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 0x06afb20d2b4a9d4c6e029da57c02bea69c3ab772fffc8d2e060a7d4d0499471e. 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/14498b7b-1209-495a-9d5f-166a432160a3.json and https://artists.proofprofile.net/proofs/artist/14498b7b-1209-495a-9d5f-166a432160a3.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 0x6359ee3219924e47a4e305d470bf92665a0f6c6d9d373109ff8c392e29fe6aad. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:31:41Z), 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/ESA011946616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd18664ef28a357d2b34b32bf746d22326f0962ce1089905226b6e48f2922a62. 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/ESA011955993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ddd25f192dbbe2be634a57d7d7da693183437398f94299e9dad259fa6eaaf5. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ESA011964837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a9f7e22b44450fa0b8aeae3ce2ba0ba8ed00af31e0e25cb877e9b9cf35346b. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:00:00Z), 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/ESA012009300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933bf1a54f8ba4f283c8ed47de72bb51b22f575d182cb0937acdca422e17ccee. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/ESA011857721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ae7d9bb58ea0e112871d2760d0ae9815347437668fe0cc6777a9e269442e56. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/ESA011865844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6605d0f8a9e489ac4a6152b87d88fd4bacb3c6d18d89e4d1271fd2bc2b11b697. 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/ES47E2000373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15797324b4fe4329cb773fe094de44992b26cd143c8f6c8a241a4086e6e548e4. 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/QZGLS2164371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ce7a4ee7ef49a143719bf3449d5b494ce1edb62530fd8768d4702a1b31acff. 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/ES47E2006965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddd21e2ff9a3116370b2a8f9f697d3805c29ea0ad619a796b26036cf14cf2e3. 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/ES75E2203413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394c68592e50ad045f6c84c3f2b4bf9c61b189a83b6d3615b44aa68677c18341. 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/ES75E2204027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe817cf26acaea7a20986c47605bcd7252daf5fa2432ff83ca135cb94a6f9683. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES75E2204781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca27de8239239093359c55ce5a09f0121f311f557a1594f398f325c38573fad. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:32:26Z), 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/ES75E2205208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d451f9af6f958a9290a6871ee35ebeabc1511ce96f1d8cf3af44a29224daf8b. 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/GX3Q92321286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f212a365af24c5d3253b26d396a4b02a17edef2392de0dba6679cbb2b20fb5. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:48:37Z), 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/GX3Q92362634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fd25cfad868683cdcfc86549d8b4fcaac13aa2e5aa7846721d666e1cdb6055. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES75E2303038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69bc0686e8fc8bdcf9569bf1944ca36a8c1c02008116058ff37e0084baf032e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ES75E2303412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15725684c8d01ba7dbb15f99219179abecbf7077186da7e01027427466e7318d. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:46:28Z), 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/ES75E2305173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90352b88cf78b63983ff54bfea935dc992b865606c7df139f27c78426185e4c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ES75E2306820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90124d01c9a63b94b308dd95a87cfe343e562d273dbdba26c2174adba0cc051. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:36Z), 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/QZTRX2475878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefccb147a338bdf5f478cea217288ee117233bde0e85b520b5904552d2c376cd. 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/ES75E2405873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebc826ddff5ca12478f2246ac897cd5b9f4fbdf9e10d346b3bba095f3420489. 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/GXF9Q2598732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e8b3de2c4245365e725af7ed24fd6cb1f60e34f0337ec01da65f8e0ad88fd1. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/UKXN22520350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe99cd14d2ec9fbd27be84e05b3009a4882b6310f9ebf4214bfc360cc5013e76. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GXH2J2552591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb2acf9b6234f0d071f12a7c29f2158d4e019cbe04c76074f8dba598d0dba9a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT5M52543791.