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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffabf2408ea4c6d0910b8b025656106554617f31b513dd1ae9e90404a5c97ae9. 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/c3131553-59a2-4c98-967e-7dbd4167d87e.json and https://artists.proofprofile.net/proofs/artist/c3131553-59a2-4c98-967e-7dbd4167d87e.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd76702d6a7ffa025e0df6a3f9d8af8ee58f05913453098e7abe7dd8b49794ac. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZK6M2035957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdceb9b4698efa6033987449db82462a8627a6228c8414d7317c070c57b2c42f5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZK6M2035958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3406bd197189948f5c17988b341e478334514d1b1fe1285272f53f3b1ac5efe2. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZNWV2073387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6189d0d77c04f22e38f0bec318ad2e306600d046bd8aea4adf7b873b82005673. 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/QZFYW2168383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7eb7917a7a23862e8d6971366fdd5390d5cc520a3489c0178f1286b08e32af9. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZFYW2168386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a3a04ca42b541fa5400c66df592ad288f62653791b8dfb48365ce546a429b6. 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/QZDA52243631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900188b3984a16680d1267a9cf729cc655d8f3792f4446de539cd6c260243286. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZDA52243632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e17ee923fa6d030cff610cb8fc700b85e9109914e0551155132e152d68d39a3. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZDA52243633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8707ad54f8585d3ad11fd5ab66259080a80caf69824766ae03a1cebd222ced71. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/QZDA52243634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aff14f5f1548ec6ea12b3cb10e97ada0149384a6bbfd86e168a606f6794d395. 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/QZDA62255499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa431af203549ebb81f41f8483eb5b19b1b1e1f06c921a2151c8c31ba2d334cd7. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZDA62255500.
.​.​. а с​м​е​р​т​ь в​в​і​й​ш​л​а у т​е​б​е в​ж​е д​а​в​н​о
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c86605fcc7caef07616f7f0a4e770704214d20e26c86962e6bdcab013e89886. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/QZMEN2350901.
Є т​і​л​ь​к​и с​м​е​р​т​ь​, є т​і​л​ь​к​и т​ь​м​а
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0db53bb2b3893fda91134bae5753b34fa4ad68bbd59143172550f7cc951a4fc. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZMEM2450277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc27262a92a1c448d939da5adfcc0a0e3bb2b3d64501e89f14f6566f731cfb3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZMEM2450278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1fd993f9b6734347f5809a97393668ebfa984853a316e4b7634fe538009a76. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZMEM2450279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2daa937fca1cd0dfa801425e545fbc468f5ee1c77ae1eca26656379bee933108. 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/QZMEM2450281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6998f5cd3df2a8b36aa60a73ea8c6612aa5d9a2b2531477ff93a1c1bcc63b9d1. 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/QZTB72486693.