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 0x34fb8347c7012cd35730c4c915a263d7e4fbc83c8ddccdcbf679270e7d90d74c. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d1e8308-b2f3-4742-892d-2d2472fb08d4.json and https://artists.proofprofile.net/proofs/artist/0d1e8308-b2f3-4742-892d-2d2472fb08d4.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 0x56a7707cd51a77266222f30b3b69c50a578963bf197b575d902ab406ff393841. 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/SEYOK1826021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8920abc9cf2413d46a18f1842121c4654f1774077fc989b74214da300cfb795. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/SEYOK1826022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e8424eeb5484628da8a3cbb5eeefd1fa97f5f83eafd6c2ed341184f8ab6d16. 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/SEYOK1826023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5ff423defa2a8c2fc5df2c798abb5ff914ffefa7aa2c20cb9b58ea8ea41477. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:03:33Z), 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/SEYOK1826024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a3f4d7bd25b9c167078f69c863e92404ae43d51147dd32e3fd8cf58c9e5642. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/SEYOK1826025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b51816f6f9fe20f2c283caa7e1f5170842e440c8a03607289247233f07fdee. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SEYOK1826026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1490d06db80854c034556f14ef0d4d6e67fe78164f5dc36b696ef246b330fe86. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/SEYOK1826027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d877b2b38211b4eb9439b02393e6e95765524c0a088f745a271374efd3c607. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/SEYOK1826028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fd0fa0b1e6d227a76c8cf1a9aac248ab130315f3b81d649ff8ac12d8196460. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEYOK1826029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a8a988e4584852d9a293f1b1809aadf25bc8dfa85389ab47cd65c1485e7254. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/SEYOK1826030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7802ac4c3df072f5cbf1f69fc7ea6424263acaa4e869e787d54723a138ef16dd. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/SEYOK1826031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad87b552bc628906bed89399a51a65f2ab49ef333be4b20239bdf88266b4add. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/SEYOK1826032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c8b6225fcd3485682297084d7938dc364e6ace3548eb7c49e76ee70643272e. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:23:39Z), 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/SEYOK1826033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9b63d46d9e22903d86f69bb501485507d25577243da070997e6c32f85bb008. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:20:59Z), 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/SEYOK1826034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ba6f9d52ffbcc77d3fbe5d821bbed784fef88b8eff2a31e9df001a88dc5d2e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SEYOK1826036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f19e313a870bb5be566ce9ca65126827da7cc0c3f42964fd74c9ca666cce06. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:19Z), 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/SEYOK1826037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc850055ad4454904ca977258d47a1a64296b08f20effde597a337863b1d26584. 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/SEYOK1826039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33f33dddb75627e393ac4abe3c58d9a6c3c8c628ad50fa90d331925902b6c56. 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/SEYOK1826040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc80d3e3b2f968c1300290fe7f56291f85797868ccd7b320e23534349ac36ed. 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/SEYOK1826041.