1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xef1a97bf6bd32b9d61181954f0165331a127c83a3ace714af113ae1fb09f8f60. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65c5103b-20c4-4e1c-86e1-6ff2eae3ebe8.json and https://artists.proofprofile.net/proofs/artist/65c5103b-20c4-4e1c-86e1-6ff2eae3ebe8.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 → block OTSBitcoinBlock must exist at that height 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 0xa4c9601e2803f31d11f29647fa4bf7c30d5dbc669e88f6a6b4e76047844300dc. 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/FRX202007271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5ed108cdb517cf6420d056fa73460aa74f9c27122366336cad03e011e6dfbc. 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/FRX202007276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3c3118df6fbdf771f76cbf16a050cf92261911a39c3c2a8d460c9d07d8b224. 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/FRX202007281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e01541745daf6bf44662d5e5df526f38cf3de789dc4494fff17e1845832fe0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRX202007282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bfa233a290a11fc07441a81ca1386b514c5026d8ec4966a7a183571025e2d4. 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/FRX202007283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5d0b7638cea6b294c127824638a89946d8f28d529d403825a064100ce5538a. 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/FR96X2098325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e6c2cdc751b3ddfec5fcf1e097baa67ed470d84278a0de4d47f19ad7916d72. 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/FR96X2098326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f809b34615ef7dec6e0a49f13454b32230648dca8b62cb45f75e54f501ac850. 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/FR96X2098327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3997bd08cee72685295e7514fb65d31fafb27e510b2aa0f90248bdac0ffd26. 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/FRX202007275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddd958292e3dda520031d44c5848c66e68b15f0b825ae5e7f6823b2a1af37d3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRX202007277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e7827382b71ea67300688dd9138e82c3216995fc4e5961489a4a018a2ec6ee. 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/FRX202007279.