Nikki Stringfield (born 1990) is an American heavy metal musician. She is the current guitarist for The Iron Maidens and Heaven Below, as well as the former guitarist for Femme Fatale and Before the
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 0xfa7da15a4802329a835b80505131602eeb1e735f3a6c36e9bf1c14b191fae96b. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a354c9f-f516-40ca-b05c-48b41a55aa74.json and https://artists.proofprofile.net/proofs/artist/1a354c9f-f516-40ca-b05c-48b41a55aa74.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 0x8ac7bd3167fd3cbab97de1342c95f8c1c5886456c9e96b42fa15d0ebf6931bdc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USMH92302062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095c6d5a5fa3d6e04462288766538fdc613b9acb609aafa5e354260eeae3e98b. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USMH92302063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeca345ff6f436596117c56bd8f4b04abca2b7bd8546e881eb149c2462ff1e20. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USMH92302064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd89f42bf5003ab99506f6eaff57dd941387d7e5e6bc1331835f31dedf007c5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USMH92302065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7812d9c719dd5a0214994120e83c8449ed6b401e68cacda720dc92f5fea13c7e. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USMH92302066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1529754965e85ea675422c689366f50464eba6c31975b4c3342fbb31a04bfa7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USMH92302067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f749068f2ca1e6a0e2e15482a047539dc014a5189a6b8139547ef9cc2e6ac9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USMH92302068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208cffb1e4738bbc8aabbe425527adddb3d85d50ab53022f10cd76e8c4199ef8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USMH92302069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e15127aa899e3a583bcd51ea4cba5073aebbd02d9694614d8cd8e58dd9026b8. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USMH92302072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4a40b2fe59da975113285f229f6abf202b959bef11b3cd370abc51e9bbaca1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USL4Q2298735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dea002a8ea524df42b404da7161c800900ff7d3325147f7e071813a5e706ad2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USL4Q2298744.
Harmonies for the Haunted (Bonus Tracks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f9feb033c022194d62d5471e3700bf9cc4698bb30de70eb01ac81e98fc3865. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMR7T1910006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e9e1ff9b12af09f3714c5a05926e9f5d258d7cb473bb92d26011ddedd93e44. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMR7T1910001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312c775904c65408f9b34b8e2c37d39dc52a98e11a70b4069715f28f9c4163e0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMR7T1910002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f855ce9dfd87becf055931cf0eab789c91131a56c8347418207361ef670cd11. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMR7T1910003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc025724827ccf69af4b108f024936773940dc52e6c2770361caeaeea789ca55f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QMR7T1910004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a16551cf1e7ac2069e5e496c884c1fe3eff40498dcdcb5273dcd8387c4b2d0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMR7T1910005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0eb0b9bd1f897bd04daa851fd0955330cd39681cd3fcdaa94772da203e806c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USHM81776401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6284dd86b7559906ea265bfe7651ae6a8ffbf5daffde4c7ee64cf5e616bf16bb. 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/USDY41732232.
Kari Wahlgren Presents: SlaughtHER Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601b20224435171005558bd7ebe174b0d6cb4c5e3ebcae2529dff1e52c8a2884. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/SMLG22517001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b22e6c927d91b98d07b12b72cd01ff77b18e065e5f770a9ee337fdb759ad699. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/SMLG22517003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7459290794c2e175417571c1a15f8fd1355623db957d5e33f3a900be357a8cba. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/SMLG22517008.