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 0x44ccce6c9dd8fe1a853dfa3f5a03a45d9e1044e78491351128a8d0c58e587ba1. 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/81450610-77c2-471d-ba53-3827a7e6e2c0.json and https://artists.proofprofile.net/proofs/artist/81450610-77c2-471d-ba53-3827a7e6e2c0.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 0xe8a84af4c0f58378b3ed9b547e3b7a48022798e644974857959cb6436f3b9349. 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/IEAOR1600043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b66dca5cb72722df36eaea34a845fff0f6087fdefa53377001f04cb335df46. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/IEAOR1600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5abace211e4981eeee6f2a5cf8c3333ca34be03f542baa35228f23ca461de9d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/IEAOR1600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8955a5e54cf3d6252b7d9d838f1486db5e08328d224e424e351a5aa1e0626b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/IEAOR1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5183b025447255c0121b35c55394c018ce23d9501d739b20832c182e89642d5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IEAOR1800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79579b499d41719ac8efaf433e63d55f727131879fa693b60b7b83cf5a1a52cf. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/IEAOR2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f05ab28552ee4de04e842a562a768c23e09055b47059bac217c4dd8d949182e. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/IEAOR2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8e51d9e3dc326d2f8c912b7d9e553f7e8a9ebb31f755300f0008fdbe991de9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:46:12Z), 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/IEAOR2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28d76255adc68323428fbd115fadffd632ee3efac2120d59309452efde78d7d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/IEAOR2100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074ceef9e39b8960b73ffa34684b868aa0ebaa17be629767889a45e98f4106a6. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/USHM22410566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21cb5ba58cd6507e005f45d1309f47fe6a90ca2faae5710371b81795b9bc5d9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USL4R2473822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c21c37b9c1768bc203c6f1c9c7e7148104b940d3b838bdb89876b4f3fcf094. 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/USX9P2445172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d6b46b8f4b0d17ed808e6d2413964307aab1141734ca468f1fb1b9d9dc43a6. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USY242419009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c17c6c680a9dd194d72d86587dc35d4498ed4637b459086fec97334cd97b0e. 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/USCGJ2597021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf1c7fac7869483d0d2b9ca61e65bf98afa2bb82e47524abb743121131abe40. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/USCGJ2597022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d6b46b8f4b0d17ed808e6d2413964307aab1141734ca468f1fb1b9d9dc43a6. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USY242419009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c21c37b9c1768bc203c6f1c9c7e7148104b940d3b838bdb89876b4f3fcf094. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USX9P2445172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21cb5ba58cd6507e005f45d1309f47fe6a90ca2faae5710371b81795b9bc5d9. 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/USL4R2473822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b9ad5764a1b38581e8bd72e1cfcc1177f5f8c78a1d59fc3d1cd3c3ced6a12c. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/USHM82511547.