Renz is a German-language surname. People Andreas Renz (born 1977), German ice hockey player Bettina Renz, German political scientist Ernst Renz (1815–1892), German circus proprietor Martina Er
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 0x4630fbfb3067fc6702294f1dd33229f0a96e60301926e78915df6cac91606830. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff3ffd44-be74-48a8-b9ee-9f7781501e56.json and https://artists.proofprofile.net/proofs/artist/ff3ffd44-be74-48a8-b9ee-9f7781501e56.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 0x7de5a395586d0716c27660e4f181d81b2d7c3ddfe9adc81db35dfb2ed8cdfadd. 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/GBMA21857525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3630af0948ce7aac69209a9c0187123ba9aa1cf9ba6230d27b6293b303d13e40. 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/GBMA21857526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa895b936068629b76a2f1b452cad6be42d8e01d24973c3cf418025b4308325ae. 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/GBMA21857527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d73d16c7539bb088b6a663a3c6024381bbc78133e36c088fd8e6c6b14c76e2e. 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/GBMA21857528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc77079fb7373791f988b59c2b7298382480d2ed6c4f2317e5ef8173578cff3. 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/GBMA21857524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fc78ac780fbb4b3d3838576dd217857c44e97d78cb1fb0b4e0686818b8e1bc. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBMA21857529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5541c021d3c3105de3d70d3f6f0e28ca849775671feac149e43d911999b2303e. 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/QZHN82281895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56693af6222b4707b05ae9042c7ec3483b455d1e580af9b6ac623301785daf6. 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/GBMA22055913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde22c9131a49750ad31205a9399fd780a567d3f0db2b0a09bb48423b55e05950. 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/QZHN82281899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b599204de13d5001d69251403f97de0b8d2f55962f89283cf00d2cf455fd8ac. 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/QZHN82281900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28d737ecd190be4b4852c62ca29c706cf48c18dfc778656d8b7ad484efb96e0. 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/QZNWY2485617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56693af6222b4707b05ae9042c7ec3483b455d1e580af9b6ac623301785daf6. 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/GBMA22055913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd135aa1f218c732063732130fbb8621269c6c5635c59f780920f20c0a7ff739f. 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/GBMA21977953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579409055244f0c5291c1b15f12dc51727a20bf281fcecabbc8e2e2d52c7e81c. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/TCADM1835394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250a81105e1e50814202f65f6edc1cdef6a0491966a2981044cbc6d771c76250. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/UKXN22210750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68a72f25011a9d6ada1585f9498c876f37dccc8291a45c06578fb12657aa45d. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/UKXN22210756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d13766016a53d72a183214637686b9ef1a59ac1cf76e3ba3940d53306ae01a. 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/UKXN22210757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44a279bf0041a3eab91ab1e5fc1d042ec4321437292198a90e5ed7dc9be9e32. 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/UKXN22210760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacddf2a7a9e5661dc12107d0d93ea64f00b57ea38635358dd4c4c9403d164482. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/UKXN22210761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd03c5f74f5d44c3dbae37dd61ab25d19a78c752a622b399d7a13b12b57fe8d4. 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/GBMA22436785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb717a188e546f220a109c4065000cff65c426fbf4b5fad64ab64bb480d2524. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBMA22436788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e9cd665f71533d7080aa31a8ebfeab15f14b709d6b73e70418c867d621ab89. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBMA22436787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d04d1cebf5dbbb2d5cf770166908bc5a2654c3a1ac3a95e6e36b177eb3f1de1. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBMA22436783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32ffd4b7505054a29e8c5eec95d5b3d4d9f6bf9ccd5fd039484b510b3ae3242. 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/QZFYZ2497365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fcebef07a181fa29b364e5b16d8c5253b24f4ee86bf1dd27d8b8f7d97d7246. 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/QZFYZ2497366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93898c28a46df46fdb4a2736c70af8cb2c65dca283bf056477a8499a36e83356. 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/QZFYZ2497369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420bdcf93147f910a5da9da553bf0f21fb5d036ac4c3f2ff166be44c2ed8c249. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZHN82486676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ae47d7bb0300a87feb80934456897fa5b9aede09a57543cbb2dc1716590586. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/GBP4E1700317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae931179bf3c46791a894268be2d31776c886a2e94406c61ae19e30bce21985. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZNWS2171424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1496cd047927a48cd5bbc1cd3221eb7a0f575689dc3a5042f17f30c8f1bd579c. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/QZMER2264582.
Atmosphere (feat. Kwame, Renz & Raj Mahal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc77079fb7373791f988b59c2b7298382480d2ed6c4f2317e5ef8173578cff3. 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/GBMA21857524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc77079fb7373791f988b59c2b7298382480d2ed6c4f2317e5ef8173578cff3. 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/GBMA21857524.