Murmur commonly refers to: Breathy voice, a type of phonation in speech, also known as a "murmured voice" Heart murmur, a pathologic heart sound produced as a result of turbulent blood Murmur may als
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 0x0648c6778c1a13dff3289577d91540cefed2bbde03946307ebe1a76f1d0cf722. 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/73ec4877-326a-465f-b16d-a6bdabecd8a6.json and https://artists.proofprofile.net/proofs/artist/73ec4877-326a-465f-b16d-a6bdabecd8a6.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 0x8e51df1fa61447dcbd7984e386e2e875b02327015895d652d0661f75ac002ba9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDA42186539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e5c958609d8a5177229c79d59529a5f273a87f125b0118de8d0267d402df0c. 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/QZDA62143587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139d864618e09306ebe40a7faaf12136780f5d7a9976d1b4b4beef7bec370434. 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/QZES52157096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d1b03beb1e70a18bd6c8895c9cd8d776a06009543493857cf4800f3c6012d1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZES72196103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9883a74b4ee4fd6a9ab99cb27b049956b042472179666be2e63c0f43b1de1cc0. 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/QZHN42102734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d58830b405996cb74955c1855a8905d641796ff4594d270edf195f2c5350ea. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHN62180461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd883aadd64ec056c99704510c758f287498b47c2bf38fb0f04c02201143ce8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN92101210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ced59fd0b7179d3c1fd7c84a22bf5f90a8f648ca9625cae92c6c54de0684de. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZHN92101211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b8f664aee13d2b769c1d4b56790dd3233eeab95c6d2324dd0932098916ec73. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZHN92101213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64c0e2c7627583bc364a66d1059a0d9b4d0000dd9057e026236bd559dd1ecef. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZHN92101214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cd2ce7c84164dcd9e1c8392cf3326e7f294a11ba231ed1f4f8921611c5788d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHN92101216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd720a29d931082ab7090c1aba76b7a44e254d97ab78b3fb0c7eb29daa082207. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHN92101217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8e2d28b1c3bed8a5cc8275f4430125703def7d99e52f905ccc0d2470159d8f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZFZ72217444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48be497bd4303e1601a5e9535d40f7889c1f61476259da616f0932acb29cedc5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFZ72217445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2f8e6faee16ef02d4e1cae2ef4fa48fcdbdce28e3886763cede30ace04d7ac. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZFZ72217446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48b9c6ef77288b90629d133cef38084ded088cec362bd04fd764f4dfc740c8a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFZ72217447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64b920aba55dbbf35a2aa3697ed1fbe579404c0de69cb1bdc4af20fe28f2c2a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA82264233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f44570dda161ef4c740bbb8571cbd5cd40ebe60ec80657d69dd90c723167950. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZHN32256587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dae9af9c3d77da6b176c24744f934992cd4bb8a1e241597e84fdaac4d53cedd. 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/QZHNC2270546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7358fb5dd14ba2e7427cb46e7309e42ac79a1e066b685252db286e00e7aa65c9. 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/QZMEQ2230159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcafc4a67f5863170ec77b803643725012ca9a87bf49a80493584eaa3936cfd. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZHN32499718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc42b9564a8e46528998aa2e71dd224adb5eba07a33b99904ec98571b7c7d3f4. 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/QZPLR2528792.