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 0x37775f0b69c26f48b01b9955edb70dd45a0213164b55ad57023eaefc953acdb2. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e82bf59-edd5-4657-ad80-e8ada08dfcac.json and https://artists.proofprofile.net/proofs/artist/5e82bf59-edd5-4657-ad80-e8ada08dfcac.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 0x90171c87408cb6b47ca6f67d236eed549996e657b95b461cd33d51e17e13559a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES82146887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5948a670100755dc848bc58afc4ae0177e89894ae9f73e2e7c17d8e01734e231. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES82146889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21eda191adaefaa678fd5fe69e67fcf24ddf090a19ceefd1c0809677f21aa29. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES82146892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44d21571654a167051a6b1486631b74a703fedfa4ddcd296e8e4340aa30dbde. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0Q2438932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcceba060d04a7d68a721307cb1d8bca550c7a6f3ca7524dd35044c4fe3847501. 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/DGA0S2488148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f7cd4126110e2c2efab82dbaf981120295f6bcc8d7035ec05707e24910b8f0. 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/DGA0S2488143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7699c21880dd5261e37c849193da5540abd9cc86d06e9994bc06af00e05cdb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DGA0T2406604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f7cd4126110e2c2efab82dbaf981120295f6bcc8d7035ec05707e24910b8f0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0S2488143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0c24b7bab3e26cc7a16f0123b677bb9b3a4288121ea25f316d891ff2120744. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0T2406605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34871e501039e72f0ffa4444a4ba5119f61585b0be5e776e4cf9cad9c708facc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA0T2406606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54415239478f5dd4a1d889c69d32578ce8cec7678ca398933d97f88476ef2c48. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DGA0T2406608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f60a916dc9e4918cb9ada95724aef301c942671fab137622612c9825c51728. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DGA0T2406609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7a5af9711fbadffbecfa46a7319374baabc97c3efef4733273995b14356b02. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0T2406610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73e5fa4d3e896e3e5106db196539b705772b204de0c07613d9c5f43122b1240. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA0T2406616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75feb9a1295769f10449926360ce9a4970fd854e3af7ef4b88595bba31ed766. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DGA0T2406617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcceba060d04a7d68a721307cb1d8bca550c7a6f3ca7524dd35044c4fe3847501. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA0S2488148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44d21571654a167051a6b1486631b74a703fedfa4ddcd296e8e4340aa30dbde. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DGA0Q2438932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea84273d989b8990f2630d05d947eb4ed550aead386d9cff311bada2a63444af. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DGA0T2406619.