Shudder to Think is an American rock band from Washington, D.C., formed in 1986. They released three albums on the D.C.–based label Dischord Records, and two on Epic Records. Their early work was larg
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 0x9d9a851236bbee063148c271bd0e3ea1586e29e99c0a8e67ba78d96412083785. 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/c7b13035-0592-43b3-bea6-791e3e69b44d.json and https://artists.proofprofile.net/proofs/artist/c7b13035-0592-43b3-bea6-791e3e69b44d.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 0x2cff2165e32e9f9884d04f7adbab4074879fafa599287c16db9b4e672ed30647. 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/US35U0696202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8776f44e7f8950db5d8cdd7a0a0e887a3b7556f2f5bbe02a89bb8e318b9a6ac2. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/US35U1304602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3b734d0aa05698f8718f297044d8e9074e8f272eefc27a89c2726d915fa56b. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/US35U1304603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de922a24fc68be156e14106b44bf9d732fd792d8e577ab0ec1baa1e594170f8. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/US35U1304604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c89ea631f9eae3ab9ab12a267052d4297da523ddac285033f025f7f60fe8e7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/US35U1305402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa991830005a70da2573436a8a0e82a9a1a6265bffeafc72b688fb3931274fa66. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/US35U1305403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf049d4b42842714764b51686fdb7d9a66c3ac5a2a3a417cfe7d0d4c9db6ee61e. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/US35U1305406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e33135d33d4649bd0cbe9e60d12285ee640b4ffa009bf05233bf6b5a61ee75. 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/US35U1305407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff569239ea2ccc83a75198cb8325f5b5a32024d47120b295fe998d5f9c91698. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/US35U0406701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078f93eee43bed776a35edeef343424f323237e9643b7649c3061f2036a3dcf2. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/US35U0406702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986ac1ca296aef3e0b98b6920485db2d3f6fd1f6e72871694f34ae047f10eb5e. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/US35U0406703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a9984fbdbace8334d3d3c4614e9469969d55390409bc746b4085e0693ef8d5. 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/US35U0406704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbd52427e1d0f733f09dddb0df22a2d5db6181ae88b92ac9c483585e5250b29. 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/US35U0406705.
Pony Express Record (30th Anniversary Edition) [Deluxe]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b89e9f3e35274db2d56effee2402a902605cbedfe3c50f52c3a3aa2ad9e3993. 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/USSM10022127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6e09ad620fd3c4cea9bb0dfbd18dbf56cb42eb95a3af2c8e3eb8a8a629e6a4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USSM10022128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab3292dd463844d7baaedc0f8c894b8b4662d307616b14a9706964f920eef15. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/USSM10024539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b89e9f3e35274db2d56effee2402a902605cbedfe3c50f52c3a3aa2ad9e3993. 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/USSM10022127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6e09ad620fd3c4cea9bb0dfbd18dbf56cb42eb95a3af2c8e3eb8a8a629e6a4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USSM10022128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602d54131c69e27116d9198d6b08d7b70cf1cc08986f36d7fcb2842e87785bad. 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/USSM10022129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d683c405ea90f9b4c871b15370038817721257c993d26e976f97647cec9bcb. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/USSM10022130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa962881e50675cd0c5323554079a1eecae1cfd645818eea68d7863f64be0e68e. 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/USSM10022124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9099792c360bf90c1ce5045e6f6c8fa6356e74a60a6b2d32e4af5eca0f9c77f9. 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/USSM10022125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8a5a73d9194891ce15c9253b3f03a39b2ef3e0677aff156f36fff7dcfd8458. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USSM10022126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4608a41b187463e427a2acdb8fd6993d038916fcb33bed6d4ac6b8972c4ffc. 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/USSM10022119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad08469a15cff864d83642841a3e43ce79f257c7bbed95530a065e3827bb1cb7. 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/USSM10022120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d0b641235a22bca9fb5ec462d6a6a79af121844c1668458f3fb79eda82d77d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USSM19400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02dafaf77aca04835c4f13f8145468e062d1ec44146fc8197c50ecd8fe3f663. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USSM19603994.
High Art : Music From The Motion Picture
First Love, Last Rites Music From The Motion Picture
Appalachian Lullaby (feat. Nina Persson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd55ea5f5135b9f9dcf81525178b905d972cfaa5dc696669ffa3d15c7176e9ba. 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/USSM19703582.
20 Years of Dischord (Rare and Unreleased)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952b0a4904e6466541463cbe831ad914f7d4bb9be937afedf1d46ecbaadbad63. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/US35U0912521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988182e50d404f8f67486f58d29272513d6509022dcaac9c342015ca39e9497f. 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/US35U0803216.