Blood Stain Child (stylised as BLOOD STAIN CHILD) is a Japanese melodic death metal band from the city of Osaka. The band's musical style combines melodic death metal with electronic and trance. The b
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 0xe7b11ffe74c61f7f06af108e9d64986e87dbc5a9eaca7212db31845016d63a52. 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/dbb38cca-a794-44e5-ae37-c4da4d6f1124.json and https://artists.proofprofile.net/proofs/artist/dbb38cca-a794-44e5-ae37-c4da4d6f1124.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 0xfd4a149833ab76f77955f93661da027c40e78e5d1279bb9847d440a9088c68a8. 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/JPZ922402126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39b2cd0121140feb0f7b424fa5858e0eb41ba06cd77a82b0ff6d12b6a864572. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:05:13Z), 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/JPV751901238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5a3be07c38b6b604813ac32e5c7622787cce663498a8825beb6149f50eea31. 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/JPV751901240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f06be28384dbd7b8dc2df238e80cbdcb39460831a196d74eab6166a0dcb2923. 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/ITY101114001.
Forever Free (feat. Ettore Rigotti & Claudio Ravinale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a25a79085a7c53a654762a8f1296288b045fea38ab398d6b426a331f959d44. 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/ITY101114002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacd30f3bcdd92a39dd9fcb31210b6982a096ecba0aab463ceb4757f48b13e9c. 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/ITY101114003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89dce80f1b708631863eec6a96f4b7500e2e55f59a4c035374f1ecc31021c25. 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/ITY101114004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0036d9cb5441a2ff383a221713b0e6f58e0905d88c7e12dad2d8aaaa7a72e1ce. 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/ITY101114005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1dbc41a9efe7a18c2fa57c855711fa25e564efcbaf7e64b109fe5410e082c83. 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/ITY101114006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03afb89c4972c1bb8c89ba4ce1754d3ade4d95446bd2d8672730348f5ea893e2. 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/ITY101114007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddffb26e617de273cc22218fd02d4ac431180634471dfdb34834f48122bb4b35. 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/ITY101114008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a1ba6df2cd02aea67d4defa3ccc2f6de34d1cc6786fcd000c32417310454dd. 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/ITY101114009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c2cfe087afdab119f56c2ec9fbf32a5f0c98cb6a76f7c63b92abba18c9d781. 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/ITY101114010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43ba7640ca77e522e3b00f5258c105df49bcb4c9b89cf08cd6cce46bb9bfdee. 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/ITY101114011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda72b584b5bd22e0adecfb8b0b897b275eb05dda060a3443e10b80293146ace7. 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/ITY101114012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815fbc329925dbe0d183b07cc8bf0b0963956ef8b1195a5048bf7c774c3fff39. 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/JPI700729001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7bc406eb36a8f4c624a448a49b33936151a4c014c2678fca0cfd6265eec7c3. 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/JPI700729002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0b2156bc8a18ae21e0cc5c213e512e6003b7455d0dae8a651a39f7b5fdc2ea. 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/JPI700729003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ed78aeefe66ee1f54fc994355d8f9cdbd6426d4d0fe762ab92814550b7a176. 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/JPI700729005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24d4527ee7c4344892bcd932b79e05640514090d2bf72681af18c8dea462e6d. 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/JPI700729006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b31445b7944dab66ed42a57951b23e6aceecfb665778fd7c1c4ca55eabe43be. 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/JPI700729007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702bdaa19e437a6e6aa08324523d634093f3bf8ef28e53710d33e5cb85e8c586. 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/JPI700729008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820d9695d7728259f55dc36908530408de9c9fd3fb0fd05a60d735d3143437c3. 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/JPI700729009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51bcaf01354f60e8a0c75f8b525a1e870dddeaa87bb5c2cc8d2e7549bf67950. 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/JPI700729010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7635229f2e9cd5760bf2cc5c1b8ad3ddf51339becc4a84d399364b3872a01c12. 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/JPI700729011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0c41e44b9e8d6b5c5cc806894d09c2f408ff3d6fba56ce8b0ce160fa3b0eb0. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/JPI700729012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d5152cd3e5d475dbdd2d4bc78795f1875c879ad1c29fdea0d862c2a804a9ad. 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/JPI700523001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3041d023ad91647e5138defb1401187d69c6edf8a8df50f0820c157812b2c3. 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/JPI700523003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0faf5861b1f1652d72fcb95613bffd3205b29531ac8b40d302fe3abda0a36b87. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/JPI700523004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f7f25c2bcdcc3c96d01cc889d076bdde3a5741639b48a540d6572aea1599a3. 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/JPI700523005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44847be17483d2c320bf2fc7e6709c632ee5f87e3e562cd7f659e201cd79c359. 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/JPI700523008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6aeb805575288df3e38992377fe21b17b1cc9093cb830c85146bfcad0ae800c. 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/JPZ922100696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc0489097c4ee59de9281109d43aecc62c753d0bf2a023d94fedecc8a41f580. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:21:31Z), 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/JPP321700165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5413f3103f4b6dd3be57262c89a24fec8d86791113412bb548297645df04a43. 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/JPI101303069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3748192d42f86c97d5fec403e9757ed7013ba864820749322a8206a9930aecbb. 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/JPI101303068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1510d8e7c2cba81d6fd2b2845cb57e9056015f6bb81cd7280761f3beeaecf5a3. 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/JPI101303070.