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 0x7a6deb95165bfa149a39dd34bd11c4ce6e7d46f94976ce9bf44a7bc5022e854d. 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/f6ead09e-b130-468b-b51b-bed2cfaa2d43.json and https://artists.proofprofile.net/proofs/artist/f6ead09e-b130-468b-b51b-bed2cfaa2d43.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 0x4c77477cc2b937adcc35c7aeacff1d1e96ab6ac288d69de1bac6ca9aacc4b23a. 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/AEA0D2038345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96520dfcad23e257cdc8ae570b94a9308ef52f87696bc6fb805b8a18c17f41a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/AEA0D2122320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a792b478e2efc05a01d4efd04cbb5540c5b8e2360a4eb90ee7e0ab72387e97f. 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/SMRUS0069673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe498faed3a1566b0a0338d159f01036f6739f8cf7104f0c3873344d80f6f3d6a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUA1H1872386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923c4ca45e43308ade0b886a78620f58f95006c658ccbeaddc521cce339790e9. 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/QZTPX2249647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86431e0d477276740bc792a11ccab45a5c9342f67d86aaf1154d52a9f8712f94. 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/GXBNP2452058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb06e6cf14facdd4ffe095d8b1a5bb47986e191ef884de23254fb5a534e0d9cb. 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/GXBNP2469645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb06e6cf14facdd4ffe095d8b1a5bb47986e191ef884de23254fb5a534e0d9cb. 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/GXBNP2469645.
Ты опять проспал всё лето (Clean version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1ffe055a402425fbcc1b0de9c14b13276b413070decf44c2137ef5edf7df88. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/RUAGV2410834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea69a0de711dd5d55a56c67f68adc0bf865dc4e6adfe862991e5d24576f68328. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/RUAGV2410835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2a436952070e7183ce5765d0dee520be5bebd7f383ecdd2605bf90b04ab318. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/RUAGV2503228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf20dedc3d6735eea6144d1282f3dc543df29b4b393c16fd1c5be3e1ccb78aed. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/RUA1D2572536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fedc4ea04ebb8278283e0803cbed50a49288c727ef0dfbe3a83055a558bbfa3. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZMZ92537485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf610fe5cc96df5b635fe05554739ccdb514dcfb8aee9f9235a03e9875bb3733. 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/RUAGV2511126.