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 0xe3c2dd8ed6e674f7681e6b8178c8c0e00b43b7b1d4212d8c1c23cb5151f2711c. 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/62128da5-5592-4321-812f-bd9f48b96c37.json and https://artists.proofprofile.net/proofs/artist/62128da5-5592-4321-812f-bd9f48b96c37.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 0x40d6246d47fd11b3014a0f97b6e47242b45a1641933000583ac25af1c56176d7. 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/GX7WH2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005e2da85d06bba457b59c3e473a8e22e4b17913f1af0ac46492b050b7d8ce0d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GX7WH2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560409b8435bd6607cb11050c58f17dda5b9a273068e45b425b4b85f93602fd7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GX7WH2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded91df93c4b550cd13ea648f6afe6f0b5b4436987ee49050b602b7badc0a785. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GX7WH2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d94dfdb2b14b32941826deb824b34fd22c5a5da15a1b45dd6bbac0f13b6ca8d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GX7WH2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb837c3d1e521ed996d54e3e29fef9ca730f608e5e9856d3d11ce37c4a4d1709b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GX7WH2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995f9460bcd68ae14e1285dfe526f7e99b0d3001d53ed025388a480766a7f560. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GX7WH2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560409b8435bd6607cb11050c58f17dda5b9a273068e45b425b4b85f93602fd7. 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/GX7WH2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded91df93c4b550cd13ea648f6afe6f0b5b4436987ee49050b602b7badc0a785. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GX7WH2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995f9460bcd68ae14e1285dfe526f7e99b0d3001d53ed025388a480766a7f560. 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/GX7WH2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb837c3d1e521ed996d54e3e29fef9ca730f608e5e9856d3d11ce37c4a4d1709b. 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/GX7WH2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005e2da85d06bba457b59c3e473a8e22e4b17913f1af0ac46492b050b7d8ce0d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GX7WH2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded91df93c4b550cd13ea648f6afe6f0b5b4436987ee49050b602b7badc0a785. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX7WH2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995f9460bcd68ae14e1285dfe526f7e99b0d3001d53ed025388a480766a7f560. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GX7WH2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005e2da85d06bba457b59c3e473a8e22e4b17913f1af0ac46492b050b7d8ce0d. 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/GX7WH2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995f9460bcd68ae14e1285dfe526f7e99b0d3001d53ed025388a480766a7f560. 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/GX7WH2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb837c3d1e521ed996d54e3e29fef9ca730f608e5e9856d3d11ce37c4a4d1709b. 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/GX7WH2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005e2da85d06bba457b59c3e473a8e22e4b17913f1af0ac46492b050b7d8ce0d. 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/GX7WH2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc538f2bb0856d7ee0f500c1014317378cb02a22433fefd13840765bbc66fa2c6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX7WH2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5404a4283d435c21a6669defc0e8bfd79df59c1e596fa775e4c389e278a0f424. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZTAT2164030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe422d712f1b2e5e7f7ec0bc78789999aec2aa40acc5b21b717fc0e1a9369d022. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNWR2164758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3f9835d50e643cf69451052ff5342dc41572e7f73210b95daaf2cbe5c483f0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6G2053586.