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 0xee2425c1ef3c14714831f1dec91a15c91948fd0d7b569361b8331ed824876bf9. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7b63f9c-94ed-4fcd-8bbf-cbae8b2da677.json and https://artists.proofprofile.net/proofs/artist/b7b63f9c-94ed-4fcd-8bbf-cbae8b2da677.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 0xb77366c9a00c2ea82c9cf8e4660fe715320ff9d255cffcf0426afb9943295012. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/AUJN42200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bba23a933ababffa21239c2d6894bc70fb3bcfffc9a23f8ec702f75b2d66771. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/AUJN42200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb35f13b7acbda20d8fd5bfa317652c7f660aa3fb971ffff54ce6f37d1c62c4b. 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/AUJN42200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d388f943309c8993658211cd53b8cf476404b46d03f7260f0ec777e92d0040. 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/AUJN42200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3524429758ba3cb62204f0ff0f99968ea18585e437ab8c6287e1f925f88514. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/AUJN42200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d39db1bc7f2ab5cffbe40aac39399a45b6ce6ad73e0ca0df524894db03bca4. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/AUJN42200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73215ac2235832e109de4663c632dc0e84d957ef50e78f8f880db203e0f3961b. 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/AUOF22020001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31810478ec80315a1f601d188fce642f83de97540d543e2c9f513e98321a6550. 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/AUOF22020010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588cb14c564960184260a92a2ed9f6f3fa55f3e0d6256a896cdaa7ab6812f3ba. 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/AUOF21910002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb46ce2456803883594e3aafe6c926656f64b56374d1bd8fc90622aed16f9e3f. 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/AUOF21910003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7099398b51a62f0aa3150f297187e87a8c66aa58139ff8a7f55c7f698704b1b4. 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/AUOF21910005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f11f4b00a3fd7c626eaa661f0b022c66a8c5d875019a3c3362932a9f0d38126. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/AUOF21910007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be80403da99bb3f4c1b0267daace2e2bddfdeac43c7fdf6bc5ccd043bf53239. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/AUOF21910008.
Low Fidelity (Songs By Request Volume 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e1c5c12550c12f0e66bc28d88f9b65b1cad38319d9fa5e43fa148d520ce790. 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/AUOF21510004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2520328a266c14221ef3682b57159e6cea94d171fc871a3b0e39ccdbbd3f87. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/AUJN41400001.
There Is Nothing Here That Belongs To You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad06645fa8d05f0d71fe9f25294a95c5ee45f2cdf0785d1af71501cb585e4695. 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/AUJN40200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb446e58babe5555a1d644c7ae9f734f0d8869f712f7e9c0bdb79b00ac2383b. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/AUJN40200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafac7058784bc0e9ab3625fd4f12fd2a1ea3972c76041eb8979daeaf53f97280. 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/AUJN40200005.