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 0x82cbcebc8a9df4c4f80a1475e3ba1d2c10cf52aecedda8dd52f8d8f534835ca8. 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/05932346-6cf9-441f-9c39-a363ae70dec6.json and https://artists.proofprofile.net/proofs/artist/05932346-6cf9-441f-9c39-a363ae70dec6.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 0x6085cc85708974a938d0d4abd87c75bf1bde06966f4272ac701d5998c305fa9f. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/RUA1D2336643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a061aefa8ddb37070e49b7c2ab5d4fb1160276d3aff46d9be67ceade4d11ee. 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/RUA1D2336645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3158e42e9e65adc91fcc707127d6514e670de5a1e7d8b7132dd6f2f5b89545d. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/RUA1D2336646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcab6894fd9da94d561ac826e2e680926a448cc224fd3b6fc44f39c51d0cb321. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/RUA1D2336648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0274f78f97c666c793b27dfae88c65491ec2d61a50d6759f059fac6b148658. 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/RUA1D2490613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3b8741ded1b11c46b69388080bcc5b2555418f6a4efaee594fef186485297c. 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/RUA1D2490614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab2c3040d0036632fa9997433bfeb913f5240b5d6a43f13b8a165d693986fcf. 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/RUA1D2490616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2105b940bfac47a07e87e62773be59584e0083cb21cfc5d5fc2016bd6b90291b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/RUA1D2490619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd019566a91430916f76b60575a5a1d02c7c74adc833bebb3bb006b0a9fc1627c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/RUA1D2490620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1836586eed170d4e4979c56e2a8bad8ead84958ecc208ad74a5dd81f2ec8d3c. 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/DGA062023618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be9731eed0538e2ac401d6c72f71cd95c3a46072f7fbf03cbaf826084b0f8d5. 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/DGA062023619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa70f73dcd571f252654f43e904ea0468eb32ffd6531a236f13da402f9bd42b. 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/DGA062023620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2b547b76e087a6bac1e9f7ed73e1b8ce8f82a018856e47244dbbffda89f879. 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/DGA062023628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff90ce41715c4a314cd5231dc90af073340622658eac890fe86055cceb6b452. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/DGA062023633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152a75a06e0fc2334e131a748f69150c5acfbb970ab6d557dbc0ff272aa3aec2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/RUB732057454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50276c6cc3f00dfc88b34fa7a032fdd51bc96cf41abe17a179a6dbebd0a55353. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR59R2289308.
Короли Абстракта VI - Мультивселенная ЕЖЕ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fac1ca628054a9ce2275ff2e581b370bc5a66c29b0c883d4ac458208edb730. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR2X42545128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209cad7531d745f57ad825630df2ed4cb490359b36e432d995a6dec95d90f2a1. 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/RUAGT2359243.