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 0x08b233976fba7d3f672d322a673a746e0bfcff212e46e9cb42d89cc12258ea55. 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/c0b13f41-117a-45d8-aa50-de63cea2c847.json and https://artists.proofprofile.net/proofs/artist/c0b13f41-117a-45d8-aa50-de63cea2c847.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 0x1d95f37e8c144e579747df5f82bb7477a217349f458e7d712719ed70332c639e. 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/BX4IU2208340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1884ad6687b8001d68807319378a2dabd16de2d06b797a0af40678afc89a3e6b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SGB502310851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14e927c327a95c91531e7dce25213383333311ccc4509217a8b4bf281b6f1aa. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:06:56Z), 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/BKSAI2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c35d7a4f1851103832f84a7b6a10e1df969d15d8a5fbfffed2dab9a8930d59. 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/BKSAI2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c38c60bcf133edec6c53801cd552642db51096eb9aaae3fe44a762e58ac0725. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BKSAI2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc8e69b0544df341595c211cc9de2117b2e60ac993540a18069d9ee503aa0ba. 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/SGB502459287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d649a4f716b743671a971cfe9c8b3cff40eac34aab859c5d95f707a6ca3853. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BKSAI2400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe0873c465d65bb4748b62c6abfe485b0fd768e96944a0ceddd4414606e32c3. 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/BKSAI2400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3afa8685b5a8753c594246df00902e3e18228434f2e6439863cb2d3a45d21a7. 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/BKSAI2400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5385d05f7f9f850eea2eb91f4a01b846e5a3bab4aea3cfea9288c5e881075cd5. 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/BKSAI2400158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431db960b4b509c44d9d1b6f7a85a3e120285d1454f7675d5c0c2ee9521d3688. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BKSAI2400189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a88bbc7ab01c10744f0fa6c90b564f3414f1937863c7958cef50ee561e6e37b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BKSAI2400221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d44a8747a37d81ce876c96354c8213db7a2d80c0c64e3f86ea9c5812b317fc. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:37:23Z), 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/BKSAI2500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b835638fd2b94a42959d4760520526239bde27f837051cd70575b34a7a87b6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKSAI2300141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cdbdacd9ecfe7335e3fd92a52dd9df015c560f6fe0159e06ea1d2700d084dc. 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/BX4IU2349047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9a86e542d8410865a179f7bc19cedd1f041dd018d90077ebb81f7a20cb114d. 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/BKSAI2500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86922918f20bb8edf045d3e10b91c65048aba37246d07249080236ae29b8d19b. 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/BKSAI2400208.