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 0x5d6695e21978b3feea9b885cc2f74fc4c523e048af9b153d7a8b4d9863664b87. 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/201419bd-6baa-4f2e-9a54-c7918bfca7c9.json and https://artists.proofprofile.net/proofs/artist/201419bd-6baa-4f2e-9a54-c7918bfca7c9.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 0x04410affdb43c34ec34094ec086f82f89cdd133aea5c7ae86cc102140490bbf3. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/FRX452171749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042b8e5d2dd4cc016b68836d225694c839a9aebacabdf65e307e62881188a206. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/FRX452171752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98bd10dd30bf4e8ac2c41e7161d55e6f4bcebd4b4dd9ab6a3f64a5d96e8e78c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FRX452171754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d89510c5a69c2c396ae8a25f3303883f1a8d10262a3541a036e29de6e35a6f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FRX452171755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ce55153017f074324de5242979775828278c587bfa6aeb78105c5b2323c523. 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/FRX452171757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47aea516d3dd76362497253f8359235fc829268b1f09988052bf0968ff75a313. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/FRX452171759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d0b88b22a71e0d429ae60ee896bb94f02f7608466f20ac45a79677851152e2. 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/FRX452171760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fc2d35240c34afae000b345dbf0d765c44df249c21c4c6a8fa51782e36c334. 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/FRX452171761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d23e6c3641f2d1439a5cd9002a28eb22cbdbb0bf88d3b2a44ef96a087d1ca6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX452171762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf312ba9c785363396c9a547f96fc57e180c0bc543c07962c1ea22ed17a4ab1b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX452171763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4942f8d247ce7aee28d6fb4420af4f47e46e5f4d368f75eee1130dbc90f8bc. 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/FRX452171764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52db6c18a035c9cc38267439c41d3171ec1f75db327a46721ce5070d438e3a58. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/FRX452171765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1149a8b3d81167ab4be1a077fede76b654e956fb8299d1f7adf9cd9d16e16cf. 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/FRX452171766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9e03fdc91fea2ed2e28fe1e3a5a067748ab67835d16c3b6bd730aab0d07e78. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/FRX452171767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef5a9f26228b8b5302581a0840eda95f1de9213942889e7b2aa5747870e88e1. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/FRX452171768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f7c70329dee75e6bbf4057c0e6c7f0a27c35917b6bfde33fecfc836aa9ac96. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/FRX452171769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739d7f26efc24ad16aed8d234dad60efc213c3579b93da2d342d0048fc570c9b. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/FRX452171770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70437b2ccfa1b40e534add16cf0e1c9d868438247c31305d8b1484cd589533de. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FRX452171771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046890794f6657ed5b8b346816cf2c91bb476995cd5a622c110a401b24aecb91. 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/FRX452171772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdce54516684241d9da9cc4d1b95227cff9aa333894636ba980f576ba1a87d4. 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/FRX452171773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe6f56b3d14e9cc45c46dcb318d4ae8545be42b1dc34c58f154f94f7b62a47e. 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/FRX452171775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44941adf87eef620642467f05520ef86cb19f0a016541bd3e6340e2ef0dfbe83. 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/FRX452171776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5c567f00c0734604b5537d56e13bc40d082267de025db57f434883071dbeeb. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/FRS182110058.
Netvarkos nykštukas ir netikėtas svečias
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f3d5afd03b6c3d84dae0a8fe02146c4185d3c0b0669c3bcf92f161b3e1bd18. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DGA082201341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9028fe4a2028a25e88e82a8c9363ef5ff8b6ca240d2a2e409b3f75400f9c6920. 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/DGA082201349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41927c4247d944e988cfeb37ab7e7d499633af3fed3355a6a6e53cc7abd1ba59. 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/FRX282397051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dac2221edda3ee3b2ed5ef861bcd02fb39102f560579e860962e42cd0531ac4. 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/DGA0P2353170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec1220ab7e3b73a4f4239f494a02caf845786022e05c6891d804a64c917f63e. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DGA0P2353169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b59c92020fe449c2861134784fd63c33916e88f76b58f273494d54fe802b64b. 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/FRX202445620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0bfab19779a3bb291d7ce2cabf1d93a145985987a29709e2c90f64c00f8861. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/FR96X2574723.