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 0xb2681cd78c63df02eb98ddb9913c27db2cfd54f9492f3d2a80b214b72593956c. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc787f78-e691-426c-bc99-5e02cc0a12f3.json and https://artists.proofprofile.net/proofs/artist/fc787f78-e691-426c-bc99-5e02cc0a12f3.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 0xdb456853bac31edfcf298330dcdbe4cc77e8545a9aaadaf372f883c4f332581f. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:38:13Z), 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/DEZC62040040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119637f282c3a4194a515fff2fab845bc6f563e405d8aa339a0b35cc02a8d9bf. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEZC62182320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab6a7932fdc214c169fb1824c5f28b2f2aa2c9b61a9e4dcbace0bf931886729. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DEZC62195859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca2d2448ed90e30c9650b3e4fb28df7788b772df04ef288506c8fcca8a2a6f8. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/DEZC62106561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbc65e560c9965e1da0d85073ec6c741ec68268f45320ba8c044ce1a55b3f0d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEZC62134375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34bf50825578c903c27ca63c077d02994b7396cd48865dd827185d619cf297c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEZC62269194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f313c4221120f40d52140e1a24eb674e2f3d253518cc24efc1c075d242cb0ce. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEZC62275382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acdbf2e18d9e5e4faa60e4b3da54c146a06e555dfeb8af6db7ce4f4c8765262. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZC62286885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b86825b0fcbd8e3b2f271ba4429f6ac5d0dd3dc9dfa3749561aeecba8f21bd. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEZC62287473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f538568b09fca20df59d9b3c04e915b3403e0743c5b384807f59731500a54f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:17:58Z), 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/DEZC62295040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ede65402bffd81d3334a28d3c94910165e04895bc0bd1c9194bd90c5cb234b. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:57:44Z), 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/QZWDE2218021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995381fc1992bad1700f0f772619e2b3ee867d348fd0da0c1c76ae40718a9c55. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:39:02Z), 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/QZWDE2218025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637a6dee0f3f4ee62bf15d74c405c7751db0434dcf29a4918342c824c483b6f1. 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/CH7812342778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521e8c29371ac1bd5663c2e817f15cf356ed96b56756352a86fae3fff939ab35. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEZC62327492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cdba4b2fae452ad6febbbae773a5bdae4cafaeea572215a5d80a4aa0599775. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEZC62359811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753d4f85c364c4ed1de89f5afe3928209b088f65ca69c092090b6bd097d80dd3. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:37:57Z), 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/DEZC62577488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fb8b60b0cd4c424522e64ff7f27d8c9616d74f8da565f54f99893445ab8c8f. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/DEZC62588085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48fea4f89b43fff9de8a9823f8fb952c679d5ac8f641f79613deb43ff85379a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZC62510782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13a39e139079d9544ed9c9b3a09bad51a9c8fd3709b9ebec2dae5dbf9fb375c. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:08:59Z), 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/DEZC62514916.