Doomriders is an American stoner/sludge metal band from Boston, Massachusetts. The band has released three albums on Deathwish, Inc. The band's vocalist/guitarist Nate Newton also plays bass in Conver
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 0x09f9a6adc6a27207856197ce32992db1f275fedb3c56a758486c2d92fedd368f. 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/094879ec-6532-43ca-a75c-1ec17c41ec87.json and https://artists.proofprofile.net/proofs/artist/094879ec-6532-43ca-a75c-1ec17c41ec87.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 0xb5a64bd594179eab1607f7e8f35b23496a0402bf1898f5eeefe35142c2095c3f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US6620500297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339cf72b3da5ac3479a33a50df878db9555bf653597bc04fe1cd80cd96d6a30a. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/US6620500299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc636a980540d3a248f644b4de71f50443a3bc3671fd3a8ea62cf42692b154514. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US6620500300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7e4a5ee21e803a85c96709b7abd02be53f07062a97174cf227ed8716ba1388. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USHTV0910203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93eadb4f083d1bdbe44774d37427e3b7d4aa429c1b9ba754c81b9ae2b6d044c1. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USHTV0910204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930b49fd0d94033ae3d39f5a8d6d43df65fd5ac82cc214aeee50c739173c4842. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHTV0910205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c16ef0d603cd53b27b87d19bfbc4c5a80fd2afd5775d1ebecb2a5865f0ae34. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHTV0910207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bac2895b5e7e65c4faac1d43d4706a92f802dc619201bbe3d53eb761889accd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USHTV0910208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038d2d00c73be559e01010b435e98867222a8ad27fb6b1102128b49afc88ac31. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USHTV0910209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa300902213a24a0958a1a9bb2031c08f5b02c5ab2f5ceaae7913ce172f587888. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHTV0910212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415f007e1a57585781492e6b537cad4fafbf3b37a5d07025f0e9b3b8a03b9c90. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHTV0910215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcae71e4401fc9071ef70bba996abb90bfb81850cddca17499d7ac56b90e4cc7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USV351385618.