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 0x3305e3b3167f46e02bd401ef82b7bf52b9c428e6a6aa0abf9c6a6c6b2253e24a. 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/4998d292-a30d-42e8-a5f1-c2dcc61aa852.json and https://artists.proofprofile.net/proofs/artist/4998d292-a30d-42e8-a5f1-c2dcc61aa852.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 0xb1bdaf31984141ed2dd509663100fa294bf9316788422e0a8f8fac8934bf92c0. 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/QZTB32243542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9d8cb4aa131cc61e4675c981db87c6c3cee5d3206877c7ff18a5d87cfea68d. 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/QZDA52306887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbec8b99725873d3aa2e4d6e5f7878fc1c09847ffef8d1e797763c0a166bee6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZES62390205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec4164925736714650df6d2c7a7b1dac8ff4bd5d53ffd3115ac38c053edf7ff. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:55:06Z), 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/QZK6J2338180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdd5871355e4e3d8f29335736c6f9b70600ac226f51a19395af5062de4c14c6. 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/QZMEM2306771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4b4fc05188a6df2134bec448abf26092e99384d87a632db9c5eff212721f31. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZDA72470692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fab851868ac8f6d27f7de60abe05d6d4ea4962a029b3955c8e7493c053f8ea. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMEN2496609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3010648d05cbc6360218604d2db81f8b81e847646d4bb806c6d9ca2011a7a588. 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/QZK6F2475074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e40a17b7b79400b992663e0a0e2c7c37cf7bf9562f7031fe3e1ec2f78af7aae. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZK6F2475075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98508efbfd262983dfea3c8341a5557d013a2767b8d00aa5461e9997f79edbdc. 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/QZK6F2475076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc06311ef957bca434c1dfc4c84855278c98fe1374140bde8bcfebaa13c2146. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZK6F2475077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc22165aacbf244a36e87ab7de64e7a26a93f1dff1b5d89e367a9609d139f4f. 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/QZK6F2475078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2c8a0576e19dc8fa7f472b0f903a8c4334415826792731ba1c221a7870c793. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN32501324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3170784dd8fded4c1e837ff248d4c19b69ba77b51f907f60e2288f4b2a70582f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZHN32501326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62b2baa5d93e09a98eb5df7eca5209b179bad421cc7b546b98894c3203349da. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:26Z), 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/QZHN32501327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a2681c3d586f16d2ba128749078bfbeb1a477401d348e4ee88b582aef5380c. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZHN32501328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d04a6dba428f1cf37bdb4541362642ed58c24883a32cf26b57278886161f8d. 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/QZHN32501329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67099e77eece818732c58204f1d45e596066611f01f90404b6efcd96806c6b6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN32501330.