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 0xb8ddb9d955b3ac3d75bb4013324bbd253b94d5ac44bb328df1d572a961d4ecae. 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/b022a250-6c6c-4e67-b65c-5fb8037011d9.json and https://artists.proofprofile.net/proofs/artist/b022a250-6c6c-4e67-b65c-5fb8037011d9.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 0xede9ae7a7b0601248bfa442acea3dee03ac059247a1036827564e39585292ab1. 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/FRX762102691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9013bad620391123af4e33ec82322ffb37a6ffe5804b348c782da607b5e451. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T11:05:18Z), 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/GBLPF6710312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bad0ba36c362aa6871abf556de92dfd4f58f0c4f29fc0dcebad08889ae5d2ec. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FR59R2365534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f1b2d24022ce77529cbda25e5652c38a669a5e17ab2dd9c95508f61de1e61b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/RUAGV2306866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd23adcf683f39e984f5d5743d735b1c2699fce4ad657f18499404241093e970. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/RUA1D2499848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2a76c0a13afd8e1cf1184ed0403d507cec3c4c4d7fbbcd654e433d8494fd92. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUAGV2406502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c0a45740b9e72574135886227c77599e9a42e9a35fc33337b302e2a7907519. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/RUB732079195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3237f73bc28813a84a10ec77877ffaa6d7801d69a32ddcf65f880997492d1967. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:22:38Z), 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/QZGLM2569536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253cc8632fff912c77e1e54a27422330d3371c13204abd3796b7803cf4403595. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/RUB732079203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0462ab83199f54f4c3152e04d27502a5fee4121954b6cda19aa9a7630cc0a6c9. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/RUA1D2541355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae30f922a357648a63f490406ca02d2da3cb2e103ed5f34577e7c6743a557d24. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/RUB732079187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482ec665233507d426cbe6cff7741ff6b8a546923bb49ed8391042266d96e591. 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/RUB732079189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8a7ce733f93bea07fd31b16faa9a4ef89e09c342d0704148b854e17eb00532. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUAGT2505271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef5a78cb68c670410b69f1f4000b6a589be7454b4da0fa81218091446a11dfb. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:53:24Z), 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/RUAGT2521450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dac089e893b9da4b0bf36a9572d2bbfa5c94dbbee3b166897f30c7aecc6f3a1. 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/RUAGT2541940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde96a39e2446d4afa94a0ec616985520bc30d257a7690e5c77ca1523554202d. 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/RUB732079201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08eba4dc1112f1881c897b5e5221d498c9a09599c8fa5ff803cf660fa65756e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNJX2590112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10658a161932c6195a444f3aeadfccc7e4d08596c09844a15d35398afe6ae3d2. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:46:34Z), 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/QZNJX2590114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf46cb919692553b58c2323437027ff465e4d2c686372823c4e8405ba22bcbf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUAGT2551999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a0c1987fcda4103918bde8eed3bfa31f6fafcda58c17f21ed493cfdc0b394c. 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/RUB732079197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34f5db0744138b1314826c5d2ab5348e3072c7e7a63f32be8ee7636e9e827e9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/RUB732079185.