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 0x7e562198753a2c6f7d31e7c751ac4b795dad1e49bbe6f03e5589b7e786132eae. 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/d415a5f0-193a-4d74-ab30-97b23bf1ed72.json and https://artists.proofprofile.net/proofs/artist/d415a5f0-193a-4d74-ab30-97b23bf1ed72.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 0xab15bfab9c98ae8305a968b0347fd0031e36509d1704635658b3c101bf1c548b. 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/FR2X41614867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26f2c4a49ea112db493a01d8c77b5a17ded293f378ec2885d9cacd2b075cae0. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FR2X41614879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ee9b7e8fe588fcc7d77c3246114bdd98cf425ba808f28ed502d8612e7c0438. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/FR2X41614868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb606b1a0ec5f1920c2bda56e7662ecad06f52203d868ebe7a6f727c2f3d0c98c. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/FR2X41614886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7ab4565721755deefa70dd9aa684a4fa8c99a0b0227f407e519162d5716f21. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FR2X41614871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b1e0350b9c5cfbdadb35506c3542b8a28674d7a6aa14289fc74795004b68e9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR2X41614876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b6baf80fc6d9308af0b2804b2ec4aebbebceb384e8ee4dcf1543583d5d8309. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR2X41614874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33277b5a60c0614027ab45946f817bf46f5a0391675e99778a5ca5a9e8a7810a. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/FR2X41614892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f1b3c9a36fe2e14ceec2cbce7147464ee900a957c0acaec3b95fb13c730f19. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR2X41614872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498e1aacddb87d8c1d20888512612c70b6ff9c977036bd5224e7af02cc3fb553. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR2X41614887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd500b0f6d38f87d509ee4e0a237fa91694d80ee1fb34e2374bae3ccc2a7a6611. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR2X41614881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c953f40e8982f9bc10d118a77a51f94b78c14c8c30ac3a25d9bc9fb82c9e061. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FR2X41614893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855d39ab659ac20f9c0fd7f8f4230e0cbed72f6b15fd244c1cc6a622cbe36ec9. 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/FR2X41614869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8f322e36f6a932fa9c5324d76c2b89a1671c93ca80af321ed921b6b8d7b127. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR2X41614882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e44dc46dd84876678393f7b082f5b42314323c2e28126f027b56e1c2bcd8855. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:59:16Z), 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/FR2X41614888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6088ba9f40062dae5bf5f605b518feb5a578fd0cc2974356f1bc1bc9f1c9000e. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:17:48Z), 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/FR2X41614889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9908805309ac1c3af0bbdc2b9efa0e054d9e17caf7fb9c90c5def703d14c5f08. 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/FR2X41614883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a36d4f11805284c54a0df38fe8a88a02cc936496fe5f0185e5da19e7607b10. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR2X41614901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d0daadf7621b7ddb8cdf3b505174ed8d502b954601335d0d0a55f00fe18936. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR2X41614895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610914abf6076d4ad3a7fe234fc06a373cd125acd93c12fec91fc4da480deaf2. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/FR2X41614884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484f4104a98f41b6be72cc570baf4d4ac0ce715d19fc76374aa5e853937cc711. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/FR2X41614890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d66fbe2a60bbcded2521bb86661efc8b59e6e33fa43243b84b920de7c501af4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR2X41614896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79385e345f7468d2b48aaa35a794ae80f3404629bee126b38181a744da3cc9d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR2X41614903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd831121d91afeab3f34ba820c5634602007c2585d3cb841a61fa3fbebcefa672. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR59R1634176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234c4473468a9f1371aeb52202faee3675b6206269010c34c1563cc9f8796d53. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FRX201606808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2245b3c5479271c6c65533658c401eb33f4f50e9c89e31502f03ddb8f7787ebb. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FRX201651254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392d3e051245efd77bda7e8a2b4267f5c1f1e8a8af517d762f82bedf0ce25be4. 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/FR10S1772772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c24de9039fd6a171329e875bb22131e12ce4aeaf1e8b6ea8a332a32eed5a185. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR10S1756112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd5e1c8da32792dbc1958e505aef23c397f440ff693be8861009ea1d7328b78. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX201712217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb28c52bede000adc3af36b5a31350508561b34cdf323d0dc30896a5f61ebce6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMBZ92305572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32d817ec37205321b7c2e71ca6b5187f0d23c964aeb4725e223f1023b94eab0. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DGA092326868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809c60e141664804950f15511457e0bea1e3d4c8a38018695eedb947b38ce8fd. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMFME2325643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe800b6e01740184722573b6fc9427df19f78ee296a511100181a635b70b50ac5. 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/QMFMF2312282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58f257d0cdc999af1838d33f2c2b2b5ae1657cb29e666500f880c8236173648. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/FRX452432209.