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 0x1980a1a535c65f1b7fdc5dad468c635200320ed9230b12a66635ef9a80000f23. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d63846c-83b9-42be-8364-52eb8632448f.json and https://artists.proofprofile.net/proofs/artist/2d63846c-83b9-42be-8364-52eb8632448f.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 0x8ed27c6fed13f4f9749658ca1f0e97aafde38bb1ea4b94221ac10444da7f8d4f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:25:57Z), 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/QZK6F2503267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dc3ebc0991334413705520768259b229cdfee937ba7d8523ee98911e6e11db. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZK6F2503268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bd3f3742f42f28a1519c4f641a285a6e97a55083960b3afb3a4297b182015d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:06:18Z), 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/QZK6F2503269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d94a9163163751a5b6416228fceac49812d5918ab53c3e6e306a55d6a3d4eea. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:13:50Z), 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/QZK6F2503271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd63065abfb4c2b581a252f849f65c7671012f35f17b168aaa43011a4062657d. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZK6F2503272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14455fc2fcbec4d6d1addc35629996685293854663d3f2d686f24b6ee1f38b21. 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/QZK6F2503273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10be86e74584930a1f5de884a70ba3c4b48eee0a6634d38efffd3c1ec59596c4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZK6F2503275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bd68518603aee58635af509f507671c638498909fd276971193bf4df27f8f4. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZK6F2503276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb812da47938b7b6b262fd945942a996a5036811816e1ffa908716ff2d278b9d5. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:49:01Z), 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/QZK6F2503277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f2b4db26220666f18b3e6f6c110819f18223aa0ff3501cc419322ac550bf84. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6F2503278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0823cf166623df19c9f5411a86d36436ea1a770610aab3b47f741b839711dd8b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6F2503279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdd042ee69dcc3fc4cd5897ce27ef30b42e652f306a2e8774eeb7f99c80e787. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6F2503280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2295cd142d8040d52b245f2188c0961c40e4226f7186782a6c30ba78ee78c532. 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/QZK6F2503281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4381e242c48a58613db796e8cea54304b9f74d24d4276d47356f17515a8774f6. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZK6F2503282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc0855ca0f08c5c7a2843eebdd6d272713f8f841c2dfd0be6e2258bfda4e1a3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:22:04Z), 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/QZK6F2503283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b23e12761f322ed7bff2aa1e9c620be5f36e6dcf1ef1009a1ca447a3e41a07a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZK6F2503284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c9baefaf980748ea36cf7295690feb21478ca03ce6c26dd5f91fa54ab40177. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZK6F2503285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9af36d910b27dbbc241368ce2f4d11b1fe40d45c62abd22a0ce056db740fbd. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:07Z), 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/QZK6F2503286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fff477b1309dd53f776cefd742678ad6fbf382af70add35d219479e32aa98c6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6F2503287.