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 0xe729e450740814ac62bddd6974ab51dcb06d5d58dade33dfc666e050c6395050. 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/bb17225a-d60d-4a95-8e2c-942c191855d5.json and https://artists.proofprofile.net/proofs/artist/bb17225a-d60d-4a95-8e2c-942c191855d5.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 0x56066d9358a16cdfb84a815afd01d8aecdbbf8c10a69ce9a721309d24d82515b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CH3132116096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbd8feaf6ba635ea07fe88517b5ca785c3b2a3b658301b7993a251d857592d6. 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/CH3132116345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b54fe50a84d47e7d8dffb3595ddd03ee927640bb945bac1f3472687a1be312f. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USA2P2228554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b54fe50a84d47e7d8dffb3595ddd03ee927640bb945bac1f3472687a1be312f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USA2P2228554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6cbb2dab922a4bb8d22356bec548df2201d9dba7d851019ada3313d9c50d7b. 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/CH3132217054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e43842a36ab8091db82fc947101f61c303072ca3fc31e7667f28b145a6e9623. 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/CH3132217055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd781eb3ae71d73ac282728062a5bc83716cf6de33677e21f55dff614673e5b7c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA2P2300673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe81dbf9390b74e415119711da374a37e34d745bda1ffed5cd7e1ec8a7c995a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2P2326973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe81dbf9390b74e415119711da374a37e34d745bda1ffed5cd7e1ec8a7c995a. 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/USA2P2326973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ff05896d29fbe240f6b395cf884eb531a47e171eb15dbab07d7f7fe593987c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLHR22400384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90baa81366a561094cdb0ac9b13e2848507932128dcc323bfad3ea9e4a3c1d21. 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/NLHR22400568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fbcb20910b6c5a4a8ec593bc364ce9efcc8449d93d8daa845c9e2128609790. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/BCZZU2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a4600ae9145efe8e61e1e7d71fdf17461f54159f8740d5001419bad56b0bad. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USA2P2431015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a4600ae9145efe8e61e1e7d71fdf17461f54159f8740d5001419bad56b0bad. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USA2P2431015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c993796c5b43713d3d0c103ed9d3dcf8e911987258c5bae2636ea3faaa8671. 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/BCZZU2400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523f8ea0c67dee5482bf5e79175ffc354c086fd5b25d9d0cd7c8d1d7b2512d04. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBLV62418549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7950f7b0bc3daf02705636e6affac2df7c2876a03f0cb8168500f50b3249722e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NLE712500087.