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 0x2a6aeba6c3aa489f673c0d9fbaa40a55761b3aef43e192fc73188ad831aa0571. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/473fa58c-afa0-475c-9cd6-714bfe037afc.json and https://artists.proofprofile.net/proofs/artist/473fa58c-afa0-475c-9cd6-714bfe037afc.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 0x4d463817cc808938f48f4f467f49b5104e42d2fb7357f59d799da10de06a9bc3. 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/ILMB00096957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51238954205d5bad8bd4037cdd771fb24468b9cc1f3de296d71c3a4c357a569. 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/IL4671000267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc840105926fb48779a07f40aa4c1be2725629a70e30bed301731dd9c6359d2. 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/IL4431600687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229e3cc0597fde54cd1def83f86da5cde49ee060f61fa10f7c598ed92b4b32c2. 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/IL4431600725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e8b83a729689b036105c3507131a5dc4f914b962cbeb14161db84c47b5ffa3. 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/IL4431600755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232356f1d62e7c1972059aa8d6a618eda17bbcad0fca331ff29c963a26240f2a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:49:06Z), 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/IL7192000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d764c6c9787c437e00b70fad3712ecc7bdd1f0e4b098cf7ee5bf46ebcb060f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/IL7192100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12fc4240a01f1b1a14d9c9a390915fa621d72d26c510e31a9271a3696493ef5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/IL6432200867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bd427a65e9bf2afdb73be1eb44c4f0d757c9f97768391956cf01f47ae69574. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/IL6432200883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b4c81df3e8f54d203457f5d5c2e2dbed3f9468df9f29e79874225bfa22dc7e. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:08:45Z), 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/IL6432500920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fe8492a43d8f229d52a3051fa1d9f4923637e1e07700f8fbf6cb42473961ea. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/IL6432500921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03880f86340c6986a2b2ed0037d7c605d0770bbd446176fd8aa485c4cadfe748. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/IL6432500922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bcb90f6c3210491ce0614994b5afa5f4bb1a3c2e37043eb1230713af5d79fe. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/IL6432500916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b4c81df3e8f54d203457f5d5c2e2dbed3f9468df9f29e79874225bfa22dc7e. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:02:20Z), 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/IL6432500920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4719f51b029d3fae15c66ae612e9ffd4cfb8159fe284f15fc795eac6226c4d. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/IL7192501706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b096727061c8e2b006c01bd1bbfeb8ac4494cba2c3309dec82cdbdb44efcc9. 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/IL1471401181.