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 0x6718c0ca7c8d6e54d11cfb8e76db6ece3f5f49fa34e674556e31d87f06ba621a. 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/356e0f11-c6eb-4f50-9566-1318336d5a77.json and https://artists.proofprofile.net/proofs/artist/356e0f11-c6eb-4f50-9566-1318336d5a77.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 0x7cb2cc6a00b29935669b7f1affcba8ef9846a8981dc3e1f511b39212ee377ebc. 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/QZWDE2407376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ff9a1ce924fa1c52a0e6399c22c833f92db048b131e50bb92b99b382a35f34. 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/QZWDE2327879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff6ae6cf07e3fe4e07f0d837061ed32de8096e7e71995e3fdeb61573b657e10. 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/QZWDE2407379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760bceb311acda823de2d254a61f323e096a2c2241a464904d0da70664dcec3f. 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/QZWDE2424818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7ea2e67da4eee7d5d840b8a29d74d96af146999d3e54b52f348d510ed2fd6a. 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/QZWDD2314384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9e478d0873584af56a74eb14fa760b373df44a8a076a36b5390a71d07044db. 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/QZMHN2260503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844e90a1a07c3258e1d27b614c01a102bfe793b9adb9453ae6080e57ae23a67c. 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/QZMHM2258064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a5940be9917f56ad4ecca6f0b4927b81c80f0cec40bfab5242f1fccbdf0667. 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/QZMHL2470563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad02a7e59a70eada7f840555e35540d04ebb4b9d307e4e28766b53bf127d1e9b. 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/GBLPF6787256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22cca8df3689ece7d52fce1600e2b798ce20e1cd836f624b86269a454bfe5d5. 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/FR9W12403537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84280028fd45499c2c8d2d32cff7f2b1b360a499183e627b3d2681344529470. 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/ES71G2334717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ff9a1ce924fa1c52a0e6399c22c833f92db048b131e50bb92b99b382a35f34. 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/QZWDE2327879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7ea2e67da4eee7d5d840b8a29d74d96af146999d3e54b52f348d510ed2fd6a. 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/QZWDD2314384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24610cf85ab3559638f97014e879dc3302d61d0cd2bae9c25179f909933ae013. 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/GB8KE2309348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b85caaeaedacb9c2a004f4ca7efdebcbe5bb7839e13c6ed8fbecf41b594dd17. 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/TCAHD2357840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1233d2725dfcdd2ef9e269e9e21cab56143e02502f9885d28af1408001fe24cf. 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/ATR981295566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a2b8188edcc2f45c696099a03eb2db6af498bc369adcee6f441355cfaf6a5d. 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/TCAHA2373796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf024ba6ecfdbb03c9f57de995c97d644f6c31f6111e78cfe0887fed4ee27365. 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/TCAHA2310206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1233d2725dfcdd2ef9e269e9e21cab56143e02502f9885d28af1408001fe24cf. 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/ATR981295566.