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 0xf99e49bb90df8a2e574309e7e8823311b898d69bd91b82ef7f71d3c00d80553d. 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/fafa7bf9-843e-4f25-b778-6eedc75721e9.json and https://artists.proofprofile.net/proofs/artist/fafa7bf9-843e-4f25-b778-6eedc75721e9.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 0x1b74c53d14f2a45798375d7d6cc7f69f1974161bed5e1a39639b2c5531229737. 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/GBKRR0500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b141b48631519e3f9bd941d7aaa4302cc39cfe13f4aaf989d3fcdb2ac7bb4e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKRR0500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1511ac5eb78ce91e0a599db0d69e2bf0f950fe63953b72c3329e6c4d32cc2084. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKRR0500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee09972342bf2839ebfaad03d57105bb2f2b356d4802559eff7368fa52fd731. 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/GBKRR0500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278d84e3c8a71ec24aa982e2c416cd03a408c39e1927f9bce1e19e7dd79f3c4e. 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/GBKRR0500005.
What Are You Doing the Rest of Your Life?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed67305cc02d501f4d5bc909c78904c23a0583cf4c4b4adfe0017b51cbf10a81. 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/GBKRR0500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdb8571bac6c812fef31ffa1d53aa7640cfa2db7f2f2cc16a61726d47a6feab. 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/GBKRR0500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd2db72dd586afa2029d101a49035eb092d252451469674ac765c4e61997bce. 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/GBKRR0500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664e7fa771f2970d4f34204ae9eb2fa17f457d5b1d1f85d4ca45a64942ee013e. 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/GBKRR0500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ead34186dd0dc752a3e64918c2fa2f8c52a84e34b8fc6caeb1a4eed24674506. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKRR0500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1724c0642842ebb31e32dbc7607710ecea4c86165d28cd1b5cd83804711e5060. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKRR0500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a576006258b9fbcca1b39456a29944044c6650e00d03abf6af4676f8f66a17d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKRR0500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57b34418a63825346fcefbcfac3b2a72ced368a4a7f528566f7f56e3ace40d7. 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/GBKRR0500013.