Murr may refer to: Geography Murr (river), a river in Baden-Württemberg, Germany Murr, Baden-Württemberg, a municipality in the district of Ludwigsburg, Baden-Württemberg, Germany Rems-Murr-Kreis,
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 0x007750354170e25168871bcc844eb8238f86ef7281190727f37ffde757d636d8. 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/c2b336c6-6ca5-4c5a-aad7-18f493091eaf.json and https://artists.proofprofile.net/proofs/artist/c2b336c6-6ca5-4c5a-aad7-18f493091eaf.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 0xf38ab47897201bfbd5adb98dd4300546b975ea65ef7f9f8dc4cf6f64bd6ab670. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN52358977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ce8b4ec67c2920aa7d2e46a0a694bc5bf59d68f06db6b5df7e053e3aff54c1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN52358979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bf9dccdfb6b12aa6780c917304eed725946e0e4b723cdaee13b6e69cd83a6c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZK6J2388310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8212f2986ac103ca9c0e6337ee6ac93600eed798e1a6ec645966a99164fa75. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZWFS2315993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e4ac7f1de022c4d6770e835f2c97fb3a23c9b95da661473ffdb07b4ed595c8. 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/QZWFS2315996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490c538fd7041e69915890a87a69931bdb614f6509fafedbb68d2ae6bef12f33. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZWFS2315997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d39dc8a94ae81fb310ca4fe65c48f66d6ef205784aad995fff5a61f6893025d. 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/QZK6J2424382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe85f09271084ebce3b7e08585fcc54d3acc0567c7375600ee1809768d3c162. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZWFT2463982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5bbeb7f78f5af95b1598046e374b178a5ebb6a96733f84bafaa6db769dffe2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWFT2463983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa11d1d3333f74c94e555f0928b8bf51a60dc0183c5dfcc90c687b949a3ffe9c. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QZWFT2463985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417986158b704ef38e9e1c90a81da97c05e1911322d903a95ab8167bcabeece7. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZWFT2463988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3b36e8da96950c94c1a962574e8e5604953dc4b63474e48a9428616f48db92. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZDA52501650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf27f2c1e6f7954f33ad3f771305eea51fd2d92eee8fd9a35acd99ea90cc83c3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZK6H2525410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3b36e8da96950c94c1a962574e8e5604953dc4b63474e48a9428616f48db92. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA52501650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245d2fbb6832c90087477a5784b8742014fdac0c23c92d35717773cb8215ab6a. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZNWU2507209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7d29b270969e4454262569f5421e085a67eda0fcd79d45bd43c927008db127. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZNWU2507210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c5b1d7fc7c8801febb39ef7803b4758e885fe234b4d73ce1e04f83c3daa967. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZNWU2507211.