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 0xa1be474f70b7b304dc71231dca5b4af0d0ed853c0b70d6e82ddde929f5eb46f6. 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/ee45d31d-68c6-4c92-884e-4393fca6a70a.json and https://artists.proofprofile.net/proofs/artist/ee45d31d-68c6-4c92-884e-4393fca6a70a.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 0x625a025c51f99a6d1217435bf4364b25df180a224de2a8f1ca4847164ec3acf0. 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/FRR642201662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c121d404dcf7adf71d98b790a23161a8dae4f8460d1a278d94fd4eee2ab541. 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/FRR642201663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22583ae0666c931b11f4d1d63c9ddef5d2257371a52b8d1b37c6add9270c1e8c. 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/FRR642201664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1327b1300fe4e443c718384891c3a923d79f9c448c6affee6ceda034d67c7d. 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/FRR642201665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d2f30ff84416c0aa5113ffd525eb081d7784e28b8b134f12957797200f3246. 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/FRR642101492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa3ec3ea84648c1e85cc248fb20344c5694c89bf111ec29f3c7abee24c619b2. 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/FRR642101412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4bd1f23dca58a9ddd36d1d7bd40a8f865e3f4054323212ffdca067e1b20ffc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRR642101329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dae8fb263606e9dd2309feb04dc4e1a3696d7be5b4366195c3faca544280c4c. 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/FRR642101494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b3fc5e5a9668bb34875ec41b35c40251981d4f964500af49ff21ceb86298ca. 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/FRR642101451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81330c34fec33cef3a5e119f89930da944382171be87181b99d7f379b37a743c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRR642101497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f477dd44821a99d15a2e9e4dc692662aff19af86023c41a21258efd3267d0f. 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/FRR642101498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f42bf95e8ed3ab6940ee32e5a9f11f4fa23ece058b4cb68a63afbe0822523f. 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/QZB4J1821691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81330c34fec33cef3a5e119f89930da944382171be87181b99d7f379b37a743c. 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/FRR642101497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f477dd44821a99d15a2e9e4dc692662aff19af86023c41a21258efd3267d0f. 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/FRR642101498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b3fc5e5a9668bb34875ec41b35c40251981d4f964500af49ff21ceb86298ca. 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/FRR642101451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa3ec3ea84648c1e85cc248fb20344c5694c89bf111ec29f3c7abee24c619b2. 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/FRR642101412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4bd1f23dca58a9ddd36d1d7bd40a8f865e3f4054323212ffdca067e1b20ffc. 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/FRR642101329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e33406bf00f3459f3ca880ee281816f035a4fc2ed8b0e301fecc53781961d8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9NG2100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62d20f85f14a7c0d716c5df8d28db7a6dc6ab02908a0a435e17dd9068860f8d. 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/FR9W12325303.