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 0xbdc83a5aa5deb577f73598bdcdd2c751abf21f264a09b86997d292017b3e9bb1. 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/498573e1-37f8-439e-8ae6-390b910e6001.json and https://artists.proofprofile.net/proofs/artist/498573e1-37f8-439e-8ae6-390b910e6001.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 0xeb3ee58e1541b8948f506a95a0b57690d097fc90c1007c1f88bd68c7c1cccc05. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZHNC2034923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2921280e7fe763566ced14042dccffe18e5f788340e5fc36a0954dd393712606. 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/QZFZ22004473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e915c18853f7cd264bc78aa22db5e02380fcb7d48c55e736b8972700bf386df. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAEG1977114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167d053eb7c56189a682e36316c51e6d5676956db421222d71fb718a8b706817. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ32162673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a01f90d998b47e2afeba69e502a6f787558c1e11102801fceb7edc372cb296. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADF1764309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbae5c4df24107b6e392eb919c4b1f69ae25fe60b8debfd582248d5aa8ad4a83. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADG1799859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa917b7dc8769243b590339f62d3149e74f6d7fb3b77a00a2ca17a9c371bbca38. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES52087390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2c3b41bdf17962253ffa61597ba0ad79e4ca2ef5c322c742667c746fa4b76f. 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/QZFZ32162679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2827fb83ce88f010c688a2f66e0a4575bacda20e0024e7381e2fe074b04397be. 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/TCADP1896644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4faf3a6ce8a0d4e33af5479d1c9fba29fe7d9b80d7c94b2a3be9b3a2d9dddc55. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADP1896654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e8bdd901a1f94f77271ab78bd2d186becc4607c33996fec93ce81afa560683. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADP1896667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d53dfbcd0386430705eebe17d50162fca2e411e35740192b8c5615c378a9aa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW5K2400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11dca30cac32971d244f61d9c43a42cad77b90b4bf5b1ada778dc7fe1f987550. 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/QM24S2201795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383d6de50dd77b91797e15efe49824024cf01a9bd5d61305fbd784d8d0466a26. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6Q2088497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89405ed6477bdf822f25ccbeef13df45ff022a3c47439652e554485cbc5f28af. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHNC2038406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa917b7dc8769243b590339f62d3149e74f6d7fb3b77a00a2ca17a9c371bbca38. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZES52087390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f7d89fe2510e26a8255840b67acb74ba0c57fac8bb17b39d024145e1eabce0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA62055822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab92ed51bab914801477ff3736ed53df20192315ae2f9aa5b0c1b9e4f616680f. 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/QZFZ62020108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540975575d80766fbf3b1e10eec7564b96cc4bebf0b890e8b9eae5816d3eaee6. 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/TCAEN1930327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad24f7c9d484d46899e10f1440bb698dd33f9901ee55362474850b15cdc2245a. 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/TCAEG1959060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02af02db7ff6d909fb393bc8b0b47ab55a218fefd4081249bed103d598391afe. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN92557127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19c57318ef4aaddc60d45496103412c86c86b8c48526301e5ee28a5d954c57f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN72586299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390d44428936f1711f821e56f349efa68398e0ccd98a4170d3ca66262235f7fc. 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/QZHN32023888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383d6de50dd77b91797e15efe49824024cf01a9bd5d61305fbd784d8d0466a26. 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/QZK6Q2088497.