The Colosseum ( ; ) is an elliptical amphitheatre in the centre of the city of Rome, Italy, just east of the Roman Forum. It is the largest ancient amphitheatre ever built, and is the largest standin
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 0x112dce22003e76af7948383fe1fd86ae04f97fb51e6bda62b1302bc69e8d7e95. 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/c1c30375-4ac9-479b-9c24-e1c6ed9b34a4.json and https://artists.proofprofile.net/proofs/artist/c1c30375-4ac9-479b-9c24-e1c6ed9b34a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Those Who Are About To Die We Salute You
Those Who Are About To Die We Salute You (Expanded Deluxe Edition)
Valentyne Suite (Deluxe Expanded Edition)
Those Who Are About To Die We Salute You (Expanded version)
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 0x185b49a45a60801e2cc2bde525b31e53b52509aec74c9af05fa730ec290b084b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/GBAJE7100905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8d3fd5cbcd157a43f249643541a21f39e7fa39e53cb3b2354bdd56e723ccf0. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GBAJE6901026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15df753b7c6ff116873e69a272e00c13a2272a70c2f18c8379bef8dadc90c86a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBAJE7001031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed59e6dcce83424275ad6632afa12951586169ab50366bf9f0be8bf6693a4c8. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/GBAJE7001032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7aa6ad8381d5236a6849d41ad730dce9d99752c80728114af51dbeb5a685f9. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/GBAJE7001033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5085e29c6860b45a3825236e78b318703d45ac9dbff19248b7408acac4112c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GBAJE7001034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c21a229818bc15235b73c44505fc96bca076856ce673cef9e20ce30d2ddbf06. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/GBAJE7000948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368ca27c4b4471024109011c856598185c08d0dcded5807ded7d0e962cf563c8. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GBAJE7001036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cc719c3abe7e976e8f405eb7f8a9ef9192ce4afd48b4d887d5d757e35e9354. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBAJE7100779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bb982db28259894f516ed332305873f7e0e18ec386cd4cc2581643ece6d616. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GBAJE7100901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d8c30f3f3b9e14e4729b369b7ba4ec46548befc4b3190553243d5fe27be44c. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GBAJE7100902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4aa6ae6aee2cbd82322ac33e3eb83fc25033872ab4ff9a2baf743c9bbb1be0. 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/GBAJE7100903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa194d1ab0e0de47cb92201f0a2e83965b1f9e18b16f0766682702925dd2653d9. 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/GBAJE7100904.
Lost Angeles (Live: BBC Top Gear Broadcast 22/11/69)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d25f228976f0b4a61d1e83330bbc90744ad9c4d9319a361325fd057ac5a670. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/GBUM70800984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11853946908abacac5d5e86768f84c5b02cbf1c9dbc3c054e6c41aaf687fb7a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/GBAJE7100906.
Those Who Are About to Die We Salute You (Expanded Edition)
Those Who Are About to Die We Salute You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f7c2ad739e0c8e3196a5e0bafb983d735255f7f9109e01c75b2ba6be876878. 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/GBAJE6900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5339005c10e6c2ece0428a62cd7c4b880e86e7a799c15ec5cea1fa222af8ebce. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/DED461900212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90689dca8ba97c84c95fe3c4d00f6eea455998bfc3b3b5b2e21274cf67b3355a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/DED462200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d41136f30dd614ff760f2513f7479b7c890abb9c5496eee6327bcd367809d9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DED462200162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaac1b0cb67127519d04597b14812fda0ce9dc436d6c9d60cf520016f905192c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBAJE6900072.