1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf74905a524350310161a08be8c5e9ebc0f906217bb60d0cd34f1d11038a65b16. 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/33dc98f3-58d8-4636-b15a-ff62f1b0440f.json and https://artists.proofprofile.net/proofs/artist/33dc98f3-58d8-4636-b15a-ff62f1b0440f.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 → block OTSBitcoinBlock must exist at that height 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 0x12bbc7f27987d7e4231356848f083731f666abc35b7419cc32643143dce6b9ee. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:10:39Z), 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/QZNWY2047359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d111d7eac1d0fb891010f05170d2e786c5b9e7fd503281947f4a9f2d6e8900. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFYX2185067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7430b1bd452b90f7df3cc5185dd3697c669ee68b88dc02a2e656c0e7aa5924f. 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/QZDA42150345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72567e54059bff74e331f443416219f7e6fe2e522cd507a200046553db938ecb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZHN32111765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe8a895a2bdfa7932c379f3b95f6ceb741f37d9ca056b1ab9cc6b37574763af. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMFME2158228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef780f79e59d1297d1cd077fc563f825d3e376fe2dc68804abdcd80c84538eb. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QMDA62180134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2677b448a048fb8ee8447555bb71072c4c94ede52301bea9985596328c9963. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QMDA62180135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970d7abea208909496bee0c4fa0747404f805d6822853308fd7fbab7e6d72aad. 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/QMDA62180148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f091a8579bdf8e4ce14d71872ac03475fec5be4e0cd59e1fd3869182e6480d9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMDA62180149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b33366b651e1492f4734da8a4eedccf98fa7346e17437a08634807f3b9dbab4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM4TW2269139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd9e5020e3225b84acca63e1baf4c98085df047b65a2ae9fe41096d63266712. 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/QM4TW2269236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06312c5079ffc132575ee0b28baae64ff4ac511784054592748b7b0ace97b09e. 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/QM4TX2283388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a0876c9ef291972788ba72ed0c62dd1fc16958fb229b5ab69c3968a5579c56. 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/QM4TX2283391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3931ef63b9d505e519b9893703d5eb06e66f98f5547e9f3ddb06d6dc0ee896c2. 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/QMDA62231126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e42e07827146605f8f1e25d36a6a4b5867616d179afe12375e17cddbc53b0c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TRCDP2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d679c5ac39dd7e306bbb678d5bdf417becbcce5f62946babd782d027227e7ea. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TRCDP2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42404031d6ae85c476804e36a191769b1b8c5611047a3871aa1a9443cfa20e3c. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/TRBZR2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6bec93ccdb08e99ca03eb7dfe52a3730a0a70a07aa40a6f5826a01ee9d30e8. 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/TRBZR2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4353c7a0966d4a53903f9f6d2b6d4ff2a484b0d2ebcd7647b386cf7246199473. 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/TRBZR2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb71341ffaf88ec3c2ecbf41ca0d508716df05533fc4d6ec28b1041a28c2c5c. 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/TRBZR2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe10b7806ab6ebf862e171989e2cc58b9ba3c13bec6b89541a12df95dfad4dbe. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TRBZR2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef07a8072ef4649dd6a580da57dc66a30d26698be61d3b3f824d0586eda25b09. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TRCDP2200055.