thumb|A partial detour in the United States, with the road restricted to local traffic only. A detour or (British English: diversion) is a (normally temporary) route taking traffic around an area of p
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 0xf3c9a4c16bef759246498d979916bb9bd8a6d767dbe20a66ff7fb267b5e86246. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abe098a0-b3aa-4efc-8c6c-127cb7cedb45.json and https://artists.proofprofile.net/proofs/artist/abe098a0-b3aa-4efc-8c6c-127cb7cedb45.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 0x3d8fdf0dff47889daa52e048e3b68375ecfdd99434552e7e2cdb9f5e0ecf64cc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/HRA100601906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce13279ee536a8bb58b9e0859ac8423559137dd85715c7995eff63cb1dcabfc. 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/HRA101406612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66057140d299428c350a760baa8a4bf1c6f23affbcbcfc26866f8cf71dab66e1. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/HRA101506891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb175ab60cd3027db03955883589af807c7ad3a2f250415df07fc0cd6be2c7c20. 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/HRA101607367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b41c7817b37bbc19fc9847d592c11d11183abfa8d4f44e57277657d6afced5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HRA101808098.
Gledano sa strane (Live dom sportova 2018)
Gledano sa strane - Live dom sportova 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8203b68675fde0234c13574f26919e155feb1be63d5d972947174370d9fdc229. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/HRA101908809.
Plešem sama (Yakka & Ivo Prodan Sax Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e6a2ddc5cd2052b8477e09e2193022a61c1bf02313dfabde53c75c01941020. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/HRA102009266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5482fb49e03afaee0966584d781954e9e6197b14a3a95428b59902a2338d361. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:08:41Z), 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/HRA102310183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eaa730e19c43fd3bf20a724282d2cc0210715854d327bed086256aac4c6785c. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:36:06Z), 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/HRA102109408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89defe059fc6bad735263ac61d46f5effafae413cdeb4cd3bb3044e76dc98186. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/HRA102410590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c2f44325108ebb387a3ff6c62d8b728e3f93077cd31737a38e3c7d5575d3a8. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:16:54Z), 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/HRA102510781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22292a0b8b482b3aa4838da7161c1037fd36bfa662aa5417ee1794cd0b573f35. 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/HRA102510782.
Runjićeve Večeri 2006 (Ća Je Život Vengo Fantažija)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38374d219f37399aa009658f30f4133f0eb6e0bf06900e00e3beb466cc432139. 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/HRA100702062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eecfbbe8e4406b8e3d591d0a251e4bc032573026a913d9a6aac069a0f1f76f7. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/HRA100702392.
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