Marc Bolan ( ; born Mark Feld; 30 September 1947 – 16 September 1977) was an English guitarist, singer-songwriter and poet. He was a pioneer of the glam rock movement in the early 1970s with his band
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 0x8e8da237c9bfafe2388272d91ac2dc93482b3d1624c4899c379d3d6b2fe5232b. 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/3946eeaf-7de0-44f8-b177-c4e7fcc0ebbe.json and https://artists.proofprofile.net/proofs/artist/3946eeaf-7de0-44f8-b177-c4e7fcc0ebbe.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 0xe919e0deb9d7a8ffdac46cc5771919aa9deaf4c0df9206b239252aa02ea73612. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/GBBLY8100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a116af54731ff319473ffb26956b3732ef320090bd4a07bc5c26bc89090389. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBBLY8100111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75c0910840d5f47ee3dd92f3a927a37715f3687399d3565f8f297445ae83545. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:38:34Z), 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/GBBLY8100112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fc28148e84c24bb10b9c789609db7e156c4f77f92aa4bc76977f26c1f46ef7. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/GBBLY8100114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a194862d2b238d40bf02f05ee7d970f7263458f01a1181d8af981e9e2f0a7e. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:31:50Z), 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/GBBLY8100115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02aa5d9da3005af1bf7bce244e58992df9d08053fd55dbf97831b509aa490f0c. 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/GBBLY8100018.
Children of the Revolution (Born to Boogie Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3770ee6e920a4746cc49ec1680a09ff0206bd2ed68253f82158373bb448ee499. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBAJE0502245.
The Beginning Of Doves (Deluxe Expanded Edition)
The Beginning of Doves (Deluxe Expanded Edition)
Zinc Alloy And The Hidden Riders Of Tomorrow
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0049b35da914c35fba2515e0b79c2f7354db133a1db5ce79a5e90e47aae6ed55. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBAFR7400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa695f931f8b7abb19e9912ac8ef2d4e88de97716286c35d5ca0c440c1929e8a6. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GBAFR7400178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad9977b41b5c434397227b07ff13545857e9041b2f5d1ddf694499a2eced4d1. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GBAFR7400180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96143aeef321d0abac961bbfd0f15426094deaa56073e67f9299df076c25773e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:09:43Z), 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/GBAFR7310033.
Zinc Alloy & The Hidden Riders of Tomorrow (The Visconti Master)
20th Century Boy (Master Version with False Start)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e4fb5d1ff66125848c22a4046479cb44e0d245acc35167e79c6aef9106f70d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBBLG0001947.
Shadowhead (A Collection of Session Takes, Working and Master Versions and Mixes)
The T.Rex Wax Co. Singles A's & B's 1972-77
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25040cd9545c9a279e7ebbb96ff7815ccab8619dc60ffe45dd3a0dcd8bfda44a. 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/GBAFR0210076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6b86a4104ddbce0dc75d62a857a317b302ef1b14321053bbc94d94901b3224. 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/GBAFR0210079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87241370a589878ef421d0ab6ad2030224328a42d0f16c26882273e8cc9f7194. 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/GBAFR0210085.
Born to Boogie - The Concerts (Live at Wembley 1972)
T-Rex Tyrannosaurus Rex-Bolan at the BEEB
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec41c31a206e0630dba477063672258b262dd18f85a42658521eaef07217cc9. 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/GBUM70706731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b3d84b9388673a3759f044205b7c830c9aa40f5179e6ce4e830a73955b63eb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:47:43Z), 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/GBUM70706732.
Debora - BBC Live - Paris Theatre 01/01/70
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb8d9aacc83ae62e549a4bb976a99848a026487064b00f650fac14ac2b44909. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBUM70706674.
Ride A White Swan - BBC Live/ Top Gear/ London, 1970
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33d2b6bbdbe4b74f453c45fc207f2c739d16992b0185537701f5eccabfb5696. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/GBUM70706681.
Marc Bolan & Trex (The Acoustic and Live Collection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705c6b665d0dbb075cd5df9b6494ff1244a2ffe002d1073061a0442ed4045488. 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/DEK580920120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d806cad28b13b97e600a0624ec02406bd5388ebb31fde78075b47ab7a36bef. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEK580920121.
Unchained: Unreleased Recordings 1972 - 1977
Cosmic Dancer - K.Day Radio, Los Angeles, 15th Feb. 1972
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cbdf9ef4e103edccfd999aa313d796afda669cf997ff853a629224219fb7a7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBMMS0900163.
Marc Bolan At The BBC - The Best Of The BBC Recordings
Born to Boogie - Live at Wembley 1972 (5:30pm Performance)
Children of Rarn Suite (Extended Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f0434d5de37dfb8dc0d568d113533ffe1cae75d7947efe4710d45c967ae88b. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/GBMMS1900161.
Beyond The Rising Sun - Unused stereo mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d4eb037da64056f6b64fee8ea65631481d3aac92a178ad17f8abaf171cf184. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:56:12Z), 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/GBMMS1900162.
The Third Degree - Remastered 2019 version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c847a7c53bd6cc09fbdbc71287ffce03bd443648b538cafd83f893704c76428. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:19:10Z), 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/GBMMS1900163.
The Lilac Hand Of Menthol Dan (Dan The Sniff) - Remastered 2019 version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c675a9a2a0827f2845125a1fc80b4f71f24469b3f2d336a14b8f8189c0200f. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/GBMMS1900167.
Desdemona - Version #2 alt lyrics Remastered 2019 version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7c59b2ab4431babaceac524afd0147f1b304a6be70b3e6dda0b2e4a2b80374. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBMMS1900177.
Sunken Rags (Glastonbury Fayre Home Demo)
Dallas Buyers Club (Music From And Inspired By The Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276dfa44140d176b43a6acf2731eddf650b9d27ebd11aafa971ee62310bc70a8. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/GBAFR7200153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588080edbeb5049d529f9e7728f420b8416cecd2aa0dff2ceb0574e30c47987b. 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/GBAFR7310026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a0314e083da3cbc8e7799e7a81ab7c06d48ea9ccd1fdcd476e06b0f2bae02a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USAT21303776.
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