Deadsquad is an Indonesian death metal band formed in 2006 in Jakarta. The band was initially started as a project by guitarist Ricky Siahaan of Seringai and Stevie Item of Andra and The Backbone, but
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 0xa98e166a7b6d6eb28a7e68cbb879bedfc3a396f1c385129ac6aeaebcb6cce065. 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/228d912c-7b83-401b-b299-48eb5904341a.json and https://artists.proofprofile.net/proofs/artist/228d912c-7b83-401b-b299-48eb5904341a.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 0xb22ad64a9943332fa97daa5354b039931d12dd3aac41a2757163982fcadc73c8. 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/USA2P2205443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c21985731ab0c952ba95e3a66d00eff43707987bfb3f258048b1d127d0f2ed. 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/USA2P2205442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51d255648f64bb99feb0f6896cb72c585380eaff1255daf78fcabf43b480855. 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/USA2P2205447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff7ad39a29ed90000f40e2d392d4e635d2ee7b19e3a25d92dae726d81982844. 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/USA2P2205448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65abbbe6d34a5335a0c0d7086bc6746c4c321e3a5bac9ca7387984a219d21f82. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2205445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e23481aeb8ed7a93b5ff3a42a343a96741dcdf135f3ed20e1283cee689b2de. 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/USA2P2205446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20542122c2cf9d9ac6e02a45aa30e63527afb8b538451eae48af38e3d600d86. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2205449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc18b6f9534b67ab81de4cb9e4a5b9c252cdc6d8880d0cc926211ad9693cb72c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2205444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e66a1a35b3eb4a8e5e9e769b8c9c4bce80bae41a579a0372dd35d6ecdd6605. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2205450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f630d1103808a9e9809cbbc3bf19518b364f13d9c457de20dd61961c69c2dd. 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/FR96X1694863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf7cdbd4eed720f07ff577428c0897260550cc78ae77fe7e26a2ab7509e4615. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR96X1694864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b35da4a59be765655385428c16b4fb7be9a7660c8f1e96c1de732535ece9b5. 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/FR96X1694865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15595c2b32956099c4571a097628801cacb85373993c5f97f992786fc5e895e5. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR96X1694866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e913aa626b4d435b18a76f3fbf3bdbca37fe076559bd57fe22928527d6144f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR96X1694867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f6b11e3b5abc81d579ac0f8373f01b5038a1e3602bd41766f03755bc0a4d85. 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/FR96X1694868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e0913b6832abcc01efcf1529ea96ae6f2d11730c16ce52c36e6e5ea0e52145. 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/FR96X1694869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfe7a8c347c460f488235bd3ddccd343a11ab37fc39f53af79df246404033ae. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR96X1694871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b7c024cf6b977ab27ed47606109d242313774732c6e2f31b87393fe14d31c2. 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/FR96X2109675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295a3a0cbeecb49fad6aba42e3464190a5adeae5c767cfcb6e02222c9e92bd12. 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/FR96X2109676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c3499cd0cba10c9a02760a12e0bc22f87f9a220883967a2b94e9e16bc66587. 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/FR96X2109677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707e3b6ca44d95f7aa8af308bb435a5e8e5784c47caa63090a064142464ce05e. 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/FR96X2109678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11701470d9a9f90c6cecc36a639c1f5c1d2fa811649128acc8dc9f7dbca7c629. 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/FR96X2109679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7396bb62571715d09bc0eb115ee1c781b7afa0eed81ccc5e7b52d6d8e80619a. 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/FR96X2109681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb20918bd88b57197e91d584eab2736e4c0c74cb17c8dd45955a4eb247f8db3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX282056278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a55cf6dd45037fde2f3aeb2d0ee78f3ffa6a6a2382fe6bb5e56b104380fecbe. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX282056279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa012da2ff7444a0f0169b8b5724684cbe95749ada63802dcbafb8bd04d82024. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX282056281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bdf2a3043044e0b3e05249853f50773eb46d273d3ac078cf02c976bae1d376. 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/FRX282056282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2503f980757ca4779a4798840ac717c8014651ac6459cada4c5a136876a323. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX282056283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62e515d86ce6a0529e05337cf1c84c7d2949ace583378d40664428ea523c3a4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX282056284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30e5de54e9321ba261bf9ed68e205171e096b28dc8223c8d219f605410a8dcf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX282056285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bec223ec3b9ed93314938fddc8bc7033e04b85fe9fad72ecccc30fa66159d2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2301028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ddc5581a80be603b24b0497966bb8ca09b3c71f0992b3074c9334634bdb269. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2229729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd779a85a1d0150639a198693b1ff2b66acb71e98ea8ef7e9e9f4ba8ca2bf5187. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRS182146942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3650d3a17b94e2a41f55c4bdcd30e5fb2ed44056b80d3bd6c47085bea704987. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2124036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2feae1358b5ef66834fc5a53eebf6474d962f9b07c461963a4998f7a7bdec024. 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/FRX762027653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82a0ba2d9fdba8f6cf1bd9f4ab5dcf9ca0525641c000d58373918c0da35c1a2. 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/QZDA41823641.