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 0x985ed110c830cb724bb5fc3a1d80f8d478acdb0fcfba3e66dde15a857510b738. 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/0bbca917-81bb-40b8-8082-edaf1c7bfcb4.json and https://artists.proofprofile.net/proofs/artist/0bbca917-81bb-40b8-8082-edaf1c7bfcb4.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 0xc48217c3b8d1e160c3cf61945847e55e094e42d1c4cee0ee720f640ff96d87d5. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZS662118048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0def0e86c3e993b6293642b37480be53e77d2584406416e4db1a9ed37c9c1d6. 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/QZS652184302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0844dd8e64900849d98fb18613cbde60c3d75d44e24ef08f61c899b5f9ce10b1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZS642114970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc2007739847caaf7964d09d99234f65eabbb647ca885438b62bae2713cd91e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZS652201161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1eedb705770701aed32604657c5433cba5b412b9013f87402a25beeedd01332. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:52:00Z), 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/RUA1D2437550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5c7768b8fa3fe34401316fe3fa6b0901e12a454133c98ec47d2d9b3f90ac6b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:07:03Z), 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/RUA1D2437551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb550f3aecd1f150440e4375f4183f8d4583b674640f8d409804ba92f0cb7a52. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/RUAH62408616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fdbf426b61bd1d8e5d92c3d640bb5bc94dede2a6cf5c2613716ccc81d7e2a2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/RUAGT2591388.