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 0x37a1b7940ea794b0ba5dc96045fcb9387931418a89816aea39076684bff21081. 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/535ee820-9a98-4950-83bb-e9950c75e270.json and https://artists.proofprofile.net/proofs/artist/535ee820-9a98-4950-83bb-e9950c75e270.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 0xfdaab44104735d690fb23347c6d160f08bc1d2028e1371b2baeab3c7d6d4128d. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/FR9W10701522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4eb3e267f2dd0ff75ae6ca0d17d64bc8b232d94afbd5254d1a4fdfbfe5705c3. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/FR9W10804097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0338ddebb6ccef3241af3a620972b96123498e9b1a7dcbf5d07bc84dc501688d. 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/FR9W10804100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b6581400351a5c2e6c87293e8c8fa5d5f885e6d43811c4c7dded442b0606fd. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/FR9W10905113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1085fdbb1a9e2e114a1f78837a7dfaca9f48b798888e33fb43850abe917ae6de. 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/FR9W11708510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3937d1b9a95cb31e51be622fd0f7e76ed8bc35ddc2df1524b9a16d313f9e4f. 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/FR9W11824891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd0377db1869783041d59bd0964df1f2d2742153e91e24d0f92927a410a7dfb. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:45Z), 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/FR9W11824892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3b3b2dea122a72c82ce00530e8d31808a0deefaddbcb4a476281f174d741e6. 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/FR9W11824893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fed83872c74fcf8e6f06b470c0e3a7f90aef42ab9502f1f878a67e99d0ea0e. 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/FR9W11826715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648fb964e6f77168599be09dafaabb81a624f8d1736a5c138f8af4c0dd25ce48. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:36:04Z), 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/FR9W11824898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdba4fd720236b506675c3fe849c1eb4854f4ebdefe206405c86eb1c361c1d3. 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/FR9W11824900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb499a669cd85a637bef73ab2d8554c5ea6c9f49d8a472eb5ccbc11948a734fd1. 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/FRIDO2012268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0617661d82d23a679f9e4f9b155c49a61a5e7c892e46c14473f585967fb10e2f. 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/FRS710800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0617661d82d23a679f9e4f9b155c49a61a5e7c892e46c14473f585967fb10e2f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRS710800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f0ae6a6093facb4564ab4088af7ffece9a3b5eeb1e0bec8292acd969640557. 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/GBLFP2068616.