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 0xbcc903517d50c8b3a052b7fef821d377d72223144ef52ecf833d5501cc301923. 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/bc2358c6-5632-48e1-a6e2-9065990f02ef.json and https://artists.proofprofile.net/proofs/artist/bc2358c6-5632-48e1-a6e2-9065990f02ef.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 0x2613041bb9cbd5a7859226aec8309f3057b531edc3262379cd41d299b2b3ba15. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/MXF331110675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b7db005e911d5d6b80e7a3276e77977b73839d9d1a6550aaea526e079fddc0. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/MXF331110678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e69de450b11c101b12e96d339b433c1ea01139599e41453fce1fb457c77824. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/MXF331110682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d8153e40eb46d63b481cc6519242430933c41f8a41a6be494d32f1d5a91557. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/MXF331110684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bb2d7634fd6c88d8630e08201f18b71d02e927477ff3b784208dc9fc20ddf5. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/MXF331110686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2613041bb9cbd5a7859226aec8309f3057b531edc3262379cd41d299b2b3ba15. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/MXF331110675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b7db005e911d5d6b80e7a3276e77977b73839d9d1a6550aaea526e079fddc0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/MXF331110678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e69de450b11c101b12e96d339b433c1ea01139599e41453fce1fb457c77824. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/MXF331110682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d8153e40eb46d63b481cc6519242430933c41f8a41a6be494d32f1d5a91557. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:58:52Z), 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/MXF331110684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bb2d7634fd6c88d8630e08201f18b71d02e927477ff3b784208dc9fc20ddf5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/MXF331110686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b751a084aefdd16ba68fd2be7036ac45e313dbe2a06ad5072fba3be2d363fee. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/MXF331110665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3174f174479f54e06e7987e8ccd693370a41c42a2229a5e9c585fc6483615d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/MXF331110666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7253a91cf5b2ee2c86b6fd9dcea3dc18cf22df358023a34dde8325347da48df6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/MXF331110667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e2fcca6649904c89fbbefaa2c980253a90c689df8ed823fe8709c105d12618. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/MXF331110670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0700139e47d7c335c2a1e70ea3156f779d79323cee5cf3db25fa122d25dfa42c. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/MXF331110671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48454f868f076e58d3145a8a0c660f58d080f0e99bb8db3edbc2a8813a9919a7. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/MXF331110663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b751a084aefdd16ba68fd2be7036ac45e313dbe2a06ad5072fba3be2d363fee. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:34:48Z), 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/MXF331110665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3174f174479f54e06e7987e8ccd693370a41c42a2229a5e9c585fc6483615d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/MXF331110666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7253a91cf5b2ee2c86b6fd9dcea3dc18cf22df358023a34dde8325347da48df6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/MXF331110667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e2fcca6649904c89fbbefaa2c980253a90c689df8ed823fe8709c105d12618. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:25:14Z), 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/MXF331110670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97f86db377afd759ec55f4995399c5ee3b4f42b632b82a18028fa68c9d9417e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/MXF331110719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393eda8e0dc612dcec02a62f18f92d8a504c6326e3f2a5489d8a8ada25cf966b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/MXF331110721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52e80e6c60821e95c8a2cc2c911ab46499ee0cf8b46d16dd691aa496e013649. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:11Z), 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/MXF331110725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefa5048be11fe09faae23222b40c57e0c06bf477aba32e062b499e59a61225f. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/MXF331110733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97f86db377afd759ec55f4995399c5ee3b4f42b632b82a18028fa68c9d9417e. 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/MXF331110719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393eda8e0dc612dcec02a62f18f92d8a504c6326e3f2a5489d8a8ada25cf966b. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/MXF331110721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52e80e6c60821e95c8a2cc2c911ab46499ee0cf8b46d16dd691aa496e013649. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/MXF331110725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ce1dd3f4ae5661adbd8cfe3506c5b4de8e2fb55502e783d9ebf8e95891f54d. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/MXF331110732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefa5048be11fe09faae23222b40c57e0c06bf477aba32e062b499e59a61225f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:40:26Z), 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/MXF331110733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9633b5fcb1f633ffa7459c5e042af1621ec5fe3231f80c7a0adfd21780eecb12. 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/MXF331110695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9633b5fcb1f633ffa7459c5e042af1621ec5fe3231f80c7a0adfd21780eecb12. 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/MXF331110695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d3edcd94c35d1c3c96f970a82657a514b8eb5665e170645224b70a8f023693. 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/MXF331110709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f71abdf74b8f55cc3fc1a3a075101c125b3ae967c02e2ffb43c13bf41d6bf3b. 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/MXF331110717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d3edcd94c35d1c3c96f970a82657a514b8eb5665e170645224b70a8f023693. 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/MXF331110709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f71abdf74b8f55cc3fc1a3a075101c125b3ae967c02e2ffb43c13bf41d6bf3b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/MXF331110717.