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 0x67e4bedf98b1a96c8f4db2d07310634761edf52cdbe95a52920ea8d47cf33f23. 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/1d5b4ec9-13f1-479a-b215-54e46e1b4263.json and https://artists.proofprofile.net/proofs/artist/1d5b4ec9-13f1-479a-b215-54e46e1b4263.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 0xd752adb732443ef684ba992cb69144fa2291285059b38eccf96d84a6bc3f4d99. 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/FIUM72100136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0f5096f3aa6d9cea1746e51c042d65dc0f3c67da4e728ee84c907a47e4d64e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTAW2253751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e7ad50828462f40f317a566a2e690a61babb3bea6e71dc3ea8009d7cecfe39. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:55Z), 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/QZTAW2253752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8504c6ec734423d33d76355505447b222535b560c949db2a86ac9ed364fea712. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:32:06Z), 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/QZTAW2253753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb04817e63f2361169cebac2b669870121cb96868eccf299d02d5284557d3ad. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZTAW2253754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573df5c17ee6649c65c17d7ad2e7e8b995fd640282b7e6a791e4e53d8ab52a3d. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZTB32250887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56cfc1ef236fa3fe38ecbef28576c375af0894896b5035c49c1860d574e6690. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZHN32318332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f3e898fcf842ea5c7211a89869d38355e812810b63a2cbc0d2a7379d3fe678. 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/FIPEB2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0345c0ed84ecc12b604507617d3fa03065f6d92fd56c9228d254bfc6e92cf744. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:31:37Z), 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/FIPEB2400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc84f516607da8ea238f32a6f8c5d82458c13cc7181431c1e9d94ed8ee0317db. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:33:51Z), 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/FIPEB2400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54184c94e221a232a57170780329e349551597e48a64b8960f409234087da9a3. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/FIPEB2400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c671d0607dc9abf89e0274a43259cb8b6973c84e8c03db16bdc819883818611. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FIPEB2400147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9babbd8a6faca3ba891cf1ada6d3e12dccd533a447752d68f3aabc7f5d9840. 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/FIPEB2400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efbda196c4dfd817374e40c20da1516a3c1c152ad4d40a16fa7d8bb49012dd3. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FIPEB2400154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99c8a84b49649615e4154ca476b0474c1869522a5364b72598247f9226f890e. 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/FIPEB2400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f06126c8d0a1488248479a1ddc2dd3698e9d5cfdc92171226ec45cb4c2f418. 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/FIUM72400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f06126c8d0a1488248479a1ddc2dd3698e9d5cfdc92171226ec45cb4c2f418. 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/FIUM72400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e58f41bba759de45c3d2f7a4c896a0542f62296f7c48733cbcdaf635b9d1f61. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FIBAR2500006.