Bernard John Marsden (7 May 1951 – 24 August 2023) was an English rock and blues guitarist. He is primarily known for his work with Whitesnake, having written or co-written with David Coverdale many o
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 0x46feb16b07481a83cbacf4399eac0aef9eda9d7e140b305d288345a69f0e64b2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a49a5df8-a6d1-4c2a-84d1-2897018b7291.json and https://artists.proofprofile.net/proofs/artist/a49a5df8-a6d1-4c2a-84d1-2897018b7291.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 0xc48c7d2209e282700c650d8481873b9a2f5134471b6a82d38f30336bee114ecc. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/FR6V81582516.
BBC Friday Rock Show Session 1981 (7th August 1981)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d366017c4351d8e2d313209d1d44ef52388e92453bf78ec0dd01007e796c48b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:53:31Z), 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/GBAYE1202172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a97251e19f3cf601acd6c7ff82175bc035baad1e007b90f8948f502d5b924bc. 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/NLB931400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bc11f1a28cde15e83f59331c71301d292a84c07a32faee634fa655e3530833. 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/NLB931400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d2e3f3a8493ac826786df20c70b8f981648a5a61920c02e36b53e7cb68f7f0. 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/NLB931400208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116c1e19d2b4f85d61f1e4bae98159c07a453ba65a40615bc8fa2a63f379f687. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLB931400212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6d8229c7f5c45b3043e5342b9a445942082123dbfb5239effd46d265135c92. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GB9S82100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a51951e2b2643216160d444aa0eaede67d4070f8075e413752f61a799989a4. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:29:39Z), 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/GX3N52300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edebbd0f290b6ff1e2547c20f9b7149a2fa8091329be6347e2f2598be13d4b3. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/GX3N52300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef57f4983558202791723091bd61a49d0edf236d4cbcfc9264dccb1904b51cea. 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/GX3N52300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee08c378228017f2790ccb8e2ae2d57236fa9db8dbb7729da7819198fc80d38f. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/GX3N52500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e61c9bea3f68f3731a5e3a832feb35ba22095e331f5f29ccf57213575178469. 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/GX3N52500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ccb5a184fad7011c4c5853b15648dd5917be8507fe7758e074e875d5903fe6. 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/GX3N52500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf079b6f6e24878267531f4e27419dfa4960886b13e6485597075059ce589d8c9. 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/GX3N52500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89eabacd3d1939471db3af63098a15235fc99ff6246c7e0c3bbe32ceff00214a. 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/GX3N52500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483f3b354f2069978f7b90db2dd9c8c04182d4afea8afd30ef9ddd5b481b0339. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:01:59Z), 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/GX3N52500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9efde9c6993f537b60d45688c6ae937292f05afcaf3e93a531cd18f17f32af. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GX3N52500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afff5394051a0914ab9509603c69a371ecfa01a23f7a7486a7fef3e701d7985. 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/GX3N52500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87a0eeabca20b982570fae703e0ea2cd47c9ac44dbde8ab8e5de1b8f4683de6. 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/GX3N52500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2023da7677de5970553b08ad91523b93236ab9aa45cd4331e1479fa94bb74ed4. 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/DEH841400326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104ba9b8315b13ef514ee72c9afc259a121a7ccb745f503bc4415923d153f565. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEH841400337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc2ccb529c0c087f7506d90a94ba159927454d65cf15abd4f9c0c4423aa0090. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEFL71501086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34a0c842481b31cc4eaca297c779aedeafe21c851185aa4d82e601f6588f638. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USA370505988.
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 0xd378193b9abe0b22597af68a407ad00325a2288217cf51ebae07a4e165d46086. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DEH841400325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a53d945186a239c59678306146db6a5c226007018ec81a30c62fb183d1fffe5. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USA560861183.