BRENDA (BRaunschweig ENzyme DAtabase) is the world's most comprehensive online database for functional, biochemical and molecular biological data on enzymes, metabolites and metabolic pathways. It con
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 0xc9a9aeea2a2cbb072c7b4ac9871e33ac28c5fe65696f036a2ebcaa0f099f4de1. Chain 2 (Bitcoin): anchored in block 953709 (2026-06-14T23:31:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ccf403f-fff8-4730-b403-4a32d9f8867d.json and https://artists.proofprofile.net/proofs/artist/7ccf403f-fff8-4730-b403-4a32d9f8867d.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 0x56a405ff63ef1d19ed1ef1dfb798bc7eb5b27928110003c34e926a0bed8bf582. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZMHM2370422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb4223c55d26750d2a62587787fd7f7728da75ab02402422075762216569e71. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:09:33Z), 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/QZS632385646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaece80211518b188c2bd324a92174259895ebd51605b74c2d0a4f5be2ba14942. 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/QZMHN2266896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213f97844a8fcd3fee5fd717f370507a65fc40f5f19e32d9f6fb8ce4c48a3e36. 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/QZS672233465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8944ca67fa28b382e0331feee904feb3edbb4a5b9bdc680daaabd5707a5f8497. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZMHL2271490.
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 0x4120ac45231e5223c557835b8f4c8c367085282a6e89c2804610b7c7471e644c. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZMHM2278657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60556dd3520254961c801f08b71892787c98785e04da3e74eab59073ffbb4397. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZS672265723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b89a71fb5fb4e4c873d2487df2f026a1441a3e8b887e6d7e64f5811d231740. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZMHM2432681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2393041c5fc1cd475efce25c695ed937cc1571f05ee161e8211c594dcb4cd53d. 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/QZMHL2527130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4077d549429f54f05b722be89ec724b6fc785720006e5131377ba4849a7eb3c0. 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/QZS632505586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49172dc2d9503ab340fc7d0ef15651013dd77333f18df7d22016accc38773b12. 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/QZMHK2568507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bf6d99ff3dfee69673ece537465d8300681d8e079e53e4f49cae1112aac07f. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QZMHK2588948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31ed1e186ee9ffbc2c12c5d527bed14292ad51fe2fe110e073fe2de1b375e52. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZS632579937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034c94359831db96ae1ece2d1faee9cbc206459ec59b9aad377e9c7ff45553b3. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/QZS632501831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd19aad90e48aa21cf9f8c15ccb472999ccadb1989b4090cce4bc050f80c5e7. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/GXF9Q2526719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f45e76e1e5ef54becfd9889b23161050e48397ad708bca0ffe462148a8ee8e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZMHM2599684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090c023501c597d8e5fcdcd74d096a45b0fddadd05eeb41f1354398b5d80ea76. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:28:10Z), 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/QZMHL2591572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe292531257ec1ed8941c93a23e8b54d70a5ab745932e7be2d6b7d9b5d972158. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/COAB11900255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4cf50b2c7a59ded5e2aaa9584493684d449859b9cadd06f55ffa184abb2f5f. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/COAB11900271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6614a8d4b4d3508c04cfd13138db7ef5e2453f7ae265687ce82510b4e78aedc2. 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/QZMHM2328496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297199fe8c5eebee73c2b843b90701bdb849eed977c84768e9566a74cf1b0958. 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/QZS672442151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f7b281bb268d7d759282e3ce3428fb8921c93b7b1e544f0f8056669f4c6a1a. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/COAB11900220.