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 0x176e61fd3a075a99f0c3ab5d49b6d6ec205f50156d0e3f05745e81f5054389e0. 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/d6a5c602-2101-4cdf-9b2f-155ef05ff4ef.json and https://artists.proofprofile.net/proofs/artist/d6a5c602-2101-4cdf-9b2f-155ef05ff4ef.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 0x730785e7cbf0e25e863f8250d6079f5f35eee702577ebc33741dc5aa6676e057. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/SE6XW2313934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f1191ae7ad0e96ccd90a428025e4adf5fc0a3e13d1cc43b976af5829920e05. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/SE6I32486505.
Hospoda ze mě udělá someliéra (POJĎ NA MOSHPIT)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717b1880c7dc879164b087d521f24e2d18b13c6295e451d1c3ef6236b584224b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/SE6XX2514842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a66ed77668d1a0170d7a68bd17cc07ec21d03b905340ab862a8d5e3f5d9efc. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/SE6XX2500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d3331096a0ff94a042a729377c9b904ea5161ee10f95a1045aef2bff9618da. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/SE6XX2514848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98671f512a3aaa1a5374da7e9338f74ee4051711d8b8dd97e7e0a295a1ef7532. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/SE6XX2514849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcf8b0d147157c3f1a47d094141329bc8951bb7afb139e09432b6f9fc433d93. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/SE6SA2501675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1637abdf2b76ae948b5ddfd89d0e7de14573d680b07e2111af74309f3d54f0. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/SE6I32517259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd53537f5859a0d2892be1d1d44704852d0b91d11eab021a0a72efabee5addb0. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/SE6SA2360105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfadc247f32dd689d28ea9cc79893ceacdca53d52f71d70895ea948306635bc. 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/SE6XW2394669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8dc979eabf0fbbb1d6ebbacffaf88274ebcd4d54693d10b4480c3ee8f8fa87. 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/SE6TI2320385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa646a2156e3192de3e4562c3cf67fb2d25dd08d2588b242166e1ce8fb5328c97. 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/SE6TI2357462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b89c04a1a0ddc4196a85c74401c8f86b9ae1e8589347d240713d28340b2e30f. 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/SE6SA2361508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8d603077135c1f8e7ab859f30fc5354334b6c24852a549a2e0f202fc6f932a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6XY2317529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90671153e881d0f3f945beb5678fae0e4e36653acd3739508d1fae335e7b28f6. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/SE6XW2365322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b679c172fb72f597c1ea294c8399cdfdb7d1dd4bc84e50c221dbf493879a3f1. 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/SE5BU2494964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b89c04a1a0ddc4196a85c74401c8f86b9ae1e8589347d240713d28340b2e30f. 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/SE6SA2361508.