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 0xd3ccad187f55cd204de9ecafe875c781426bc2138fd562cfe1148372e43320cc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dac68a0e-b381-4c26-9242-5753e48facc5.json and https://artists.proofprofile.net/proofs/artist/dac68a0e-b381-4c26-9242-5753e48facc5.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 0xfeb2bf83f6d7bdb56f1f55ca5f3de7320a30111ecad3a6993b10882181983c9a. 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/GBXFH2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424b0fa762ffa880a13589c3ed1c4190a55a252d2d1e99c8c61ab7ca188ea8b4. 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/USM1C1900151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3e476f17a0b9cb69b7b254f9d83d2821976d7fdd62b6018603494c6705b3f2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USM1C1800158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebba881d8360399fcf6cd769aaa2398314438bb0bc53124cf86872c7e60251ec. 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/USUM72016703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7234ce4506575068738fca2e6e41bfd1887249aa8254726528d5cf1c24722150. 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/USM1C2000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a19c57d983facb7663a37b60c612bb86050d672a737c8fa3ce8e0a9281b8bd. 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/QMTND1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a02f5393b5c27b6c9bcee57d7d44b551c24008f84e82374d748c9aa700bdfc. 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/QMTND1101649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20985c4a24dd5eb581a6530a0f3036b44b81f58f02b9b8744906f6bab50df25f. 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/USM1C2200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30ee81190168a7c9a847b7e74eb1b959e859b96076555a390a7719c425e4084. 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/USM1C2100134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be84b94f0dea6618d737b584027dd483a71a58ce6b91f20b5ac598f7fdb5261. 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/USM1C2100000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15830660d2664f0ae2f3241431f53b4f2131e501b6c8a7190a83b4082143ea5. 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/USM1C1900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11170031ed64d8f177a66bf858cd7a075949f7fafca0c0ae71e060a807b36c9a. 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/USM1C1900139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d70ece285459f62388f674db60fabf5a4595712ba575c54ce4cf08972ecb248. 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/USM1C1900148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbea94629189ca5b41feffadd4d80978b62b40e3fc9515f37eff76c98256c5d. 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/USM1C1900147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7234ce4506575068738fca2e6e41bfd1887249aa8254726528d5cf1c24722150. 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/USM1C2000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2295df19b6795b2c41cd413e34d08d495c7419b0c5ed1102ab9793c2e46d98df. 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/USM1C1700067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ff2207df7ce15f7a5a018b4c3106f1485ac0e6e88d6c92deee7a319b228115. 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/USM1C1800216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b543bab6003d90d586143e78a5ba9be97e7e09950532a22c9b690ff719ffb2. 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/USM1C1800217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d776dac67aafcf3665e4701b235831127b6af7f2f7cfbe5196912bd8705e25. 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/UKW3Z2401634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ad567bd55d91766d29040707b17826d217f240000e71b01ab77063b2d957ae. 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/TCAHW2408894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7e62ed9a56b9e599a846629ef3c116fca328c455522ef1033585f60759d999. 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/TCAHP2336009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eed9bd2efcd2c07f727870462158b77e83febc22bbe7eb7752cdf9d169652bc. 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/USM1C2200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ccd90208d4b1f7a263ad5c04b63eef8e2051b19332d8f3d7d6115ce5b3bd6e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USM1C2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15830660d2664f0ae2f3241431f53b4f2131e501b6c8a7190a83b4082143ea5. 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/USM1C1900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677c5dd8e0ea8e6240844bb31a210d513cca59c7ecaeeb411cb086a3960adb87. 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/USM1C1800140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2295df19b6795b2c41cd413e34d08d495c7419b0c5ed1102ab9793c2e46d98df. 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/USM1C1700067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e510acfe635d17830c222c19dc8718fc7bfe384e14219d61ba1d7e78d8c864. 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/QMTND2200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e84b4163ef70cc98ca7b55801f24940524a10d33ee46e3a503b3ab400ea991e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA5W2300474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae3bce5365505bc6af0ecdf1551db0d7a092d320bea6fc16d6db71f8c5a4dda. 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/QMTND1101391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfebaac5d2c51d9634d05545d031b6691c57f9c41d0752faf650080fd3ed1d56. 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/USUYG1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcf955a9d5822b04cd9b34eebe9f55f1a1c3a5d248e3f19ce944a6d99fee6dc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMTND2000207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f69357bd66a349f8e51cb6c73283c6ec359e1920499e2a59087f69a7e83c6d. 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/QZHN81973889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebba881d8360399fcf6cd769aaa2398314438bb0bc53124cf86872c7e60251ec. 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/USUM72016703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e510acfe635d17830c222c19dc8718fc7bfe384e14219d61ba1d7e78d8c864. 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/QMTND2200119.