Holly Brook Hafermann (born February 23, 1986), known professionally as Skylar Grey, is an American singer, songwriter, and record producer. In 2004, Grey signed a publishing deal with Universal Music
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 0x5e0fa6ad0428ce23aee7a21a59463ffd470c537071a7a7441e0a4ce0e38f505f. 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/8b8e0858-1077-4ef5-8ec5-608ccbf0e316.json and https://artists.proofprofile.net/proofs/artist/8b8e0858-1077-4ef5-8ec5-608ccbf0e316.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Last One Standing (feat. Polo G, Mozzy & Eminem) [From Venom: Let There Be Carnage]
Last One Standing (feat. Polo G, Mozzy & Eminem) - From Venom: Let There Be Carnage
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 0xed523f45a63d385bf3ce5791962926534d71b44c020733fa0e5713cae11aa492. 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/USUM72118408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf586a596b216dd4eb1f04cd31184473a7d64ecb07823e9eee2cbfd9028ddfe21. 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/USUG12105252.
Shot Me Down (feat. Skylar Grey) - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98752e57ff1ce79094f9d27f908ed8219694e33c3f736bbad5da423c7ebcd94. 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/GB28K1400001.
From the Ashes - Jessica Audiffred Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9a09fa0fe9fdee1e74a70d71aa532c7d70673ab7a06860a89458cbfb39ed00. 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/USWB12305596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cc5a7409accb31648d94b361081993fcdedae6af12e7dc1f3f6af17e14795f. 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/USCM51400355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cc5a7409accb31648d94b361081993fcdedae6af12e7dc1f3f6af17e14795f. 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/USCM51400355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29abd386c5daf1d691e9eab017f18eb2bbde7e6131d32b252da06b5bb0dc54a. 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/GB28K1400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dd5294993126a26538baada5f3601a2a34db7870164e8c7055ac0d10165f2b. 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/USWB12204800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe156ec853b695ad4e86a39f1cbe91cb45d457b20c7f8ad3c0b41aa4e340d0c99. 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/USWB12204658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dd5294993126a26538baada5f3601a2a34db7870164e8c7055ac0d10165f2b. 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/USWB12204800.
The Pinkprint (International Deluxe Explicit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa664070e2337b9f943ea5a56bfbff1150fb15886a65a84affb6de6a6d0607c55. 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/USAT21003589.
Shot Me Down (feat. Skylar Grey) - Listenin' Continuous Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba244f78ad4ea838607321d0e20ad3ebb0afa1e7dfff593a398b1165395589b. 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/GB28K1500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407cf10cfd170c17a3bfc40b92ae3ed818e7e4d9895c073e6c825f05af323f99. 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/USSM11913020.