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 0x60ccbb9d8a5afba0ec61f002e889997b38562c8dd11e95d6efb5eb6899e12334. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c055f627-ce8c-43fb-90f1-f7d3a755966c.json and https://artists.proofprofile.net/proofs/artist/c055f627-ce8c-43fb-90f1-f7d3a755966c.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 0x356af881a231a637e964a14960f638acef6eb1fcad9004752b784a35bdb1a7c6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXF012100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e0bffdbbe9f3f8505341204446509f7398890b92bf004b3d85aa452877c536. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MXF012301234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d86f1d321e02d409cd9d90982317635b026f923ce1c1f7e471c821e7746366. 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/ES5152400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5ce72dfbbf8874a6b4fff7ce676a389b6c8378b5333151b880e0e529a45699. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MXF152000152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf501e3446189e852c8a475d55edbf6ca7d0b3e5ddb0d37a1dd2ec08eca37a617. 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/MXF012400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b139d1a1110895f4a138eaa597503a2efda33b381083a8c46fd64cf1445270. 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/MXF012300298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa44a0b20130fed3145aa3adf63352da75222a7262a9711a4383bbde8741a33. 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/MXF012400200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23ccd6cfe94068b48c4717ed02c08746cc4ecc6b1843116d9dcdb566cd1a882. 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/MXF012300633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b1c3f9517e9f445575f24318fa144728657792041cfb3eb7a3a0b629b7a013. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXF012301140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf950e57b825bcc1ee45adcdde3e7f6e45021e12cfd052864c7a9c8e0275eac27. 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/MXF012100174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff732fa10e0ebac41a758fbf5c8404d453542b073dba9b3453783e1573a45611. 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/QZ5AB1921293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd936a54771eb551fc9e261bec8e78f142deebd1faf6e07dcd93d82fed1479b13. 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/MXF012100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcabdd64349fad5606fe591ea5c5106d5057fd134cd16c45deb9e69e3242154. 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/QM4TW2528994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c7c775170b6be6fc6c870fa88137f8a283eda20faeda29f33b4047f4145062. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMDA72438543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe684d7aaec1bc167e66bb1d8a50d8f5c2f362247a6b23685badfcbc7ccf48fd1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSD12400463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa44a0b20130fed3145aa3adf63352da75222a7262a9711a4383bbde8741a33. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MXF012400200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edfdfbf0c8310ea62cdb2869e350575165258ea346de73f9256f88edab93162. 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/US3DF2402226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b1c3f9517e9f445575f24318fa144728657792041cfb3eb7a3a0b629b7a013. 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/MXF012301140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8cef42e16bef429330fa6a5b106306fc116957291153385b97e7783fd577f5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXF012301075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cda6a2acecced4d61c1e57027851f6f01945f73d8e6542602193853d7ae377. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARF102300331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23ccd6cfe94068b48c4717ed02c08746cc4ecc6b1843116d9dcdb566cd1a882. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXF012300633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5617212cd4a45a90f411da93500ec955e859a2f75c25f4b9f2308ec29c02291. 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/QZNJW2359132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbbb5e52f9b1191b5cb30d5ff8729dbe390d806d24b9f2e3bed517fa2087695. 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/ES5022102454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd936a54771eb551fc9e261bec8e78f142deebd1faf6e07dcd93d82fed1479b13. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXF012100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9368cd6646bbd1c54cfedfd842b1462dcfef995f5bf8456ad294c19a457a612f. 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/MXF012100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08b1e5ce3b6774493f851b5c527913a0613c81d4e70a7c4a3f8df4a218f6027. 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/MXF012000119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae80d9ef7feddb1db8f11a7bd24846350fd6d02e22c971644c326d744613534. 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/MXF012000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4510013665ec0c0be8099de4400e0060d66e1a47badb65f559258cb4318c29d8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ5AB1821765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff732fa10e0ebac41a758fbf5c8404d453542b073dba9b3453783e1573a45611. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ5AB1921293.