Decima Victima () was a band formed by two Swedes and two Spaniards. During their short career between 1981 and 1984 they released two LPs, a maxisingle, two EPs and three singles. History Early y
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 0xcef1df5ecc045d4e7bbccb92c8c569184b5f198cffc349c49a17796658a9c5c8. 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/6a91ff1d-09f5-4447-b9ce-a959445b61d8.json and https://artists.proofprofile.net/proofs/artist/6a91ff1d-09f5-4447-b9ce-a959445b61d8.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 0x54ba8be70b321edbc9ba09b668b02cf72ba05cc02089335bb055ab7251d30927. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QM6MZ1550439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8364d1fdf788b00166837757de80c0c5990ced2eacb8018f70e1b3c3a451673f. 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/QM6MZ1550441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2287663a3f522b13d7ed5a1f0384f9b9eb07134480e7e89c2820ad832bc348. 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/QM6MZ1550444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb331f3cd8fa50eb16f8be4f99bb2664e2c7ab7fbda7ed86308bdafd252d3eefb. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QM6MZ1550446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2c9bed7e409866c47cae5196c6c8050cd7d65c4ecb641e8c85c924eb3721fc. 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/QM6MZ1550449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8dd662085271a72dfcae8abf4a5032dcc90449584dfd7821e5230f36d09328. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/ES8582000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bb9009e196718d8b7e2a569c2ed319d32ce9da0d1aaf43c2c9554884d19f37. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T05:21:06Z), 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/ES8582000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2001c030fd6ef42488707293a8171d6f560f32905e551f91f311303b19f0b72. 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/ES8582000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76febb3fc2ec47724703459987ded87bc6b3e48d3b4e84899da737b68c9e4a4c. 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/ES8582000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319d380c3e912b7c8821c790b624ceb2839eb17d85763938233c93e5e03a0458. 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/ES8582000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6e9bfd7950c7c9a9b2cbaf0b3c9c23b379f43078077241b26cf7a31e4abf01. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/ES8582000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa035bf15bf6109bfa63465197c03001581dcc661d443248f8b8a57d6def34e5a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/ES8582000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c95cd539a5ae16765c8a9c401137429ada9fdf3a5b1e1434f32cfeed25d859. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/ES8582000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dea880612d8380b655776f4fb07efeddb4be837ecf14f621a219f4bef42ae1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES8582000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4774e5468363e9da100e0c12260c7ea1412b6e6fadcf00abfdcfd5fde405e1. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/ES8582000027.