Barcode Brothers is a Danish trance duo consisting of Christian Møller Nielsen and Anders Øland. Best known for the moderate European hit "Dooh Dooh" in 1999, they released two studio albums before di
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 0x6578780a8e52d9e992360c83c06de3c2b8b06f805193dc54a185d525c1afb42a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9b1748f-225c-4e79-91d5-dfc88385fece.json and https://artists.proofprofile.net/proofs/artist/a9b1748f-225c-4e79-91d5-dfc88385fece.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dooh Dooh (Stereo Sound) [AVA CROWN Remix]
Dooh Dooh (Stereo Sound) - AVA CROWN Remix
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 0x95e9051ded3628eeed41b875a9e1b4fcd2708380ac8d8862eb64315d89ef06c9. 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/DEUM72304937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8953465657596d0f8f8b1067bb6d36ff52c6dcce8ee58739d772c4c1644793. 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/DEUM72300351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5a829622b58f2a1f1c7cbf4f5a5feffa0b787fc762ff33dc4887ed9f65fa31. 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/DKBKA0000801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2f044234d4bf8919e4f2ef49c1209535c992e3389517a09b5f954a1b2f7f72. 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/DKBKA0000802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885ad50544ed28a1479daf2fe1aff79030c40af1ce8efce52962de64afbb1a17. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DKBKA0000803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8811286d46f93874eb4e68076d19339e5bdddd46d62ee21ac075cdf1f958a1. 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/DKBKA0000804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fd4c733b64752a92f612791043442a7b3c6617f41ddf981b58e827acfe1432. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DKBKA0000806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf657106b38af5d5be5367e5d0fde08fb5b6031b9d1171f4403bfe20e5a739719. 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/DKBKA0000807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f42f22f1e87ce0d52d446407670c64233d6cafdb316718622bc1ccf759905ca. 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/DKBKA0000808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe353f50e9f9fd95a0b7a71de32fc2afdb4578213b0931aba93b5bcb8cc1ab45a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DKBKA0000809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61df51bebe4764c012969e944cff513aa66d0e682790aa0e779780694a77e56e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DKBKA0000810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338dba2c06ccc579a2b2b248b5b42f98b63c2612ec3b35670f13bd040c2c4941. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DKBKA0000811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6af7a81b6387d1493d2ebdb1dda95a58cd327f4a34009b32ee1b0b40dd81c82. 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/DKBKA0000812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b6d206645a61c0467a63af08d46ee0c4bf9bbfd2a104f6b0208e47881376c9. 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/DKBKA0000813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fab7276d33877887012739c3b20a0469e1b6c9d546a7185f85fcea886a6df9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKBKA0000814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55eb693db987b346e3495cef46ba54bf10a36e8e2df2e392a0498c77118ead08. 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/DKADG2300169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e43fd634b2ffd2fbe8993666cb5700a9265699325ac5465ad97a92fbd061be9. 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/DKBKA0200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862f9deeb9f1b629a4066df7d113513073e12effc53578e2e9d6637965b6fd51. 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/DKBKA0200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ded6874309c4d254c949792d7f66f9f80a454b8e92108de48f430f4d79d512. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKBKA0200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de6c181ee19d654631713cfee6776f5050ee6dbebe484d4a0effc8d4f09889e. 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/DKBKA0200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adbb83fd32a9c2a65753bd5ea44169afb6900a339b0fafcbee4b9bb925941f3. 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/DKBKA0200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649190ee6f97b625fb693d570bdc24652548d461cac1bcf6a76a0b4aa5c4de53. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DKBKA0200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea1a27c67f3c90bbc1ecf6f65cbe656278bb7249c3119c5efc58567bf592eb1. 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/DKBKA0200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22aa6aa53a8cad46dda48d34f383f8a18a68e0e3873427d416e2ea4374a8e04. 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/DKBKA0200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3457b4064778a5459d46bad5a8c248eba3933d9304d9d6f5b9eca8f17113e5c. 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/DKBKA0200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be41b7a2c12b2c6565f6d91659b24639367af2604def8002a72b42396db05f7. 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/DK4YA2400234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ef9f5c6d97947a3b8b320d985aa864e03c61ccd90e903bcbcce298c3b59024. 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/DKADG2400446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfd307e8a3109f8f0e2cffa1bc68a551e3a4bd3891ea81e469d17fcdce3ab91. 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/DK4YA2480001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb263786c6e5267407597879ef72e60ee5b2090740406ca1bddc34d7e875cc745. 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/DKBKA0000402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebe93c209102532dbc51cf7bfa842c60eaec5e82fc04705d7a0e2dd4fc45827. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DKBKA0101901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ad9156a9350f1c5eb9d6a99fd7844ca1f199bc04ef659abf50f268a5ad9b35. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/DKBKA0101905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b1bf84e8e4f0215db08f5db81a925ab5e43afbb6cb2f5d0f07512e70dbcfef. 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/DKBKA0101907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf46d3b19945e28e10138e75e1e9be6e266ef29cb96c79b738d6d3c2abd27d0. 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/DKBKA0001201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf657106b38af5d5be5367e5d0fde08fb5b6031b9d1171f4403bfe20e5a739719. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DKBKA0000807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fb948e1a863e5fa9f539123e815f1c416bc55412477ed5f725c430059e5bcd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DKBKA0001202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275fa2e3e24d8a0a5c9f722c3ba7c67b40ec0b090ecf034106abe0dbc33c6b38. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DKBKA0001203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ae65bea067bc3047d64325579b16310e278d23683d4159c18f0c1ba8db40fd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DKBKA9901201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc7b6a5a3fa5bdb1dade9bf31236590dc209bb01071015d9db6de08db0e1e9a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DKBKA9901202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0f3a8821370ab7753f615d0734b9818e018cb8735195324c75cf59b7b17300. 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/DKBKA0001404.