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 0x49b29d9016a15a5819db59e4ce93c093fbb507267ef7da276bae076de22750cf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc4e3245-9dc1-4a3a-8f19-4ef42148ddd0.json and https://artists.proofprofile.net/proofs/artist/dc4e3245-9dc1-4a3a-8f19-4ef42148ddd0.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 0x89fa8d755a022401dc536f659bc8beb881859e0458fd98cc34fd5bd0d13638c8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPB2494103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e17a08c1638bf5358c6fe701f0dbcd077d929cbb689ed23b0595904dd08acd. 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/TCJPA2499227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f6b7dca1e19315e7007c9582eb825491f98bf173179093053f78cf6caf09e6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCJPZ2492104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0402a978845d2668e4b2442915110aad263c36e28c5295d77d3997fa16455152. 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/TCJPZ2461968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eefad1ab207c7dce2cfd23d92c8ab891ceac593a388951428014831c0c05d9f. 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/TCJPZ2419056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933cb4ba0887c3d735789e819a77e1e0d1e1b4a9f7ea78cb098aa311011193f4. 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/TCJPY2493537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f0692700aba0204bfb9bf2d071b42240ea1a08ab53227c176f9f6cbf46a039. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCJPY2362197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be4e25c086900e70649195206b4cb7cdd1595c4cd12d05d3981c72905e3ada4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCJPY2493539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd98ee82279f9a30a05837e0f3eee14b741795e764f2e85b775c89001af1938. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/TCJPY2493529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05eb3accd448cc4f75e1921840df70ece3f7c40217012012b5beaa8eb648de7e. 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/TCJPY2373026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf8f4ec7a00519619355619299285c79a5fb640f98789324be1e9e7bf8a96a4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPY2317229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae90bd7266a24e96ba101a1227c771f4cc73cd142f3e3c7c6f62662981ec914. 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/TCJPY2318764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523a584fe2eb4c5eeccd8c76d60c4b1b549ec7a8cddabe21961d313587358a56. 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/JP92N2279526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3df8d6f3b04e8a26e9a8675b83b86abb5db7d64255efddb53abcb85c8c94b3. 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/JP92N2248467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5e225fec6be11d59c73682c822fcc58af6b520e732b0fd9e91f55c3e81514b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JP92N2242504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a695593e877af1b0882dda18604c29653835a4e7b9bc95bd12c9e0297bd922. 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/JP92N2242503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5e225fec6be11d59c73682c822fcc58af6b520e732b0fd9e91f55c3e81514b. 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/JP92N2242504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c0eca8b2bd2c7586e815b0ede5934957c2f4fe6ecd6d21fca72c20db6141aa. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JP92N2232693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a7806cb74d4a74948f36468ae1f79b4ebdcfd73a5b3e04418c8b5070a7d9f0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAII2437037.