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 0x684b63a0843bd6b9efe18aceb34c9b5138af3cbfa68ca7b4163ce9cca5fb5664. 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/7c10c971-a322-431a-9bad-bb58af6ed3a7.json and https://artists.proofprofile.net/proofs/artist/7c10c971-a322-431a-9bad-bb58af6ed3a7.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 0xba09ea6773d7fb78d38c74ceb7846fc5c504e02478bd77626f38e6c32815d98b. 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/GBSMU2401163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfda605888d984c6e69086a0897d63337e5be776a7e262bccc44d71a85d56c1d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:26:46Z), 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/GBSMU2401164.
PLSCVTGTUAUVGTU — alternativní tresty & opatření
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2770d355e1c78cb832ff4f668a69e0f272637b63056f7fc704a3222cc0e9e77a. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GBSMU6539157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4c5a6bd2ccbb887920263dea8b08b3ad0b5dd52e930a18020db5ab1a53158a. 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/GBSMU6539161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4155c1a68a5acd0fa616e884591ebe97f8c08645d8754cb28c25502a31ddf2. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:08:06Z), 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/GBSMU8682980.
Když máš kamarády, nepotřebuješ nepřátele
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44303596d1df2e1280b9d6d1e058318f2a723b38d87b0109f72e379022d1d47d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:03:44Z), 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/GBSMU8682841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20f73f57ffd85eaccf01931ae060b4cb4e6c4aced00fbd5894e4e0577e4af41. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBSMU8682844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb70a3f6d476f9dd666eb6c5088c3963b2083024cc90c4d4585b65b17c9f9bb. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:07:19Z), 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/GBSMU8682849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974c4a3f4f5f95210fc4eb2ee6ce8d0281857b8ea6ef2f1d4fc33ae71c8bbc9e. 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/QZMHK2308109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79800cd1f89ad0b948a379b7e7bb1cbddfe07dd84c7345a3480a0b305355e49. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:52:58Z), 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/CZA232301609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e60689a4051997b71de444e28f14100529c480d88bd6a8b3ce30930cd1ecdc. 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/CZA232301610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126ab709111f7ab9a8bd18d8c4ca677107a3ade4e4ff50fc66f372e0d884a327. 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/CZA232301612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf495bb9ef4b6babead0f6c849a7a965d1af080d2f4d9a2f1d02590ce842c7ae5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/CZA232301613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ba004eed4f1277a1632b28214782d0fe56cc343f62c786517d17af86830b83. 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/CZA232301616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0219b98c91103ad4bdb24af151aba87150c0821fc1a9aca62e6457e90f8bb9e1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/CZA232301617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb889288958f34dffa5c1754237c952ee228e535c3ae02df5de166c58ee01507d. 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/CZA232301619.