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 0x92c174c67e63c2c49d7d47f8873479e61a7b59608a6a30f0b62c54b4f38e798b. 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/584b2be7-606c-43b0-bcca-e4430f328275.json and https://artists.proofprofile.net/proofs/artist/584b2be7-606c-43b0-bcca-e4430f328275.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 0xbcfbf8ef3d7798f53db2a04327811602ea7b2304f0a876f838c8e990bd7e615f. 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/GBMA22483720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68a109136454702a16b54a401fe78265b193da22671a39532c30aa6c345b760. 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/GBMA22483722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168f048a8bc4bced87a94692e4ad1dd47806377081166743053a5710df6620ae. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:51:13Z), 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/GBMA22483723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627ec49dc1cacec2943bd1371a45274e7600e6763bd9589d06951ce198bf8241. 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/GBMA22483724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a6b8fddc6784759bcb27c3b5ba14524ce3cbf8a7b647f363e25fc73def083b. 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/GBMA22483725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa098649a9e18e30df34b03bf6b66627f9f1c72c7609053448800c421669093d. 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/GBMA22483727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0686e9bc95069c6c3ea95b28b658fd3e01cd08e3c4b10fc37df62fe5d4445d65. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GBMA22483729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4add175b028508457f5944d4127b2897b8485f3c1d9e08ff91c1acae498b23d7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBMA22483730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b3e2df8449342e5b7e3a07aa7eb8d89cef67695fd02fd240c6ebb1941d963a. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/GBMA22483731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c39c410e09684b3e1dd53b51e6fa3eeef6a5ea733a27d3a41f2f7034918eb6. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/GBMA22483732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fcc7455b642bb1fa04cece554d4c2bf94396d2a33c494a10f6be24c6a45d3f. 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/GBMA22483733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae012122a2323362cd29f3b14c0e11c845191151855323030eb0e89a77c25214. 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/GBMA22483734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da82c64fa08777aa3062a5a2f9bdb435a2de9fa31c6c53732a46d84a640afd5. 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/GBLFP2552143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4076d43f5b561d649a92dcadf64da9cdee0cc029fa74d19ec638d9a0acfce973. 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/GBLFP2552116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfc4d945c6fdcc313c446ab78df2a74667a4d447466866742fb308c80439ff4. 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/GBLFP2551817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bafe3147c840d9da32fbe0d0807c166c4d16e33488519cba7df36d4f4d8a89. 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/GBLFP2552186.