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 0x181756aae98f86a70d414cbebca9f0362d617c3bc540eda40347fff49e7664bb. 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/90c784d4-6025-4bed-bea8-87146daf8477.json and https://artists.proofprofile.net/proofs/artist/90c784d4-6025-4bed-bea8-87146daf8477.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 0x18614fcd4c514f2dc7c6918cd9cf943801278da4270d2dfbbc9ba4d7acf6af65. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USDY41788397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5481866cd5bd655052a0c3cdc4172347e2f62c33fc9023aee7c7aa0c72cb3ea. 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/USDY41942081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fd3de04a7992053bc9407a2277f790e29e309a2f5691f91631757c2866afad. 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/QZHN51993255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02de15736cc9a0d0aa07b7587871958fa0bd7ec3c9ab6143ce38f14ba88bdb86. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN72018154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca501a0c1ce47e040d9269a85105fdf1398e4ed50787121aad986490180dd1d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZMEP2073760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1219552bd5ec6244ce16d912db600080f660bc8eee918dcdb8c053b894ef8a. 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/QZEQU2128035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b8f9520b323b38dcac2847e0cc1b981c66e82b7e0fdddb45c26e50635a32e2. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZEQU2267919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7830a74a626614cafbd15fc611e80d1164d296399e4b6ddc1c8ff3a9a49d5ab. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/USA2P2306492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bb354489477cda8f13d2b578d1c7a571e3973ebd0a470c868209e90bf32f98. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USA2P2317196.
‘Tis The Damn Season (Rosemary's Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1123d1cc7159853d15385839b2fef523e5a9c2fdaf8039cb2a68a04639f9b17a. 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/USA2P2351335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5608dc4a9ba8adbd56eddd63e2cac4ca7d13745a3ae841d7667fa5fc041cd3ff. 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/SE6SA2441992.