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 0x5a0eaf35f09a3e97513c18116f161f390e92efa493af0c53f3d94dc0aadf904c. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/619d241f-52b3-4907-82e2-fc3dff6665c9.json and https://artists.proofprofile.net/proofs/artist/619d241f-52b3-4907-82e2-fc3dff6665c9.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 0xc439d4d1266d7fd5ca7260c13f398f8a8a6989bf26024b740c84b6d47da6abee. 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/GBCEL2000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516658091c421e2050565c2aca680e9eed8c7445f3fb13db70457512d6c1dfd0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBCEL2000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541dafb5542eb782214f25b7a06ae0cd674996356a79b6024d4e2395db53abf8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBCEL2000124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b3c8248c00f9ef7a72b1a04571dd3ca18b9b277c903c65fd7490edfbefff34. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBCEL2000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd8399b1d4ad365d8e6c10e668b6ee62dd450bfb1b9edb1544d7a85c6786c7b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBCEL2000126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf784888bf9e9b10c780aada2a289e06c5581cf79d97a96fb267148fed83d0e0e. 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/GBCEL2000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd343be39e0b8b5ff39f7f46a62d2919db27f01299bdc1df70a982e20033ebfac. 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/GBCEL2000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae2beea125129de9da065e1353836426ee98c343ba5a75b3b374399553f2fab. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBCEL2000130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1383df436bfa4194ad2076dbb31afde9ea4005d520d90f5e33b47dcff9bba3af. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBCEL2000131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6c82e26a7b772b60290da83c91fc706ed42c9ddfefab148579204e92280a7e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBCEL2000132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622cabd0006534a177bdb52cb8e06d7af2a9c6ff19ca21962a6d23d4143ff764. 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/GBCEL1800380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835385b762d6e77efb4b4a1ab3f185c64e5722c2e2c7accd8353bf9ec74d2f60. 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/GBCEL1800384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e63c3ed54cb184683ccd4ca940317674154a9c98997abc5255408649790b6c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBCEL1800386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10262dc958788307c0304f58ddeeadf0f97cd008ffe383ebe8825892f52dd04. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBCEL2100618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516658091c421e2050565c2aca680e9eed8c7445f3fb13db70457512d6c1dfd0. 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/GBCEL2000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc439d4d1266d7fd5ca7260c13f398f8a8a6989bf26024b740c84b6d47da6abee. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBCEL2000121.