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 0x512e30f3d50b301f1a594f40b06c2a6f1d836a7c64bc0011b2dfd83af0437a0a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cda961a-614d-467d-bc9f-d0fefde70721.json and https://artists.proofprofile.net/proofs/artist/3cda961a-614d-467d-bc9f-d0fefde70721.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 0x57eae84d6f4f86d5dfe37af2b69838213c70737c689edaabf0b49bda32171da9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6H2007608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d93116cdfe518635b029b1cbdfd27c178befe659147b93e4ae86f1f1f61b3d. 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/QZK6H2007616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2ff9d922fed7de766282a243a30953abf8caf18f691578d536426a942af009. 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/QZK6H2007617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a67ee6465693dba91bdbb5390bb91bad3f818ea940e97d4a4cdfb5548e0c2ca. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZMEP2078500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261539343572ec0f66c95d2b181b734df177014e6bed58084cd69bb3f35ef225. 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/QZES52228861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2e22c0451b197cf22d37fc05435ab20e51ebe84eb9fb7e4b31cd19fc567d78. 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/QZK6N2282052.
Ciężko jest wstać nie patrząc w przeszłość
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b73053de4ad829c7b5ea32314787e9205281c1ed1adf780445bb98343cb7b3d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWZ2219688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e749b0b0e4d8e4b12d86c8ba26a1477c266f1b2692de6a43b1c880de9f5bb24. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZTB32235914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1526d52f407ed8b77b4a39da48359329638e486b89726ce634b03c8a4f4f83e4. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/PLC062253530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf224d041098ad8a510ce7dbb5f7450a624cd8b3dc880002b8810935e25a8cca. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PLC062257487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa074736afe61d9582bbf4bc9824e38a94386e5dd1b5f2eaa075526bfa6aec33f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PLC062373295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e3c0ec3740a232fb1a90655fa9f5c0e907b5d25b8bf2fc3b413434f563375a. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/PLC062400182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6441de33e36f3defbd4b8d972086151b13661e63de4aa31775684277451218. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PLC062426906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152ee13260c4f23af8b80fb6a5a55864ebe0ace7331d73c811cff56744403f1f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PLC062505215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6635cfbbecba13aa8fdcc2e6ee6ce9f58f5b92486b03f7cc184f6180a51aa3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/PLC062507173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb4ff61607146a23437107a3aaef1edaa311254190afe175bdeeb289278122c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PLC062513749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7193a7344f36947901ac415953c33d04b79e5431b742bbccc169e36dd96cf788. 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/PLC062529869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5c46f48b02e26d17f2590a459960913d05c31759265e9b122cdacb68850977. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:06:47Z), 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/PLC062542885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07863dfb2ebcc1983e01dde28779a7b306e42aa19347fcb6a2e047c89169c25e. 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/PLC062550262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc482024b188e0169befb2cf87be1e0e6152161ec01ca73681ed1f26a503f86f0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PL4K02511045.