Drop Nineteens is an American shoegaze band from Boston, Massachusetts, formed in 1990. The band was formed by Boston University classmates Greg Ackell (vocals, guitar) and Chris Roof (drums), who rec
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a346b4b7e4b738b611c5953fcf66659e9c403645b66dfe82ee49bacf7f7367. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f0cbd4f-877f-457e-b5c6-17f7fe3702ac.json and https://artists.proofprofile.net/proofs/artist/9f0cbd4f-877f-457e-b5c6-17f7fe3702ac.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee741426cae1433b495f2c32e170790fca3119b1bc6559c2444b2ecca35ca9eb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM3862314604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68a2f8fb335f4285af4f1c23ed8eadd858bc8e2be28ba245e9b5d5b9f447447. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCN39300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8e6ebe78edc7a4640f1a2cc4801537079409e6dab55842b738bc3986998746. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCN39300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dc958d7266fc506816d2d4a2c18f748bdffbeeb570e687ff674441fb8650e1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USCN30800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b71979dcfb4751b2096e699ef747c81991938d9e3c471a702cda082af0157d3. 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/USCN30800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ccd4e0750251e1db71b2ec992d1b2207cc0b4ae9a61fbbb08301525be1a28c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USCN30800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92240b1ac0b51e8344d2a52a9a6148972d5e412a0ccc8bccb821da46c35dfc3f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USCN30800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb571c81fd240a8f1afbd47bd32b04622893ffa12afbdb44d62e7dfff46220b2d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USCN30800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac45f12272e4eb8eb60c7e87f43d9e3e64f815e64af5dd6aad4f84c303a336cc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCN30800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2088e2a0b63abe6a0f7c5740f08e6db9b2130c1c9fb050fc233e03dbf8a0a2da. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCN30800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a86e232680e11dc5428956350deaa0b36a7562500c674f81614b8c631498cb0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USCN30800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a29cc61d969cd8abdc1f73e2467c67b94635f1e2188ea1a53020e8bbb911f9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USCN30800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93adeb7af339ddd2c280c4e747be08b874d06d872f75f20b22f2a7216c5d1c7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM3862415511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7fdd242b8e1c005757f1401338c494002bfc33f8b53bb9f3d0af87fbb71161. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCN30900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbcfc618ee6f805d320f1c6efa1281706754e6ef67604dff9994539ff253f50. 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/USCN30900004.