1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x8373e3c763c4f392898aacf7c63152c7822c68289ca93e8941be7e0a9caf67e4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76ecd7a2-ea5a-4e1f-8c5d-ceea098c2c95.json and https://artists.proofprofile.net/proofs/artist/76ecd7a2-ea5a-4e1f-8c5d-ceea098c2c95.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 → block OTSBitcoinBlock must exist at that height 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 0x39ddf61e5331b880894eb0368fcb34c5d7cabfb9dba8bf12e1bd85ab4e13fccb. 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/DGA072220409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e47192e4cbf5efd00c98dc162eb65a8b9d90cbf02e8faab22b5d3e484c7caa. 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/DGA072220410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d6eef77694b233e0a1b495a97ea4e10e4905f1ab7a58a6a7965115a92695ef. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/DGA072220411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c263d4dff33b9cec40d53d699ffe42db993a8d00eb4db5be180341c8d55204. 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/DGA072220412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a3f012e5704b6e426cac9281fc54dde04d210080c27bfaecca69baca3fe3fc. 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/FRX201709261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf01deedc1b84659d25c3797bcdbff716f87bf48c4d9d49bc56089ffaf32fa42. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FRX201709263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d68864bc23304db734107075e7f8088877051f2c4a13e209b1b9e5a5a7f0f49. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/FRX201808780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2e3df83f737db5f6d69e843bd819be2a9b5851e676b207a70d4c1ead661c6d. 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/FRX201808781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ac66793fead98987b638efee5ae4983260b248cb2c05d55aac0bbec831b693. 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/FRX452291959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2e8b1ff3df9339d16dc4152bf5789a242e5f6acddeb5ba19d1b000b484d6f9. 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/RUAGT2323104.