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 0x915cde56135a5fcce4e0ca3729cb26d2a0d45c6e3c201a4f38be591c9a93d59c. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/045998bb-e388-45a9-9e0f-e7298851e514.json and https://artists.proofprofile.net/proofs/artist/045998bb-e388-45a9-9e0f-e7298851e514.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 0xea2537ad6fc0182e8e6f49fbd63c26bf02071e8b1338289c512becc18ae159d9. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZES82372312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa219bf3f397c2598c418499b88ae4ebde542afa042639c56880d9f2bd67d4a12. 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/QZHN62264115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d11a2f2d36a1d2102971b69915240c0a534670b0b5446faf141bfee90a2916f. 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/QZRP52114032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e63308522ce6d3e399e3f299efbdda8c8afc3b82ec57f70d42e369bc120f3f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHNC2116554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116d821839e3664927eda80c474e4d12f546909403701fb82b13fcec205f183f. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZDA52118003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3cef14969fa86e916860ae605d65e12df58fcee64f96b87fa4262a15fe40a1. 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/QZDA52100725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb995e046dabe594755c2ff0679fee5e050c3acf8d173232e15702449a1b930a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE6XX2287350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3752643b579837965f39c88bbc754061ae255b4e5b051b04fc9e12d73c3b2b05. 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/FR10S2445571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f33430967a5f4eec7e2874ded64e6cb69228dcaccf3bbca6d4a65080778efe. 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/QZTAZ2297228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd808714eade5705108ddcc6a6cb7d3e64e8f2efcf7059118e01d8b11a8015633. 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/QZTAZ2359154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399e789bec1eca30fe8893c6133d100246b7192e7628cda12f061e69dffb7faf. 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/QZNWU2330257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e8219610667cdd51a26419836ef8ed42baea9dbf554daa3f88d7e44e15a841. 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/SE62M2122037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb0946fc295f05978afd7d16a577aa4c80dfa969d4f4ef35f7cb6eaa625d922. 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/QZTAS2139486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd4b0fc88c91f39fe470305e98ed874222693860dfb60dcaf8e55d86e277f8a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNWU2177328.