Collapse Under The Empire is a German instrumental post-rock duo from Hamburg. Founded in 2008, the group consists of Chris Burda and Martin Grimm. They have released nine studio albums and a number o
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 0x6b44adae9e2af32ca82dffb5fcbe6c9b1c16ed4d306a7c7ec443b0d8e54db734. 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/09817cb2-6ab1-4bf8-8134-a37f8ecb4552.json and https://artists.proofprofile.net/proofs/artist/09817cb2-6ab1-4bf8-8134-a37f8ecb4552.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 0xbffa225b4bc85284886973227723cb6d5233bd2b74ed3e2c3d33e60a86a45328. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USHM81198188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca1dead6b7c2cd0486f219f7bb4258eb0b5091c396c4a93c3b06df9f6bc349a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEOV41400577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0ac0f0e8bedbb7d04de4b3a870daaee07e6fc6c10c605201fea54eeded7230. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:08:42Z), 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/DEOV41701193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a26af326566cddb12b921b99df7e3fa0f44c9e466a8fa09041ace3427ebb10f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEOV42000058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90713de860b4a80a032f7d8284d64de7b34d8901ac94e608c7bbbe584ad6ac0. 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/DEBL60927615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803c7c231db0687910b1b0020ff230354033674e0287e126d94780f996d1dee1. 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/DEOV41701137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c38d7375c7570c32e21d5903b2618632ce43815dae6c9d654768395f0a3fbd4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM81198196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca1dead6b7c2cd0486f219f7bb4258eb0b5091c396c4a93c3b06df9f6bc349a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEOV41400577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7d9a534fe444e9d97554d9d470921936ea0db1f7948f9575671eadc57ce017. 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/DEOV42000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305f219079f9c733dbf0bc152a7ba1b3e691dfdd8b63111bd3970cb931eaf53f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEBL60927620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486e6d141ac009f9cd01d5797845b161856f1006bb8663e16a0b093ee0923010. Chain 2 (Bitcoin): anchored in block 957211 (2026-07-08T18:28:35Z), 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/DEOV41400586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc02e9a39cb6f717fb9acee29ab2654c859174607f79432b203dd3980622c7e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEOV41400582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61894079aa77a614b9ed6395a1bd807bac82bbafba9a6cacde156383463c7f1e. 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/FRX201841587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fde134563a5e2e305d84df6debecfffba1578374e13b8643e2f7bc9caa6c92. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEBL61058061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa27dc6bae94592fa266a43e77d11162ce744b062c30c282a0c526003b748cd5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEBL61058062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9e2e81ba40640ef2e0f090da52486055724ef4473ed37e972f89bb99f3ddf9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM81198190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc35e20ffd4e173d338cd88538bea4683e1a50cb27605d5cacb55efe199b23ca. 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/US4KH1052211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9833966c6496e80d75ac39b3679048ee43912505a504e5c315b60d0a8afdf3ba. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEOV42000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f62b616cb1176c080cf680aba3238c49d02fd0c0135a6de6e76b1f887e2bf49. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM81198192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e5e4650f6a0e3ce3ca63918aafa9f1fdadc8c110f1e6d6b6646d9e3327ae33. 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/DEOV41300239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa382e46444915c277a02c3e4042e4f5f151c76f5ff313d2376e8be252d3f4ce2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEOV41200516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9eb76df842211c19bc0a59cdb7d8c98a75935ccd4476cc832dc956f24cde11f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEOV41701196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21119feaa708023f7bc62d0e0ee08370c1fd3ed8734e3d7abae650bbe819940e. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/DEOV42001421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317164a740aa90143cefd460f5a836414fcd2419788d316836c978cca449b607. 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/DEOV42001424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4af1ae87d0e7c867284fd4463898420039cda3e2ac38c7517e8a31387341bd4. 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/DEOV42001427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528ae5f27a859bb5bc8f5b1a4ffd0a07af9a0ee62c411afba924adaca7b2d7aa. 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/DEOV42001428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f86746c430c0bf3783b7e8c803e70689e6e1adb01d1488688b910bc3e4c26b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEOV42300679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8482e9028ec7d062330455590e60bed08e24576fc1d746b4ba677cb891cc31. 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/DEOV42300827.