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 0x2c83e603dc1e6cc0a013ce9cad9a5603e3a5320ec1005f20ce2b383539b2b54e. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5e054d2-bf0e-4099-9922-e44f23790e1d.json and https://artists.proofprofile.net/proofs/artist/a5e054d2-bf0e-4099-9922-e44f23790e1d.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 0x67688fc319541f250bf14b47685ae0acf3ab6e80ba34617b237b75a5aadec0eb. 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/US7VG1861580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6dba9b7e1a8adaff563d532a89d5767800f76713edc061ed72159b3038b84ff. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US7VG1861581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d451e108671e53144c3808f73a7ec2afcb2f025fa3f9244bf16c9a0e0445d8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US7VG1861582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6070ae56f1045cc91f30bbdd797c9e66a5c3f71560616f0a0eb29ebfca06899f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US7VG1861583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa995833b35bd1a334d044362c06175eb10abc70003ea339e0326f32d2adc1de8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US7VG1861584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52014f34c5aaeb183c70f230c91ad207a7d312c0abc73955a21ccb00aab4ceb0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US7VG1861585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c9d9f0bb5d73816a40b3ed5cd6c9cc3dcd50042048061df77dfd7c2a597986. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US7VG1861586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf713d85373a5d65e584cf19fb2f9039be288811bd643f51dc849565f411fa9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US7VG1861587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5ddd61e11447d08c2793cf36696314e31580b9f247b9fe1afd8db9a331a05c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US7VG1861588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34220f1da941b06f721012f0ca4a846ab3acb7c5a3f6da131f51db7bcaba72f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US7VG1861589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838cdd7de8ffe9102c5f0317cf0bb5ba78d0a1e4c62e7f034f9fb7282e6fce20. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXDQP1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d03db688d75072629b54f26a5650939c072316cc22c727958dcfba875598c5. 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/QZGLM1942509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82096b3bfbb7694ef6059ef4d1659f8117f39b49c3151f7fd045de564d6613af. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US7VG1938821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e034a9a69cb77c619afe479e1b75f3dd7ab307598004f05a808167836aa445e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US7VG1871284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf155d6d7a07d641d12d24c1df799c33df5da93788b550e4afa3501ef6067dea4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZ5AB2003394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a94bcd0512f27aa0b05e9f2f677e35d388231a4fd04da0dabb80bf4d62acc1e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BX2GL1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37b1463199006812761469c4ed991cea002722c4c56a5aa179ee99e09e25fdc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJX2252238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6be6068ee63b8536050b1ba54fb982dba5bc773437ee4b06cdd89f4a3b0c03. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7VG2001021.