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 0x6d75c2f72e94ed5d3085f030e0117896abff74cbb7e71e775227baa83d081586. 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/bb631ad4-c759-44cc-8d0b-6e43ee030290.json and https://artists.proofprofile.net/proofs/artist/bb631ad4-c759-44cc-8d0b-6e43ee030290.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 0xbb32061d0dd877723027f10bb60d8689cf9ad8d30bbabda4c368000ad111928e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:58:36Z), 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/INM431800282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16a826687b82a194d869d52ef5e9945ca4cc95cfa3401fb9e4121994e2b48fa. 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/INM431800294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a19b1a27e613ce0bd9fdf4cfa46966c08a3f02533c607763a35b8e26055d01. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/INM431800295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098fe22848e7f89ecf812d2d76eea059c4f2b542069da265e64a84178052b657. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:07:19Z), 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/INM431800296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1f06f1533916dc042af16b10d63d6762d58bae5485f1d699308d0e7f803b27. 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/INM431800275.
Dumadum Mast Kalandar (From "Code Name Tiranga")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e3a0fc8ab1b9f4c529bc0c7b1318d8190dd2ba76d20ca29e1f24346103a751. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCAGX2329094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71896af55fce29d01760b1324dee54be64e3b98692f0f478accdf2097f1ade6c. 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/INC622300921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1587a8d0e409d35e33887409dc68481ad6bd411b1839382675bd1c527431ed75. 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/AUBEC2477968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f36456c35daf0560d74c32dae49d49885e14741ccb14b447cd2b9cd91614ea. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/AUBEC2364751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73332f4964f4fa474939ed1cb8e3b685cde45d5bed59a6561f7e600bdbfc7b8f. 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/AUBEC2507896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcb7f843dbd85caecbd0a0c2b17a58b5b01d7acc1d1aace394ec81a2b066027. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/AUBEC2507897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceac45db356bd56c2803653c43a1c5cacf3325e8699cd326efde53a4c7ca6270. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:07:20Z), 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/AUBEC2507898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc9e19c491829f32dec2d186c6ebd5f6f3da81f909b7878b49c88ada73adc17. 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/INSD12500833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea90e2b7708c875c6028abac3dc316f4b9c17c8dcca1fc5acc296ed461364087. 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/GXHG92567921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc9da3c3acd344186db9acea6e76c54f40dbb63ff78f06aaad0c16aef33b3d4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GXHND2527677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f5446709f252f8b40d49bc5be8f04fe1e8076b072c497eff65de0e2e70b3b3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/INSD12500974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a076180f881ec3af693ba575a0e4d66486bfbf1aaf9987110e1e2949c46dc57. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX53U2646780.