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 0xea9340f7885810559ef071ada44a3801feace560c20c8dfffb743023c86c35f7. 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/6bf5661f-0d63-439e-9448-c9f8c59bf863.json and https://artists.proofprofile.net/proofs/artist/6bf5661f-0d63-439e-9448-c9f8c59bf863.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 0xe5c0c131dcf7d70ef5acd2c08b5b5ab1ae507aba827c2bab96d4e50211200f05. 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/NLA240605216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd564333a9a8425605a4cf20029cb3409680283517cea18f34f978178ba020c42. 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/NLA240303000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34855ffb5d8b005dfaf3cbc04cbb84d2e2987ba8811c05b54fdb6347c5e681b. 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/NLA240605219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d0b25746a4df34e6a9f3ed127b04d1cb33c5f8a9fa606a126ebd62f00e10dc. 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/NLA240605218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574fe6f1e6bfe9b3e74ab6807aca28b85ca103dae656772711e1ceeab222d51a. 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/NLA240305431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6060abb4a89a21d7bcf0f6d5a1b11b57a64e07ba8f324dc0ea65a96f84920184. 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/NLA240305433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839d0ad12838d821c503719c77ad6945a9c290826d8ad150ef7b86edcc669427. 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/NLA240305434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a7e81021bd6506d76133ce0156666d787096ee4e720c3cde6388bccd6ff9a3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLA240305435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db3197b8777affe5bb0c6ccd2bef8300a077d24825213afeb01e3c80c7b274e. 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/NLA240305436.