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 0xaa6287ff65fc02450fe9c1b880ac3f15e835e531386f75ecf6a44b894fafd436. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9626978-d17a-43b9-a290-bbac4153f5c5.json and https://artists.proofprofile.net/proofs/artist/e9626978-d17a-43b9-a290-bbac4153f5c5.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 0x30da5a23cd62b65296cf05fff671a73d8571182f5427128b4b388f4bad375cb8. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/RESPW1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72a9b344237e0dfa5e37ebf9451e16f3576532fc171805af37e2cc3419665a0. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:28:39Z), 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/RESPW1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ae81cc55b20b869fc44f8660d9e4fa887b7d7d8b2c3ad62ab9a3e3ba93afdc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/VLFMN8100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc5849045449569446f8cee22dbcec13264c563ecc44e7938c30fd3a2014b30. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/VLFMN8100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2580588599b9f714f834b975d1530d5571d8aac095cc81a1eaa60a0351578b95. 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/RESPW1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22a117cb2a5e7c51ac58cf55a6f795a14548a05fe9c18c15431a2bfea9cf29f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RESPW1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb54984c4678030b5a3adb54473d16729763c6852898529bd06120f7648806da. 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/REZPW1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dab51d70734c880ad12c341e906711580eca040bbf8b37ead34770aea04755a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/RESPW1200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac347ac12f5fac75ba82612fecbbdbe1ba9a5d4bfb2e4d839c52749ce00d3ac8. 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/RESPW1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b77748c6117328f338df382696c5c1e43215c142f59c771d35347ec2b39ed17. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/RESPW1100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fcb53d5f3f885f4d3bdd65d8633e34375de950e77e489d4a3739583810bb14. 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/RESPW1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a130f27a623269ef74838de299867e9475480a3f23cccfcf7b9c914690f2ab. 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/RESPW1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ecb48c53340df70cf779a7df02bf2a92afcf6b1d2b84563e362c3aff58da14. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/RESPW1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e660e5adb74917447d27a3742200b3a9bb9b613b0a5e465371d7580797862f8. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/RESPW1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4621b710611b18415e425f99e823d9de3110996cd72b1c2577e6928f4d191d81. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:37:45Z), 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/RESPW1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8949747dd6dc6c5b92cbac92d09adf336a406ed2dcdfcdbed4516d4516f07023. 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/RESPW1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22329b3228808dfe56398dbd1e4bb43c945eb7af8462cfb8df34100e9c606543. 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/RESPW1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69bc22d4c43f66d1960b1a37f4d25da27190ed77d1f3f78bfbcc715cb8077b3. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/RESPW1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe5a2c2c87bc1f104b39975aeeef3f2cfe23d376d65cb368a681840355cf6c2. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/RESPW1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c476a2994ffe51fa9012ac634ce91e74444b8813d0b73a18f7acc205fbb4184. 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/RESPW1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc453800b6d1c4ed23301a96c6e3b3aabb7665803b7cd9767beeb4b6744b9bc11. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/RESPW2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd575d4b7f614059ecfd90135637f6bdc0e895ef38cf0433ffb78a7d792dd4a72. 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/RESPW1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb18907aeb8f2b6f747a60a786337da67f68887feb1cae967dec79a386f440a. 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/RESPW1100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8bb2208516b842d9da0b6159e5bad9347b7b75cdd539e5c660d2503f6aa7d8. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/RESPW1100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9073fa2a20079f89ba9d99e26bea682e933c16c89d2b8b47881e66e9dc5024b3. 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/RESPW1200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1087bec782391d3c3eb0a54e8d6aad1f961c83ef8dca17f6f57d4b9820e62f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:34:28Z), 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/RESPW1600006.