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 0xec07fb776c355acf5eea5b821e6f7384cb2ff66ae95e04e3bbd052b734dd92d9. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/041215b7-cebe-4f81-9d1f-59cefe095758.json and https://artists.proofprofile.net/proofs/artist/041215b7-cebe-4f81-9d1f-59cefe095758.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 0x5cb98e8cf9edc82d77b5b8cb9a7437a50e7f6c55756496df617abed36665ca18. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA2P2025338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b640d07c6d8de7015117af3d9ecbc38b2103247d19a77f68a0b30451b751e8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USA2P2025342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ffac6480b0778449a624b76e55604b6c254eaf7829e5fc3ee09f23909f4265. 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/QZTB42295160.
Dead & Gone: The Sequel (Mo' Dead Mo' Gone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe912ea41e2dfaf6ec0e7cb3662b4cdc4d7355a094aaaf45587125ec08054e480. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZDA42317892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d1b2da8eb8b4007f61797043296adfa192b8987acc7515814ac35bd87d64c6. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZDA62387133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d6e5cccf98cabf9548b34e25c9b40a78e412da6bef70d43f2f16cfcab575de. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA62387134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260df2bd88bf9c6b973f9647837c9b14af0670f898cc6044fa03927b114e65e3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US94C0526001.
Old Keys - Sound Acres Live Acoustic Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd784a1fe3f42c2530760eefe3f3072b1174c7d669a1993c8cd1d54a42e0f6924. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US94C0526002.
D.R.E.A.M. (Depression Ruins Everything Around Me)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8034a2eb43d985a1ed3941ca30d9cc55c9ab18ea079d4a32dec49197bb57d6a5. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/US94C0526302.