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 0x03a8d6a82dda882456c771650703c6f4fd115d63433e28a5ec6cd0b091ac9971. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84dabf25-1948-4a33-a911-68a95ce2c56f.json and https://artists.proofprofile.net/proofs/artist/84dabf25-1948-4a33-a911-68a95ce2c56f.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 0x407abde02a44906985eb98bf3fe6714016d90bdf6682337284e607db0613f43a. 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/JPA961980078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5772cb405f354c12fe47e627da5f961cfba6608523fa250dda827700da8458dd. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/JPA961980119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01180e6205e894be5a254b96fe17b53a0a3b82091fa212bf4034e12b8ef985c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPA961980120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a0457fe149e93cd1c5c66f26cf6a42fa6fece018f2bd5473e8ee82666f1367. 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/JPA961980121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc13ebf5618d16381ef60d7cd9fa1c561030b6e95f4b93179336b4b6846f70f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:23:00Z), 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/JPA961980081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155d4af50738f61a51c6d02d31a5b714ea1f6f3b63b6eba0697e4bcd20d5d03f. 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/JPA961980122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103c40980fe851af5d1263f26b2a465b9a45bef6f9ec14cc5ad0d3b5b0bd4b5f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/JPA962080002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3dd4f93317e2db7ad478c7a026bd32cb4e789535cea0242f5e9e187d60ba25. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPA962080212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036f7b118ed1297d5ccff15c76023f09c525e030a209649ebe4c5123d13470b1. 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/JPA962080330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff250352c3ad8698fc904251d040a360be16ba184acebf2b3f646b32f575e4f9. 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/JPA962180214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2fe6a72a6749d9318ae82f7c379b4e4b152420eb51a50e17d14b26c0f79ff8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPA962180053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ddcb5a43c7b80410fa857021cc9a179698b6b93caac3bac04c1006b673d42a. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/JPA962280060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7b58ca493505c90e4e79ec37d87cbb1563b1b6b2079f174b0f37fdbe740bbb. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/JPA962280154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13667767ba3690f29405382067a5d2e2c2807134877ee5a5868065d705c560df. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPA962280277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa137bf4c263d37837fe032e808480320ca39697138d81fd6bbdd8eb062e3fd3a. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:34:13Z), 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/JPA962280295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d82fd1e77e3b2f1ef29ac852b21f3ed8057da6bc1377e36668fa4abd000ffe. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPA962480034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c124bc4bdb9c88c8d8eac0cd97d79356a95560e23eba0013157613798bda9e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:30:11Z), 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/JPA962480251.