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 0x8642a8e8ec97f943186d78d20c4caa3e03140802c71df4d0d78233d61b859515. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc69fed8-d632-4d09-ac30-5840804b2317.json and https://artists.proofprofile.net/proofs/artist/bc69fed8-d632-4d09-ac30-5840804b2317.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 0x74071dabe7c3ba61011de04f15593b137ebf9c189d1001006bb4263dfbbdbf73. 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/QM3DF2206326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0b6099bd86cb323a6330de5b6e1686793d231529042a36f54d0d4b5b84cf61. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QMANG2216845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb05168fd08c9c44f9826ac4a4643b22b97cbcae30176ce713c96f2d8b38537. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QMANG2201495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8b951824aeef7b71b9811d99733fb1124a88edfccabf36d14c9779f694ed4f. 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/QMANG2259741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55370179074edc5ccfbe5626cee38f3a2c1b538707bc7a1c34b74546b8d2e260. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:38:18Z), 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/QMANG2296604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f22fa2c0e0d5ef06f4bd4c1eb165c78099829dc7972f914be0917bd20d6dc9b. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QMANG2235619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6161f287296ccf6c180e09ecfc368e864a0d1681218005df742a51ac4734790b. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QMANG2411434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b37b1d53bf9e3856c6c18453288ff6cf834305f9a8ce291c8aa02140282dc20. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:37:30Z), 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/USANG2439387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567becc3911794484e0335c79771223ffd50807bb3191ac036f839d52e5a107e. 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/QMANG2441659.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bb2c47b5a9a5342dfabebd01f7714951f9a49ea991ff1d9eaa57fc95754dfe. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QM3DF2447628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f08aa315f10c46c52c29e6746f7a45f7182d13032b0784dd91932f7681e23b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USANG2479631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732a134dd8d72e9dde4338c5fab61f13dcb91169186b216556cb829dc30d7019. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMANG2489783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274440429c61e8e9dd2611993845ee64b9f7e50e2c71a2d916ee2e7383863072. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM3DF2428581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4178daa51fba22d4e51a81ee4f8fb5d3fbddf8a828e8064044cdef8b6e39ebde. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:48:08Z), 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/QM3DF2459819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3ed697356f369cbd6baa7af13af88ca0febe6826b7c34d7ed33ef379c1d67c. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QMANG2426408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54c7f9d24db94949d252b22bc4665732ba36cd858cd8401bf62c78a2669f111. 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/US3DF2546459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dba5e32be3e7e29c496426ed3a0c814ae6fdfa632a082046a9f9b818881280. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMANG2589525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1b69497a8cbd604f56af8b00057a2a60659ac88babb17c9259fac81527276c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:56:47Z), 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/QM3DF2596030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf4a049113587c637b4ccadc4c8e510e3b9ab355f3b17f5e0b008bdfad56870. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:23:53Z), 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/QM3DF2519006.
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