Qntal is a German "electro-medieval" band founded in 1991 by Michael Popp and Ernst Horn. They later added vocalist Syrah (Sigrid Hausen) to complete the band. The band has roots in Estampie, an aco
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x024d7e0675f5b7698aa9e996cf04fd8486717fd256ef85802ea90c3fa0269599. 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/fd14dc51-a140-4df3-8bd3-fcc812264e79.json and https://artists.proofprofile.net/proofs/artist/fd14dc51-a140-4df3-8bd3-fcc812264e79.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 → block OTSBitcoinBlock must exist at that height 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 0x7cea80a07ad88f37aff661d54c668a2860ded1d4d9180fdf49f70a637b6f0e9b. 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/US37B0701392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141ce0ce81929878d1a30c978b08b03bead70267036287504c26b6e1e08bd27e. 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/US37B0701396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad94bbf68dce26d383c638a970082ac1c32c2ca99adee7dd67df34f24cb8ae6. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/US37B0600496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f91a47262bb79ce45a5197986eec38afbc8e5f3e3b7721816706fb93c5dfc3d. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/US37B0600498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb2db549ac630ca72e56cec3902d52f423c8fb75771c8a602c12804682b0d03. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:41:09Z), 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/US37B0600501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37188561d22816f54fa26c7db00e37bc36c3ecc4572b13f2e5ed288906b372e. 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/DES370500330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9742aec1f1fdad5879cc79cf2568def0d494c267101337eb08cc4d85483d19. 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/DES370500332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8534331ae7b15eb5f21f751f90031cf656871502a578fc10c7b7b577a8fd9196. 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/US37B0600481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1391a197e461fc74d2ae0f1e083a03675e259ddc3dcd3ef49f807ed1ca83ee. 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/DES370600073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565d779cdf853acb30c57fe52af213bbe431a1c2e00e02e6be1e3000b781f7ee. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DES370700162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd561d9cb58b960287970df334091c2f4c119c3ceff69f68294fec6deff336ec6. 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/DES370700156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3644c052bea186cc06699293c9237efec744dc05be0e8a4512db7cec4fc70956. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:23:54Z), 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/DES370700158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae320d6f024f1caab8179e302a11999bbf0a1419506a61e20f114004a407a3e1. 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/US37B0701404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1899d538a94f8119d79860ba9024ff024e7262e7c2621df6907a4650e924d8be. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/DES371400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd910ae92e26b9db7c338c0a2f045d37d934c2fc1eeccce14cf40be04d5ea61f. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/DES371700080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a863dde7e1c5c5a8b920269c82e32c5c4cb502d5ac2cf02745a68edac84d484. 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/DES371700082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2734335bca3ffc3ed5a9b8d066ea0f0954ccbfe4eff85ac5c3255cee1df7c83. 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/DES371700088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe493ef5778fe9cb16d560df4a8a7ca4caa35b7c9ffc3e7026891e13f7d2e367d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:03:25Z), 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/DES372200748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad9ffbb1f93a4652473701a394c3f76ee47a6d9eb511b1e18f097490d979748. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/DES372200749.