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 0x0e3d6b945bfa70fdb1579ba2ae301b85c0315e07395f90afad93d503ffc0c10e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d3356f8-8758-46b5-b67a-df533c2a4e9f.json and https://artists.proofprofile.net/proofs/artist/9d3356f8-8758-46b5-b67a-df533c2a4e9f.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 0x7ddfc71448ffbf6205a751385d8383e9d913f8e85789546ae8139325e12165c6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DELJ81908556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc055b3392e076720cf6449e03593753a3072ff2325442c505045febed9215e1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DELJ81908560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e9c74ff8b3bd5e83dba4c7cf05e51d16fa10ff30c4b8434c762a12cda1f531. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/DELJ82026801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d0450b05c257e5c3d941d9cb9651a4ae24fc5cec9102a08c13e854f65c8549. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/FRX762040864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fed7247c3b2d56c6b97f6687d63e7b2788fc78ca45a624bb015ce87f8fbcbf. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/FR10S2174729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa00a7fd12fd7d5c67ed9db1f92f4626f3234cbb50e9daabf545e7b13624255. 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/FR59R2190854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913ac5dc01a96bfb86a2bdfd811f9dca95e165389b20cf7ae60beb66ac05f3da. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRX762143811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3125fdd4e875f3367f058aba2685d74a3837b57985977ab79a9f9d43341a90. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEZC62210436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3952a15b7a9706438ea6b576e738b8a97f5e36e2da62bf89ebbb359c5ed5e0da. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/DEZC62321979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991482fc9c382d5be178f71bd4538303877fd16ccd11d9dff4e27833f489d146. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEZC62331183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7139df3c89d1d8544dfb425bab2753b8e0e32e2c5da73566045d9229e0cd749a. 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/DEZC62361751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4e133ff8df855c4b1244763cf785e1c367f185c92c4db7397ef057406cb0ad. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:12:15Z), 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/CH7812367006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2628164271fe2f8be94a07c0d4732d2450ef5443db180e0a976d1f999d380580. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CH7812413518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01c28df03884502ce909c6b20a8b6a1081d1180c81c6405d7029f1d42996455. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/CH7812416347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681affdc1263897af0532dfaa9bfede96df9cd34aee06ecd5ad48e240d2257e1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH7812417654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab4ebe9c23e1a91440bec40760f8946d25ebf4510b79cabc73f084a6af5bb18. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/CH7812421628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf9e3f58246f25d74bfe341df88e424fbee609a512e7483fa1b17c669c17a94. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH7812424511.