Mark Allen Slaughter (born July 4, 1964) is an American singer and guitarist and one of the founders of the glam metal band Slaughter. Career Slaughter was born in Las Vegas, Nevada, on July 4, 196
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c610653cbe81b87ad5d7f2d2c9fd55dceff76d4123bb65159b11ad72a31db64. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa619f3a-971f-4fc7-b609-870cfb871d13.json and https://artists.proofprofile.net/proofs/artist/fa619f3a-971f-4fc7-b609-870cfb871d13.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceeb9c451c2acac2db9140f47206a22a0026dd92f8ce1127873980304fcd372f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USDPS0600555.
This is Metal's Most Covered Moments of the '80s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e404262bde85461ebabaf88fb563351057c0c8ee7569b971605ade29daa1a10. 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/USA370675276.
Fly To The Angels - Acoustic Version / 2003 Digital Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f18b9c04c3b684de947d7c7c299ff104d1c3b1efeab05edea7a3783780bb2fa. 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/USCH30300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6bd3d4bc0f8923150a6747401122d1b592000c1cdc6e2ec270fd2f862a9546. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USCH30300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c0ae4bb49d2deacb52c8d04dac7dae883db911626e6d9054c956624a17d0cd. 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/USCA20702297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84dae7f194cca325b7f4be5e0d6ff35b6361c9342da37b30c2d33f33436c586f. 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/USCA20702300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660882dc62472b1b4d1a7b000d923013980e33b734285f3fda4906c805bfe87f. 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/USCA20702298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93782509ac8437aaedf576d6b818fd71eaaa8d9901b6240aa4dcc926a13cc85f. 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/USCA20702284.
A Salute To Ozzy Osbourne & Black Sabbath
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca1d4f2fe20ac9996b281c89f2706c75f6809b082db49413d62d033866b91e5. 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/USA561040134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1478f2c1cfab239df70af77787035f1e37b314abef85ba749e8eed9d9876389e. 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/USA370576129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11202bfe4e63caebad968441af52e219f715efab90f0c62a0f2c7ad0ac565033. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QM6XS1807534.
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
Numbers From The Beast: An All-Star Tribute To Iron Maiden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1f34b3659dfa922c6b2cf8f9e5bdfb3c686d55641583511a8b0b7dd7d36571. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USRY20517265.
Tribute to Aerosmith: Not the Same Old Song and Dance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c204116bbb8af468858a883709f678ccf212c5032f67efeaa995c759a438710. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USA370657397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96652aef9a7d7c9526d3a851d0bf544f9b48e5bee8541a3d1f866b06abeca8f. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USA370660519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdf45105d32528559e1733317aa7dc84723bce5153a38ff8c975ef63670219a. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/US78S0501007.