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 0xe8ced498f28864d8fab07d58b8676bf6ae937805855c2ee1163f39024977efc2. 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/6582d180-1b28-4e72-b85e-5bac8d9a47bb.json and https://artists.proofprofile.net/proofs/artist/6582d180-1b28-4e72-b85e-5bac8d9a47bb.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 0x09f4d724bff5a750ba4afd30ab9c55360f4df4107236e72f9c7a5ec259227c76. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/GX53U2323253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1009b293bd1627c2a35ff4a111d23386925574ff341d6ff6f7b5e75d1791368a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GX53U2323254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb16571b734cb4a9eef05386088e784b5e93ad39a54c9735b50ae2716f0cd7b8. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:53:54Z), 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/GX53U2470035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a6fbf91848ce353cca84f48f17931fe0d88c0d7cd8ac9503fa36b0a524bb50. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GX53U2470036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d47abf88128284a19d9545669225b81653b4bbcdd1455506f86471f15ae04a. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:59:02Z), 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/GX53U2470037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbd12809d9a93196645727b3dfd280aca03c2c567b8c831f74d14768091bb5b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GX53U2470038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70776083a17619f14d30381ac35ce8f05db242ee225bba1528558225bdd403ab. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GX53U2470039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fe10f92a86a611186f53c18a021c42b38836786b6c47465e21d9b5d686db51. 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/GX53U2470041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02256776e955673254d212e1c535d4bf570dc8ea76730b3c828385448b9f9651. 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/GX53U2470042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22116251a81380144b4cfebd0026e1fd4a19bb3bf266a3a8d814e91495daaa06. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/GX53U2470045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0861c99fd7053cb16c3b19f0d270a45bef37bc26688a342e0c4b2ae5c3729c5. 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/GX53U2471229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304454771fd11c2378fe9571d4815ccf857fcc04ec7cc2258d701bc87fc69188. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:33:28Z), 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/GX53U2471230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fd9b118670b16312afcb82e8d941ae3a741f51e69112ee52991b9f646d7f9f. 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/GX53U2471231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefba255b6825d0052275d2429ab947dbd4aeb3ea7c9bc3c6fff76ff93e212e80. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GX53U2471233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3783b5112562b1d56feea62df63842946e6f9c8e21e47970931c1e00aae83642. 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/GX53U2471235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8aaad755b0ced5edf4dd08b0f56ff450fd279bf9a39f1cde371b6e46b1501b. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX53U2471236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1717e578646429c390b145b3251a2a1843b09f2f8dc68c136670bd8f429686. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX53U2471237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4f3fc883bc0a5ddf5bca179658bac0f37da6bd5ec17f17682424021e2ba7d5. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/GX53U2471238.