973a9ce32d1219416f1b79e11026bd4f5f6270bd0fd7. 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/GBDDN1900683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061100931416a83cca5a2a6758ca4ea5b67da8e34b4fb815f53196427306a71e. 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/GBDDN2100697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b1d82572fb2635470be2fa700b1072adee4913f25085171d13310e5e1a2d64. 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/GBDDN2100699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d85990e52ffa0755f98bbdb398039c792bfbc426154c2e3c21283c31f9ae2f3. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBDDN2100702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177cf3db0ec00c099068bd04c3f42299ef189f4d6bc27351a457413064f0ca89. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBDDN2100703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ef6e928720fe5dc6692b66ca713b819886a847a5fe8bfb8e39773a4e593e6a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/GBDDN2100707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabeecabf17302572cab84faa870a5147befb19fd24a04af1094ea5f992421c93. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/GBDDN2500729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdc19d25ac3ed7f56f6c0f7b9d983529421c3053d5dca51ec4718e798668601. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBDDN2500723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc51106d512dbb17a9cb55553afffacd00b4ede706575730ce72e7dc64fd63de. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEN961500413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87666e3fb5ba1a7926ed71643edae69ae7ef6fd3b11bb914635abf38e7a41537. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEN961500414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce87ddd3870bc470509ea29a09baf5a0b542aff69b41a27a0470e174737da68f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CAN111700528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfd49308d8b56c91faa7b28cfa26e83322bd77086c827fe8c2e9b6be0f7f0a2. 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/ITI401155490.