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 0x508a5fa1e33792751356cf62e8c1544bc40325b8b35590705f108441a7e96209. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7a09ccc-0437-4ef9-9dd9-2610bc00054a.json and https://artists.proofprofile.net/proofs/artist/e7a09ccc-0437-4ef9-9dd9-2610bc00054a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Another Knock At The Door (IYEARA Remixes)
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 0x41202e1d602fe041cad69fbaee531bbfeffa8b042311cd9ace02c67822438e1b. 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/GB9TP2001112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9485be87c37bfa2d2691a1f10406d86fbd221c0409d9f5cc809a59909b394284. 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/GB9TP2001113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccd6c2257c054463c05f35a9ddf958e786e37b47bd79d9f913b06b318bc2b8d. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GB9TP2001114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370a873014aa47e7c82432d42caead52d1b24eb17c6d3b35bb5a54e81fa52d7f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GB9TP2001115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb72abd75631baf48a46e976e16fa63d4bf770386ec46f1416cfb04127c5e30. 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/GB9TP2001116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebe64664492fa1bb701eb3f49a77f8555022d51e2d58acf05e5742500382ac4. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GB9TP2001117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c0fa67e42db0d8cf9a8f0c74ad4e7494dec1efec89bccfdea29fc616ad5083. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/GB9TP2001118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ed179d1b09b1eefa2034342a084247251b1e7c00f97b5f154c92cb0f2500ed. 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/GB9TP2001119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62fbe13fa8256253607a82639e07fa7514ce16489f6af32d8c126dbe5b24634. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GB9TP2001120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9de018c30eb6e88fb35cd7752f47c15bba214828c69f88fe63c1f7ba551af49. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/GB9TP2001121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc725d645571790be395993bc8c94961f9531120f40644feabca9761af961f354. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GB9TP2001122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678229cd12af1a22b6648026e36b284bc907c45ee277e52ff825a81034a56fd9. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GB9TP2001123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c1c418c244bd857af3a6a4368e98e7eeb22cf8fb2859988c8f89b85b5ef6d9. 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/GB9TP2001124.
Two Bells Ringing At Once - IYEARA Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8158b48bb809202374666d6f9bf28986c83f8bc0de50d0449703a36639aae7. 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/GB9TP2001125.