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 0x84893b9e11314b9d77a3151a9d6287876ea380bf9592191ebd6ab8691a526335. 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/bacf048c-09f6-4185-a662-a1d6e649e7f1.json and https://artists.proofprofile.net/proofs/artist/bacf048c-09f6-4185-a662-a1d6e649e7f1.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 0xf239bf0e53b07c6ddac916460618f6d47a5f6ccaedb840f819e868f30f7ff661. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/DEXM82104727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16db8402f38eb5d5488d26c50b68e6e447567b7f7810a30fd9dc7c2020c9276f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:27:02Z), 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/DEXM82109793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b98fa2aecc2651b13f9e2e9b3c9da201b5ad9d2ff27c3fe50732f4f983d893. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEXM82109792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff24326f949ade938b16e4b95be36138761c832e3ad87323783c581616f4a8a5. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/DEXM82101101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb68d425ecee2c8e33d1233dc912727cb00803f15e25da75ceaf2fb7a62cd80. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEXM82101234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4415c9f0ca59d6b9b18640c18b23119e69ad46cf42584d394c92d889fe57954. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEXM81901135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f656e1e706faa00d7838bb5946a3fde680c68e39632bb28a7142bcc2ba7813. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEXM81901083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f04dfdd0842a52ba300a434c9b12aa1784511dfd902f576152dd809e4abe7d. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:27:11Z), 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/DEXM81901140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d32b2b2fdea03fda2155c66d2f20f03d64d7a36d5d22bd2efe61eaeda44a396. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:19:01Z), 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/DEXM81901092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d10c64ce0f64364cf43b688a1b083c76f8334b9cce5e73b5c77020af293f009. 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/DEXM82101270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc60f1e4f852fff5d83f35cd8673fb943b6783bb06a6e9fe9699f880b06620f4. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:38:35Z), 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/DEXM82002456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22542800d3fcc70364ffc64cf3add7846435a081cbe8f8fc65fd454a1ba0fde. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:21:40Z), 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/DEXM82104366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348dda018252a1e915136e524a386e40d2d09dd3dd7a235e58b098dfd4197584. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T03:01:12Z), 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/DE1KS2300296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460531d899b213a9b625fd21e8d103f598047453a77894d11acef19c6d1aa416. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DE1KS2404830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660f211cbb224d03dab5cf5bcdf6b1cd80cb663c589348d68a8624140e1b226b. 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/DE1KS2412736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df228086dc44c497c640e3de9bde1474fcea7bd76ea91bf90b84c2175746cb1. 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/DE1KS2505129.