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 0xfa17cf952dda6945a8aa4ce38f829598bb35499a9876e5c4ba6c0b63f4ac5fad. 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/06ee1907-1342-4bf9-9c95-cfa2419efe67.json and https://artists.proofprofile.net/proofs/artist/06ee1907-1342-4bf9-9c95-cfa2419efe67.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 0xdc6fe2ff2e6b0bab6a0ecccae217b5cc509e2650ca6a15b878dfa6646ae0090b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN32164752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820c8ec8d2974489df79f7140b22f29a44e0a9ac158500ecfd63acc6bdc6fe41. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:56:58Z), 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/QZHN32164755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013a872235706007d22f7765f47a18cd0a63fc2f86343bff4bf24b76903e144a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHN32164757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33393ca1211dc4516504067c791ea8f71516f08b3dd0185ed1ad359c34e43d26. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZTAW2232995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba9cae734d31f368162a527f568e518ef821ee467dd1338c4c376bd94fd8e70. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:04:34Z), 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/QZFZ72394463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdf2b0bb679097ab5a26ad8d49b990e1e6d3c0d3180ce331b9895d9949d2078. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZFZ72394465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6374b01b8e02df98415b82a31610fecbd0f308ac6399e18a69f7e92c46bc230f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZFZ72394466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b02cb6352148d43512812f56806306c7a1f21ce708877f3d5d2dba5cf96d09. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZWFK2334461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d1e6460741487756561592b4b4b3d324f4c1b97a1bf3dc1996190fc75f3d8b. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:58:11Z), 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/QZWFK2334471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b2099875313d2c5e0cbd5eb0ec136a59781cced6cb6463afa11b1f1ec85119. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZDA42466343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d24c24de66d03138a4eeb91d6abc3a8aa46bd259fc6114714fa7eb2a95bdad1. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:01:00Z), 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/QZDA42466344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bab1ae9acd57d392be8ed229c2e146bf9b874b8d3a201fc17a6663c6c9d2da. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:11:39Z), 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/QZDA42466347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13304c5f0eda0ab4ef9b7fb92bc53b273f5b8f6e6304a41a7979a03d8fdfaa4a. 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/QZZ792407466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27a0902a7093004df0a0a2a2720d9a00766e56cc244c1daf671a388b8bebe6a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:31:45Z), 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/QZZ792407467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca2ca4705143c2a5101b0a742e387a482ca2fdbbdd200a56b422b2130730a45. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:58:07Z), 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/QZZ792407468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0d3ad02b50dfe648866a57ba38911daf999e583580bc970a7d1e5a3aeadc95. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/QZZ792407469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc0af396cdcc59a4f2ae3a1f84e41d8e12bc5301ec7f1236ecd95d19499a353. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZZ792407470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8039350699e9b84f304e29d40ba6d145044f959eae1094588f3e002ea35357. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZZ792407471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514384771203697180a45dc592712ca86f4d571a5f88f9a04c8e6ff21b9def05. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:49:38Z), 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/QZZ792407472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3aff8d45f3b675ab8351a5dd04ea9cb2987ce736067c8ef360536906c99f59. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZZ792407473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fc729c1566c0a5f1a4740024b63d8f3f83b9868bbbb2e6c116c4281562d280. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:40:34Z), 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/QZZ792407474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942e4b8a404328dd54a9f024623aea45e3d6078bc6540dfe343aeb16846cf247. 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/QZZ792407477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3e0da9e009cabfe6d85d402e32706a8e98c729535273f441674d8933070ed9. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZZ792407479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2706bc2dfd4493a9e409a18a59881253f6ddfb8eabd5e0bb063b390f1962e980. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZ792407485.