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 0xd2ac4418d48b9174ff8574c1ffaeb6b2650218845a9f94664f1ca31162057c74. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16ea5fa9-49f5-467d-a354-6b91265e0553.json and https://artists.proofprofile.net/proofs/artist/16ea5fa9-49f5-467d-a354-6b91265e0553.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 0xd94a2e1d26f7e739c8ecf09830a601df3d803000d1e8973de5cfc4c628e2e261. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:26:47Z), 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/QZF452013564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671af278f4a601157f76952d8b42488e913851eb295b48aae7bcd66ba6002f77. 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/KSA012142707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537fd2d81da7728d4aeaa23661aab0d4fc2a0754782ae24e106af2a4526d163d. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/KSA012142705.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24110e73bef779b743b138e8f45e3e169ab10c79115f083c395a48c8e97fbc86. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/KSA012142711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1292948e5b1095dca8f9c99567f8fee52f45aebb05453b567e91ae7bef07930f. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/KSA012142713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cffdcca1db8d16ae131a876f99a106f9a77e056f75f0167b6b2336ec7ead9a. 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/KRMIM2234055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155def1dce459bf9f160c10d2288516429bb9c0945b906d47426863d33b33056. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/KRMIM2444964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06c7ff3a1af6b9245d841c0181872ec5dfa1040b5d3cc0382728a3645a4e59f. 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/KRMIM2444967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d0227a8fb73bd37084da35a5f9820ead370b4a726982d5fdb6c9f61a831eff. 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/KRMIM2444969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62e37f46369b25c5a9c297e95b36dc5cdec6afe0ac1ad522cd69df8c234a187. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/KRMIM2444965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92a1ac2f915492dd7f617c3c687bc5574afb087a84897909182d8841a4255c9. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/KRMIM2444966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b89de3063effb535ba25a8ed1e706a7e7620a451e6b4c163f51553d569fa994. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/KRMIM2444971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd970334fa149412db49160097d66fef7721192b9a1a0a0dcf34cec1edb8e34. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:45:46Z), 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/KRMIM2457000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcedbe4f0820387f1fd1bd4938fb303271bb9e6199af8b47a9f669abe5441f62. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/KRMIM2467397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0724d67883cc3cd3167e9104193ee7b0e63cef97b7658ac576436ba3402ea64. 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/KRMIM2467398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81391a676efc8daf4cb6c6fd03fbc2c15017537ddd37d6fd7247fa3fa6134244. 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/KRMIM2517986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb12500f07f217c2fe2d0a6138cacff24c6d5835fe942d382ef2313d711e346d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/KRMIM2517987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0863ac790f58e9b6d08e4552b5ec27e38a768f6d0a61a7aaa3121561e27366cd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/KRMIM2517988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d8b73147cdd4aafc33c7081cb60f67284dff478911fd11877f7a144f94d561. 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/KRMIM2517990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbd34d7d714a7ac6cf229fcf1687af1474db95f43f59b31bc2dc115a3c4a697. 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/KRMIM2517992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7954c2578100a832d10e2cb2dce0abe54eafffef149683db859722cac11adf67. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/KRMIM2517994.