Unwound () is an American noise rock/post-hardcore band formed in 1988 in Tumwater and Olympia, Washington. It presently consists of vocalist-guitarist Justin Trosper, bassist Jared Warren, drummer Sa
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 0x292cd30703b4d7939a2aa987818b9e9018318c27c6a89a16f21e7d5ade86a01b. 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/09ccce50-7255-4ca8-bb59-6c5755bf2c30.json and https://artists.proofprofile.net/proofs/artist/09ccce50-7255-4ca8-bb59-6c5755bf2c30.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
International Pop Underground Convention
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 0x50f73023eb8b5820b4c47ecbc5dc5d13d61e621701ec2b94d7e198ea085ba515. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USCW61201021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637287f21a7231cc54fddb2e2cc20ea57b4c1bbf913ef9b6b978dbdaf3f94927. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/USCW61201034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836e3f832bd7ed5e79f2d08f7d1151a3d84e4669571881abb4c6adf68141950e. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USCW61201036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ac90e673ac3b0131ca9223315a088e2243d361d761fa3f9ec8cb550bc2528d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USCW61201037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4900540f6fc3109a4b2b894265524f8d508daa104eda67708844d4835d9d3f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USCW61201038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b91bb0bf23fac5745717d2cebb88e11730185f6936d39cf582e8fb1a3a24857. 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/USCW61201039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6fb37838c890e433a91d2b2b9fcd82250f1083f855be576841c93fb7bd163d. 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/USCW61201041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac73a877097321a755c4d87db3dc65cf0fcbd16e4dbc126be8a401e908ede63. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USCW61201042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b4928f8de5bda47f1983ae4a57e904d06e4ff50cc9aa1dd484e1929ad04d05. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/USCW61201043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d95bc60528f9961c025be29d8849ba777431c52f99344a60c7382c29bc542fa. 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/USCW61201044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d93bca372e4484ed8012ffec5810355ae6acb697ea4f73171f4188590b3ceb2. 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/USCW61201045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bdd6bdbae782694f36fa3aecf1e2766e3cd3d1bd438a5709dfdd162c9d7f24. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/USCW61201046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a788eb6804f0c23a28db78508d5fec8d2a6e5b1385e20b19084c565e4c6358. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/USCW61201048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa18514a148921cd96ef549172a6cf867c0208db5bd478d126dc6df6bb11997. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USCW61201102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9b18bb94929efcafe19ff6b41161cc8b4c33ae0992e7e7b6c909cd399c30e9. 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/USCW61201103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7faadf5f8967ee347356bcb4f95ea998429a3ec3178279e7c828662e337b3f. 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/USCW61201104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5afd33df743d5fec0ff127c4565f0a8052be35f2e85550408783053181f73c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USCW61201105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500c8a6475ecdcb6e0a904a4faffd633415c2bf34645a94b0905f7faa1f08847. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USCW61201106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e128a774b09fbbc19772acfcd6790b5a7a65d6d5c6c559f09f2b7cf40cafacd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USCW61201107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c6ce4d7c55f33ef5a354bf7f4651df44f5fd3b999382f957b111aa38a9196f. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USCW61201108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8439dcc46c371ebd937412223441a95e74b43a4c513d93d89b8a774c5610b3d. 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/USCW61201109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b33dc11c890ab2da2f88da08238b7a9c43d7314936dc275a4b495d67e46b46. 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/USCW61201110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430d4448976e431c14654f83d77465d13a415021b04e061c3aebe2e5044ff27a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USCW61201111.
The Light At The End Of The Tunnel Is A Train
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40784ae8eaf3a0c2585ccf1a7e9ef6544d18eaaaa3286cb30b384500b39453a9. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USCW61201061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe005fb57f67398fcf2a2dc8e53fcf5c47a9a34928e719eb1caa9fa16de3a0539. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USCW61201062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9511d32ccb8bcb235ca4557813668ab8b604660b2bd96dcaa91c7d5bc9958e22. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/USCW61201063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cb235a62a2e588760a543084ef50411e5ed25d82cf49b276ae903adba2c37d. 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/USCW61201064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05896bdf715b3bca1c93874ed6ac8868d7544f719868532c6022db4f66daeaa. 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/USCW61201065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb593965362553ca6573c926217723d4257a1318778250991518213c80f505db3. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USCW61201066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897121abbd51041b3a187768623b2742b8cef7450a0c20a385849df542f3777f. 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/USCW61201067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dc851c0817dec02550dd7d1ae6cfb9084bef8554ea175a1f4deb4a6cf72b40. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USCW61201068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d1fbec8c6489ffecf1774d92df4fa660fb54a19021a50935c575ae8f2f6ad8. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/USCW61201069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618fdca2881625bed78b8d98d682ad875ebee1281d6f244980636d2295392692. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/USCW61300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fbe1f315855c17c8451e0d662e73ba52a4bed440b482eaba04c03551c8403f. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USCW61202535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf34954c14c9b9cb999e848fb942edd3b57ea383b1ca3eb3372fdf226fd13e8c. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/USCW61201097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea617ddd430e0daf188f5542bcb67e739404885007bdc43bb3dea9f4a4fa8db2. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USCW61201101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6498f75977e587336d0d1dcccb0c1a5cbd51963317438661aacc504b17608642. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/USCW61201090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb330cda557d53a9669eea35fda79832cc2e76fa61dcb392be52e3e9776665aca. 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/USCW61201089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed127a60919f3741bfde917d129f698efa909e6daadb78bda6544d2cf6d2e51c. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USCW62473603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc271f3574925f54763be478aaaa99b7fdf4f189d5a667e20aaeed27f17c94164. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USKRS0320105.