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 0x2e903e24e06d8b95fb6ff00db8799222e59b57d0bfa5fe3611e40b227fdbd45a. 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/479316f3-77c0-438f-bbb7-d3bfd7e42e4f.json and https://artists.proofprofile.net/proofs/artist/479316f3-77c0-438f-bbb7-d3bfd7e42e4f.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 0x4978f86f8aa362d245ba7e8560731f9545bad11d769e4b64d11cfb742a26a4aa. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/TCACO1684114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23653d5afc30543aea7d8ca454d3a761d2b51c94c88d3b4e10d8dda427da36e1. 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/TCADB1714482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a70b16270ba72a29c9b0915524ba9e321fdcbbec1a7586b5c15bac2cbcc76a5. 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/TCADG1798390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49f93158cae190a6740dc47c0a72dabde5ca9d48f7ad5994e03ffb664d9d8dd. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:53:30Z), 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/TCADI1776955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cc5c57d89a598e6986fbbf2e7bdc023a6c05efcbbb1d5d4248e917b0967536. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCADI1776959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a0f3e5dd16b74830cb3191558356793e0d46306f3c1bfabe93138c034f44c7. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QM24S1824258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af70d46408da544bd00bc3eae9fbacd0b9589f1b6229829c8fee730caa12329. 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/QM24S1916852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fb855d184047e6acdd10c9ee0030a4d7483539df87d9dc7c09c9be146dd70a. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QM24S1922239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c00c2572c29627c36cbb7be49b155e91ee7dbc0d694fa9883b49491c91590c0. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QM24S2000326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc52bd0c85b7119aa6d79ad4b22b86991cc1bda545404e20516288fcff134c3a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM24S2103215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a6317418d05fd43fbab1e4cbba885570c98aa9269da6877a9d43853ab8671d. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QM24S2106371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eaec37a79d1264024bdbb430071201872d2f589d2b1aa21eb4cb2de21408e1. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QM24S2206818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea711ce4ecb157d436778d8aa0f6d2105e4cb71bc943048b8b065c83a486006f. 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/QM24S2302318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30148e3fbd641dff9920b441ca737b060cef991fff0dd3b602d48875281b5cb7. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QM24S2401407.
They Might've Even Loved Me (Re:Imagination)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0781d121d9e9cc629f5b319a2cdff810fe3428c6165f010b4585f46ceb440c45. 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/TCAEC1989824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06979a54b4787ba6efe6f9fbde515305e0a209f9bdc35acc39ea368fb4b7f5a. 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/QZHN31956414.