Disco Ensemble was a Finnish post-hardcore/alternative rock band, originating from the small town of Ulvila. They have been noted for their energetic sound and rhythm, original guitar riffs and electr
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 0x300ab0c1f54515a96b7ba0171561dbabe6fd442ece8ead440b75d4284bef3a97. 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/74af21b3-0180-42bc-b873-acc9832639bd.json and https://artists.proofprofile.net/proofs/artist/74af21b3-0180-42bc-b873-acc9832639bd.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 0x9b3d3ae6f69da7fe97c7feeabf396ddffb9ca81e09b4815d443438307cf18914. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/FIL9W0300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8387a43a770c73cb85d5e536543817180e09500c4c976a7c16c1104078906f. 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/FIL9W0300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7684d21957883da2c3b68b4da1dddb55f8667d55477aa646f4d17a120c766c21. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/FIFR50600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993477af6b4256e97b412143070648099810255ea6d395c62449e4f8dfc93c7a. 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/FIFR50600083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a91a34989c838623071d84f2b12e089364dabae1af25b35bad3a763d260acf8. 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/FIFR50600082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7684d21957883da2c3b68b4da1dddb55f8667d55477aa646f4d17a120c766c21. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/FIFR50600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03436506c764e710fa8cdaca4c56fcc5cb0c06a50658e8ab8788c08e1251ffe. 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/FIFR50600085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec60f1419543f447aa730d2d898e6beb1df19ae854768d47c4ccb8ec841e6ac. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/FIFR50600086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399682ec09d5d10db1f8cb03de5c3d186ee2996b5f7f9807ad9cc6e9e748db0f. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/FIFR50600087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa406ee32d6f60f7d64a9e624740e555e2284f51fe9fe13477b0c746fad36df. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FIFR50600088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f57cee23f078812f10daf4938b79a2466ecbfb7a70974ff67d2f8788cc37156. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FIFR50600089.
Magic Recoveries (Bonus Interview Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f80dafcdb552a767de080f40defd2b82cc76fb7a29fcbab43d8f73e8bacf464. 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/DEUM70801469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b30611723003d0868af139810adebce818c40ff68a1d5b2b43536ef98768d9. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEUM70801464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6425aa2c25e9c4dcf3f92d22160db1740339a80ff7f373ee9bfa90993219c8b6. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEUM70801465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0404c99c07fa5e4f45d8d4dd17e76a59d6df29679897b3637dbb9806a95ca82. 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/DEUM70801468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f80dafcdb552a767de080f40defd2b82cc76fb7a29fcbab43d8f73e8bacf464. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEUM70801469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac76b06dc29915b25a477bfda36c04b8cface69ee3af1c949263018e07a9ad6. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEUM70801471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04aac740fc3d68808fc53a3d16b016af97dfa7d3481f0533ee9c349ed1f4164d. 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/FIFR50800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b62dea5d12ff3f06b01aa691cc1eeb3e555340e893ebd6f859ebdbd84b40335. 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/FIFR51000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8152c03465a221ac93da488ee9fca5514249555c110b19ddac3af61daff15877. 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/FIFR51000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cc3f567cbccf3e8e6b40e22b6621895233e0727f58a0bc0ae84b3c1f1c9be9. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FIFR51000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4de20ce7f484fbd8c6a9284b804ed93e182ab6185fdbdb41d4ae58c20e320e. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FIFR51000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4eb09be88e5e79969754959edcf41cf388a2c600c0edb47b0aa88fe326ffd10. 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/FIFR51000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800259e235ee5801f4845256cf746865430a4594d86762136472d7baf34725be. 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/FIFR51000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c953c7037793f5a4b25af62d38848b3d638bd7a49afe8a0a920beefa25c0584. 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/FIBAR1200180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8843f6145b81fdf9d2b553701a975f89649cd47553ad5f92b4b2e6c1ef93881b. 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/FIBAR1200182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6135012a769f63fd10c2355dc0fbffa1b2ab183660f78c16edaaed37a1ff55e9. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/FIBAR1200183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae9845c908763adcc3bf2cbd56440e173359baad416b0c65b2c6c509d44095f. 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/FIBAR1200185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711912a1c462d735fdf9071f9e4767301afac78bda37a39714ea1284d991ccb1. 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/FIBAR1200179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932c92b71d1ce1b7e757fc26f6167f0752536ae159d02897988fe41bf0b3a960. 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/FIBAR1200181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24c6bfe685b9db0bb414a4cdf11b47ad908781c26d49732717f01f4f2495291. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/FIBAR1600569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24c6bfe685b9db0bb414a4cdf11b47ad908781c26d49732717f01f4f2495291. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FIBAR1600569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76ecc3eedfc028867d6ba207f30bbc2c58a4f2bbeaf2fc944fe50b74f4d271b. 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/FIBAR1600655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a926e32ea3acaee66caf66b5e8fc5b6b7ce90933a6220453c85470cd57bc256. 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/FIBAR1600656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a67eeea6a2e596f2003755768896b87d70583c23cf18355f11ef0a4269e8b47. 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/FIBAR1600658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447053652a6a1162b85fe7ad621bf5f6f8d5ba3c0c64a856e5147324017d1b24. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FIBAR1600659.