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 0x931b51eafa9aabe6b73f40d850f9d3618640790f4011190fbab8b1e9940e52fd. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/761dba7a-408d-4fbc-ba42-b5be7bb00198.json and https://artists.proofprofile.net/proofs/artist/761dba7a-408d-4fbc-ba42-b5be7bb00198.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 0xea73422b2ff81a691456a67040ecec0785073913b000a8cdc0f2ad499aa9f0a8. 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/QZTAS2491089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798cd28960b2b2c69294bca7ae552634505184fabce19f2f57801429a03d6e5c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTBB2366058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47da097a6985bb708ddf48c0017c37af6285ae8b57c84ad206f266bd52cd3300. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZWFJ2318537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb39c64d49a47217d2bec2ed573d1ba55c4c6add08b3b71f1bedc1085e1bb72b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFZ42412160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47da097a6985bb708ddf48c0017c37af6285ae8b57c84ad206f266bd52cd3300. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWFJ2318537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42d1bb504c2a7a5661239149d9da5ac9921d6047879ed78c5bc198241279a47. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZTBE2309570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798cd28960b2b2c69294bca7ae552634505184fabce19f2f57801429a03d6e5c. 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/QZTBB2366058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea763deb9ccfeab9749142c69c69e8383e3d939523cc1ec8a3984efde143f3e6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA82125769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d46f5327322d22f2e4a8737cc2e045705c85b4944d14bcf3abd887d4f334340. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWT2236772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990b1c17b5323281cda86083fb37f9fad253521f44d8fd9f7f793987194193fe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTAS2201374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de22126772c185137cc685657d40e7d458f982237415073bb021cf80e10f3ef. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6J2370723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf1306ed28b300aadc36f4c94a563f1412a8c6a47507cafdcec1e0485717850. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZK6M2374079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44aee921600b3f0b27d15cfce2b34e082cb0772ffca0684db89d5d1c034f54ef. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWR2158473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b558316ae50d579a4b183a771d8a3f850da47b4ca8b2009360258adf58c806. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA52260990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef90db785986f3d233398804e794abee62005578066405fad5c8038da3d8183e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZRP42103744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990b1c17b5323281cda86083fb37f9fad253521f44d8fd9f7f793987194193fe. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTAS2201374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d46f5327322d22f2e4a8737cc2e045705c85b4944d14bcf3abd887d4f334340. 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/QZNWT2236772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e7fb3d8f9afd61ac7b6dadfdb41198b744e8e48aaae79bf36d4a7c69e98072. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMEM2289351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b558316ae50d579a4b183a771d8a3f850da47b4ca8b2009360258adf58c806. 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/QZDA52260990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef90db785986f3d233398804e794abee62005578066405fad5c8038da3d8183e. 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/QZRP42103744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44aee921600b3f0b27d15cfce2b34e082cb0772ffca0684db89d5d1c034f54ef. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNWR2158473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1eabd7ec64fe8897e42d98a50dfab19ff0a8bf6d82c7ec4c3de46d96c6eaf38. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEM2117116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b438cc9b3ab7577d9121fd9d0e1bf2edc2ddd8dea32323b90002587112a9fa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHN92166136.