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 0x9472708a781711bebf344245d371cb2abc294304732b294b7893796674dcb16b. Chain 2 (Bitcoin): anchored in block 953941 (2026-06-16T11:51:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20b9f095-647b-48dc-bbc2-8ac59db8c202.json and https://artists.proofprofile.net/proofs/artist/20b9f095-647b-48dc-bbc2-8ac59db8c202.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 0x6bf44d47df6157c56a2ca64f4448621d85b7d1609d05f29f6b8fc22f60d775ff. 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/QZWFQ2445693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7dfbbc2fec8dae54259013e9a8f17573ff33f5dc0a392e92461c2de1e68b4b. 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/CH6542240257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdc532d5b48ea9db532031889f2fcea90e130da82de02654bc9ce370687f66c. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/CH6542240258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe961948a4ca7a937ab247424e54c265b58b38147f1512ed401a809cc90b4b4. 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/CH6542240259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0976166114dc781ee8ee3210e6306dc2d5fd1a7c2c4dc83c20321cbe946f4b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH6542240269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59d9c04e600bc176a5900eeeecf5c14e2e13af1f24c19eeace8604c65a4888e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH6542240271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431ea26ca4c55129d7dad99609e2a4be140f9d4919f7bc54637c95da54a29c52. 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/CH6542240273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bb8be6ef5d675927fb0be4ad9ec7bc63276aef03381718fa32e3333e70eb79. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/CH6542240275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f916590ac0db5d5522e4e2b0a4bfa88d86b90b29ac95620cf00fb8203472cf. 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/CH6542240276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad0cfd44a54a5b246522a425904fa9a8bbd42f3e52e5631fd28528f7174b34a. 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/CH6542240277.