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 0x34ef0b80b557bb0a2240fecb115c7006b1f566bdd145158e35c0e004d0cf0e00. 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/78c28a1c-65c9-42ee-ae80-71d98aaecad2.json and https://artists.proofprofile.net/proofs/artist/78c28a1c-65c9-42ee-ae80-71d98aaecad2.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 0xf7f267bc06c72de6bd32350b6e88a4b3aeb9feab46199776db5d34089608c8eb. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNJW2556601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e64f4e9d79d7701dab52761669d4841a5c9ec268349da2f26ad3d0e631e75a. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZNJW2556602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f930edd25e57d392458037cb1d0878f5ce592b6e52f063fc7277af8b4f47d4d. 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/QZNJW2556603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f376ccc61496471aefce0ec146dd88b8ca2ec0cb3656523aee246b22434884b. 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/QZNJW2556604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df8a23cdefefdc7b8bc2c32f37b05b333a89176525703d4299e214054e3ea2d. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:36:30Z), 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/QZNJW2556605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d403e3b2c447c2ec18bde60b7e08b9804b105bc0ff271d00a7c6ecdda92d27. 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/QZNJW2556606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a2959c31f2fa2a9a9bbb230998c458cc8754a0de54eb536f15f791b06247f9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:18:55Z), 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/QZNJW2556607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2e7e6a2c6ef32cf654b954cbd689c5ab35314f9026b9b74df783bbd57e38bc. 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/QZNJW2556608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662d494182368a839ad98440dd8145f3ced1adf39fc75281ddead29070eef82a. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZNJW2556609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82997bc7c1365a1d952b3d33d14b1cd5b1a96e7f8a927009e4c7a0368edfe5f3. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/QZNJW2556610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7ac978f95bb8c9d00adaccb4320541ee558ddc9c2654b1695f2c74a2cd3e9d. 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/QZNJW2556611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7385293e08a1c77ca090e5a58ad42b63727e5f5229d2b7639182cceed789aa82. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZNJW2556612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d7d5cf950f5604265bc4b08c9826b67080920d1f8a01bc67776aee8b663158. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZNJW2556613.