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 0x2396df5e8a097da24c14db3cb498b9770bb5acbfb090f35900b2978c7536e5fe. 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/59a9b347-fa17-459a-b123-be51619143eb.json and https://artists.proofprofile.net/proofs/artist/59a9b347-fa17-459a-b123-be51619143eb.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 0x3e7f150457d51b7037c170fa265cb49373e026459f754ecebbc0f1aaa0ca7f70. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ESA012434217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9aed68b990f0dab6f62cf10a8da336f1a89fea63f7e61f4b03d68dbbf53b89. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/TCAIE2403967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa395da6c57c126db4bc6944bb95a71ac156e5ef06e3b23b3629a3b2d1432af2. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/INY242402988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a8c470095b30b507cf3ddba7e9ecbc64f95c47ff2d85c1c6cf3106d8d7ec8f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/INY242404315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ffb75efc432fac202be29f07a55a6bc14a3d87b51afe3ee6dff7181947d585. 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/INY242406978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2432199a6d8cd53cbfebbd2a596b87a34aa79b7d915e661b4de7cdf4c9faea6d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:55:08Z), 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/INY242405445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45da482c4c2f34a88bc484361747d1e8515c793728d4704320d77eb0f3ca5f8d. 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/ESA012473766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882c1824981f209e6724dac5235cce91a5d09f1f29a90874b2557876f218286f. 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/ESA012478030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc57a914051be4989144cafb3af4eb1d65cad3c7e1f4ee3c7abb0ebf91471c09. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:03:54Z), 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/QM4TW2502790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58479770e53f2a3df6a3645962f20855cf2ac3cf1b3c47c3335a1553b139874b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:34:32Z), 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/QM4TW2504980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bfd831d26fb78d97fbf5b435ad3def40f354327844c8b125fa1da2a0befd06. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM4TW2534257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde6249a35a853f02c4ac9b8772f1c28fb30b419fd88ebad28c32723f079a880. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM6N22554253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e7c819e31f497dbab70cedc1e8307fcc589a4fb3c41e1eb020efe88601ad49. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:35Z), 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/QM7282519603.