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 0xaf4b2fe513fbc82f8ca450f0b8c788460c48448fe524e68495bde4ed0850e056. 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/1911b953-bbaa-4ca4-a34d-6234dfe7f174.json and https://artists.proofprofile.net/proofs/artist/1911b953-bbaa-4ca4-a34d-6234dfe7f174.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 0xb775b7bb53ca56b3fae8ece4d83aef1fa409706297907e9da92351a67a5a919f. 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/QZRP42333314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb429b28c2923dc7fa1f44cd31fa54055c62e7084fcfb26cbe88ef5f77cd277. 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/QZRP42333315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fd99c405ceba5a9143adbd5a032b5a60ffde8e0674b93a713f0b982ae240bd. 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/QZRP42333316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3101b1f5747a07b636f8b1668c6c26c0b74b5a2a33c18308bfe7788ce8f021. 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/QZRP42333317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13602d9a31aa3438860579830c4c2c168d03471eded8651650464160ac688ff7. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QZRP42333318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cb52dc39a0d6ca4a39361d21094e9133ad8d1a303d2f0965ae1fb20c64e76c. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZRP42333319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cc21799ffb6b8898785ddee696f15193137d1f776c48fc5ec1ef07237bde37. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZRP42333320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7d71141ebc7d50f2baf5030c11c0838f8b8cce117196833ddae65b830764d5. 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/QZHN42197668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa719c476d4c428e6934f059c0c6a3126c5265612a3edf817d3e0396c68c3c07a. 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/QZK6P1981991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2a651c33d8e62fc6fc633daa34c68dc879d23f8c9d0ecb04207cd728a123f7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFYZ1949801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ecb4ef224bb7d9e17c7048c2a3470849b47e9b751ad10a6f845864494d73ba. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:52:33Z), 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/CA4H11113295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0097038698234c23b26d253d2afddb077ca3ebe683e42cccdafcf0a6feae2517. 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/QZFYZ1912961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a13c676023638552c820e75668df57c644955ea9bc1799f9d5c0a24be589e79. 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/QZFYZ1912965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2fcce173a874e0368b252106e4eb6ac75f27e0148e556fa23ba16d5703d2d0. 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/QZFYZ1912966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfb8934d109db66107517934930f930b2d71826059cb809b68cbefd253a4f36. 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/QZFYZ1927072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3cf7a3004db16de0d90d5edc854127a8495026193ad3ab47abbea5a1c2b2de. 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/QZFYZ1927074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d2d638062e11074720d102feef276f100c938847dba0a51b878d31edc7db5f. 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/QZFYZ1927076.
မတ်ေတာ၏သမုဒ္ဒရာ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bae627f99f0c15a8b18456ef0f60959362ba308ba63323ead7f8c37c93d038. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBSMU8262549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94f52a3ea96fb15733c1affa67149755b84f1fd401a770795abc4be83ef19c5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBSMU8262551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32f0f57c4a6e08141482d79abe79ed64afe927526b69ea5c140f86299833d13. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBSMU8262552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8217d2974dc77e5ce094dbcbdad5373b7fb75cf52611e291dfff83f80c1426. 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/USA2P1952771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dac112aa89b53831331946845bd2a8c382bb19717f971966572847a96328f0f. 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/USA2P1952791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47ee74b7072b9be07f10a9674013788f7a7d98a6e4b120a8907ce0bb42b2c6c. 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/USA2P1952799.