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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d498c8e5d1dfb63721cfcc33525586008b8356e4e26e3061e017969c6d5f31. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0bbb6375-5d00-4593-95e6-074bb06a4e4a.json and https://artists.proofprofile.net/proofs/artist/0bbb6375-5d00-4593-95e6-074bb06a4e4a.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b19f03dcab92622b1a7c6c0393045859680cd4b320e6dd1e2951428a1a738d. 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/USDXS2104083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c7cefbe97613023e4f4daa078f73e85863a1034b7d4bad825bc5977d38657e. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/USDXS2104084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e6c94ed3b02ab05a62720e6acc227f62cd2f2042a3e331c58e489648715363. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USDXS2104086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d43f7bf2a4910d98541e368a268102fc6121e5250c7a7242e2c5133c862226. 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/USHM91995877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d6f0ab0cabd0210c7420152c4eef189283a99f26e43f9904f1c79b216610ed. 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/USDXS2104089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7c45afb045491bf66e3a75100563c56317649aec6a9039492a8302a5ed387d. 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/USHM91741131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61090c57aeaf2a6fb925b19fbc5233523d94d718ef9d360bf869fe79fdc4eeba. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:59:34Z), 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/USHM91741134.
Major in Ministry Minor in Music, "More" Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3752d5d4ed5ee2a16cdea45be2a9a5abe3c904ac36f18a1e4bca81fb0cf7f15. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USX9P1320230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbc55c58fd1ad33d0a22117ae689485d6eb4e0c361ab9a5e3b179132fc1ab6c. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/USX9P1320232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422a5d58aef6a5944a2a227c789a655a96ccc195686d1266efa5b1b08799fc0f. 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/USX9P1320233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ef6f18e6407725b55662606a9faaf155d8c9f1d7cf6496524cb897222cb9b9. 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/USX9P1320224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d6ffd97fe2e6589bb26748bc0be775ce0b20153c60dc6489f9445a373b29e4. 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/USX9P1320234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b087888ecef7067a4db7604cdbb2c38d5e419ff77c460e2fd0d48b96aaeead8. 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/USX9P1320225.
Major in Ministry, Minor in Music: "The Experience" Live!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c094345b722a738eb91d0e3061ee68f85c48a711b54cd3c6094258c67561a3. 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/TCABX1476515.