HD may refer to: Business H-D or Harley-Davidson, a motorcycle manufacturer The Home Depot, NYSE stock symbol: HD Chemistry Hydrogen deuteride, a diatomic compound of hydrogen and deuterium
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 0x681fe0a0dbddafd0320d2e55169ebb6b35c5f461f2d04319d0b58b2b7b63a18d. 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/4d642331-e873-41ea-ae20-7d4d9c09c584.json and https://artists.proofprofile.net/proofs/artist/4d642331-e873-41ea-ae20-7d4d9c09c584.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 0x1cf470778c7b576c96cb8131c0bd59d3899fbb675920689e44be5f2c43431b7c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/USBAE1000586.
Extortion Muzik, Vol. 3: The Caution Tape
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cf666a2dd7905a59964d8726fcbc134f283fbbf202b104b9ff728fe08fed37. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/USBAE1202898.
Federal Thoughts (Kidnapping, Extortion & Corruption)
Unchained, Freedom Earned African Descent
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452184ae4d3678667e1139b7da3dbac53972f43fd82d33ae547d735fa29d6b59. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USBAE1304193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb25fd16dffa8c429e83db0d44919497379ddc97d39f44edfbc8bfe58cdb89d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USBAE1304195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecf65c4ca93176245fdb2ca40c41de43e1388f50bcbd18fd2a8ee9ff7e86737. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USBAE1304712.
Without You (feat. Lil Goofy, 6hunnit Bj & Boo Banga)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3fe93ddaff721e56457c8ff42db8df9dcfc84e4bd820971069962d09057b04. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USBAE1306200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a39a12c2e20ac42710eef529f2ae5131dd3eb38d52698119070cd99537525bd. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USBAE1314498.
Stay Ready (On Me) [feat. Young Scooter]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2341f5ca634bf1f65e5f77970568e247dbc2475bd2c151139482995e61645692. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/USBAE1320139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59f8e7cc0ebef728aa4aa7b1845a4903d08f49af79856f3c39ce597b4d88d2e. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USUYG1164600.
The Ice City Grinch That Stole Christmas (Lash Season)
Federal Thoughts 2: The People Vs. Howard D Sturghall
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07ab609adba7e22415ea278acf36c4ceafea7ad8d21b41b6a03dbc8269e2669. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/USUYG1281142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b3a69b34d248c2b61d3edb678d2c407a605e37a1169e691bf19fbaa716dc49. 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/USUYG1349662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c6a8d8451bdeac3c23cb931d9463baa75f46a4ed151cfde21a76acc9044554. 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/USBAE1202140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1aafd71d6de7f168c71219ecb03e02fb38624cd764d189e469abe0241b14de. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USBAE0901375.
Extortion Music (feat. Shady Nate, Jay Jona, HD, J. Stalin, Stevie Joe, Philthy Rich, & Mayback)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60084cd207a9977a5bd9b389b5ee137ae529d0ecb6baa9b667a5ac21c25ae50d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USBAE0901381.
Emaculate (feat. Shady Nate, HD, & Mayback)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00c2f1f505bdff216b20f8b6f1b7fc542462d17d402d5ac2c8ed3a83310b405. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USBAE0901386.
Neva Leave the House With Out My Hammer (feat. HD)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0d13560194d6db00d0d92ad160ab1bccd5d37458277c616b31f0ed8564d923. 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/USBAE0901388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03148d8841c4599fc063c5d8af28cfd4567fcd9f7b4257d4f9bd9d5e3238e17. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USBAE0901394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8366fb210f8d4ff84b12f7e1690b26e01bbff7122fb09b8b2e9e4507716f986a. 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/USBAE3369126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ecfeb9f2ef65ad86011eac52969c010006a73070dc4198a21a154ba7d9881e. 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/USBAE3369130.