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 0xea43cdc61fdbec48993ca6edd4c9d2dc51534abcb962b125efcff0136dbb0e4c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a53a0b26-2335-46ae-9525-aeacd7ee42a7.json and https://artists.proofprofile.net/proofs/artist/a53a0b26-2335-46ae-9525-aeacd7ee42a7.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 0xc29d2c9a4d244586f4f95f1aac5a0ec4826ca999d3047f9911c15cac3c9c3b39. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEQ022000433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272ce339930944685d4918abc8efd865b0dd11d53e13e72f8c4240932636c580. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US83Z2233619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424254a565c640713bf62391bd3567a8ca99c249edb348e948ef7a7e6937954c. 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/US83Z2233620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84813aca6703540ba97dcba161d1610e967583e65a8b911e5ea2bf7a03bbb9b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:44:42Z), 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/US83Z2233621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be44a28057879b99b19d740e77758401d22d7192a274f64f0291352000244a1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:55:11Z), 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/FR6NC2330660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0df9ca2ddd498df9980777da78d5073de465aa22d542061ce2afd4058a6d708. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/FR6NC2330690.
Sea Of Voices (OIBAF & Samuel Wallen Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2485c73a42c30ff629b4ee588e8032ada9969adb5a114aceed2dd1e78fa238c6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR6NC2330730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4080c91ecc059fe9a595f3231a38c4f283dc88d60ca014f6095292b9a26cca17. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/US83Z2422210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813e9b54a13d7142e3ab02be1bbd5e25903116c630e4e4d2d2ec19756205fe0f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR6NC2330670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c48b293d5abe93953d7d8e1c58e7c4363233352140aa344ff58f272a1ac7b5. 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/US83Z2129767.
Hypnotized - Mark Hoffen's Stellar Disco Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f44f8f8d003b26c6908ff9863199b6e382414d87fcf9c3b001b1fabc0ed3d2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKQU2357475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e422282503de28e2db1fde3e6a3dd5bc7db0f56edb23b86b24a88c7262ea92. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEEC33500676.