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 0xa5197cb432981c3251a47552ba888f57644b1da332e9c4104ae9dc1f074c5d1a. 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/1b9c68db-536d-4fad-a427-e82f03dbb303.json and https://artists.proofprofile.net/proofs/artist/1b9c68db-536d-4fad-a427-e82f03dbb303.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 0xa61d58a1c582a4c8c9a661548117b03bbee5ef9d8cc70e4453478a7d0589285c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZHN32205453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c150facda42669b7024675c864c7e7a6e9b6e16b2594cec481e0e893664648. 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/QZES52355379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30361570b7b905bf0bb994a5f3888b5c059f9d3744a324744105db6d5a4055ef. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHNC2341880.
it's all in your head, they are just memories
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f11248f71a6abfac1880045932cd08228ff4731b10dfe1c2267bce3ba59608. 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/QZTAW2329830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf5e624f4c137400ccf8c83e760b8fa501939cc5eb87decbdfc1c7d48cfcc69. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:25:46Z), 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/QZWFF2393278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e71fc51d3ce586832ae8870621643cb14ea4377a5ba8f3619e3e203de5054dc. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:30:45Z), 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/QZFZ72496620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce3b0354ad2058ced864ae14766ba3c138d70ee32511b25469b184ab1f17323. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:52:37Z), 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/QZDA62447209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f962e1bd55bbde78ed8e546781b8bd8f8f201174dfa6eeb361bd2cb2d5a882. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:36:40Z), 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/QZES62410374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764bb108750bd9aca5eeb992da94bfb583b29b2439c23e8219811009ba4f1eba. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6N2491975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e34b907ce73349a557f626bad394a5e46daa872180441410a6b37d407f926d3. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZK6N2491977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10138ce4d4f1d005b45264690b692d8b3e9f0f3e4e04ee54f4d734ab2b479948. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTAS2491220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494c1c040c22ae66821155ba4709b7b5167deedbd1ef8a0696ddb6deca8b16bf. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZTB92440488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe851c05b7e89e5b0aa1d919066c9c44d4689a1b98ceb166658d53d0bc777a483. 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/QZWFL2468383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b026bd60a20179104247c75ac27bd6a8f468ac7d4edc0335d2ad5393cbd6a2. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZWFU2489712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d3f40e136ca3b392923b9cc055a4f8c02a50b864c88010bb8b22f6aa922560. 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/QZZ7P2591025.