The Six Parts Seven is an American post-rock band from Kent, Ohio. The band was founded in 1995 by brothers Allen and Jay Karpinski (playing guitar and drums, respectively), who had earlier played wit
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 0x4de4282257a0df53db24050e53a68db804c69d367a2847ae8a8e7109751b8792. 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/5144d26d-a8d3-4da1-93e7-6e88c417c6ce.json and https://artists.proofprofile.net/proofs/artist/5144d26d-a8d3-4da1-93e7-6e88c417c6ce.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 0x4821e7d20d6f94d392aff148d637652892e9da4e2fc34ea7ec3d98e1d2e98d39. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US33X0401801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ece86a90694131c63f1f210a13586eb891ca14e1293c112ad0c892b270001c. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/US33X0401802.
Seems Like Most Everything Used To Be Something Else
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8868b1253febcbe452049d5c22a6bcc45bd4eae615bdf403911c56a6856c46c5. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/US33X0401806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cd1968469cb392eccac8de527832b526a50c04d77a093892b9174131ecbd49. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/US33X0403002.
From California To Houston, On Lightspeed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618481eab501a1c609c3fc4edd9d97b5117234d4440649e8c70bad917d714d81. 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/US33X0403003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e7381a377d99261b7b1956b2ed993b4e1399b3f34451e313cf883a27d336be. 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/US33X0404002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486552df7e0c2cc1fb592e6de0f0abab7829d86637a085f3bc93b9a4d7024c28. 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/US33X0404004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2b040cfb0be33fa7f28aeb8d5335e8d772668196f8ea1b0c3fd567661b8641. 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/US33X0404007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b59121da137b75468c4a8fda2e73e88e3a40aa1f7f9b8625678e62455ebab15. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/US33X0404008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c53f7038f52c18fdec04da56cb296b19fcc6011af1584a832161cdf3db1354. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/US33X0705203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb650ba9567d0641427147a9185cf3c9322851ff4e6447dce9b3ec5cd5e27086d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/US33X0705204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbd8b452b2a710d1a9ef6beba87c261764d4e8d503b58e5dbcf25dcddff677f. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/US33X0705205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b1ec2d399a635eda5c2b06eaa0610a7c80c86ab7ea29077262bcd4c79566fc. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/US33X0705206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73f821e03f9575ebe45de113c15610d56cbe8fb4dc195ece13164e67c94319d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US33X0705207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca0672daaf40c6611b31582ef32bc1ee65854494f33f7082c0ea88203563529. 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/US33X0705208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695d0b5e2b1fd7dc043b9e315e0dc2dbd488fc046afc602ee65488f574132979. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/US33X0605014.