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 0x18bb0c5433ea7d72f0d9c52c51dc5c796c6ae4e69359be35cf0c37f7fcd1d877. 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/b770fea3-2029-47a3-a11a-0f1935d70459.json and https://artists.proofprofile.net/proofs/artist/b770fea3-2029-47a3-a11a-0f1935d70459.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 0x5877442dcced9398e194337f09993d8fe393f4e52b63e3c67f7473db68187d96. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPV752002492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacb713c43dcc6fc0458144f45aed157857d6fb21ce681c12d65a0b4b3e76a08. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/JPV752104726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2b85cb1cb998cea4595df7b11005481b0e4c879145548d155a07927fd7349e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:34:51Z), 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/JPX602200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbc1fc7dca8a05a9b48b23bee1e7e889672b6c9b5c32dffcd6634acc3894310. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/JPX602200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b6073689b1976bd943b2dc7d9db639c45e8ea09ac064ceb0ed464e572e027a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/JPX602200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fecd5591f4a7f7a55565197c967593c31e358ac7e438ea3034cdfa8216612f8. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:34:54Z), 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/TCJPT2253371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074737768cfb4362af399e999c0e04e2cd7e3d3ff48c53d5ea3d25192e263b3f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPX602200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fb9545dec901c784ddc491ede5a1c95d7057f4786f027b202f60a41d2a77c6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPPC02312587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf5705e82acdcdc34f6249f99266cf6b05309efce5e3da3cc5b07dff161cb66. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPPC02411393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b4160eb83f8cf9eae3047ee70941e23e323e3aa31ed60cb7655fb447c6d20d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPPC02411104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fb9545dec901c784ddc491ede5a1c95d7057f4786f027b202f60a41d2a77c6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPPC02312587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926f9728969c46e09bca1bfe51c8b60576c6c1cac2473ac9271fa25cbbfea12e. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/JPPC02411394.