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 0xe3fb2f4c00782271a1780cbc627ffc9587a660adfa1aed7f594f515d450deec2. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9e5a8df-d090-4e93-8e81-b69fb0ffc20f.json and https://artists.proofprofile.net/proofs/artist/b9e5a8df-d090-4e93-8e81-b69fb0ffc20f.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 0x3aed4d8f282d8dca872d38d08640032978e19a0e68049eb1c841e9219f8f951d. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:24:22Z), 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/JPU802300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eba3f6bb100a4fca79bc33ab9152fc2d89e8e9be9595b19967de996994520b7. 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/JPU802300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd35d2a8bba6f4e8540253cd054eb1c5da0163819ebb577701aad3bf5599e056. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/JPU802300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaaa85265f4519f736fdeff5aa98e286b640919c04a0ecd4a6c2fc79a599d689. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/JPU802300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075c7521594b0d67f2f90c8952b6853ca6c3009e736e01ff7c12bd501cc50b4f. 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/JPU802300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34829a02eab821a03b0a0269e3716e8491e766be82469b6e918fcf04064be5a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPU802400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3400535a205968c6a3c720ae053617626f152497f44d11d495d66863985b2560. 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/JPU802400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34829a02eab821a03b0a0269e3716e8491e766be82469b6e918fcf04064be5a. 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/JPU802400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cf6e48017f454c3498d6ea5add1511a6a1ff14487ae3c1ac5018d613fb51f9. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/JPU802400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f7a5bd32cf13d66174ada7fec81386e086e026381a18b84c40f64b8f56ae88. 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/JPU802400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28533bb5044c7a39cdbd288279290a9f7c64ab7070c14b0cf13b4e51b241fcf4. 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/JPU802400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29aa8890142f651e51b074d82aab8e6275b51f94da0340c75b2b82c0582bb11. 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/JPU802400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf55914f5f77c756bea833fa3f67a99f116818bb5a6c4adf5831bae270489d52. 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/JPU802400038.