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 0xe786440240d524382d077cfbe7327dff8370e80117f9cc928f4504552054d9f1. 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/3cc1c1ee-d9d0-4b05-9087-794a1c2271b0.json and https://artists.proofprofile.net/proofs/artist/3cc1c1ee-d9d0-4b05-9087-794a1c2271b0.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 0x9138930a7d434c57b1647c40323a00be1bbeb218434347b19beae0eac82e2bbd. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:00:01Z), 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/QZNJY2399012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a823cd95cebcc5e12c7c8f8a2fd6d31ea9f6744009e70253c0089d23c2a225. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZNJY2399013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068d8eecf4a7e7c8afe9e443745c975d78e381c67f124ff8a59036289415bb57. 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/QZNJX2488060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbb207b2ac7ca28496044cbd140711c3150da88469e43c50f768b085986f236. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:59:46Z), 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/QZNJX2488062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd507a3d2614851d9e49a8e93e5d6798121c9d56e5c45c7cdd93240975f8cfb7. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZNJX2488063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1974ca4e3ec1cebd3b834d8c38e5cea72940e314835283c0b6a5f2c768bc9a1d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNJX2488064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5626c92a858df449da78c67d760ef6f0e1973ae2d6015a7422a79a1636a7df. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNJX2488065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994a96eabaa06080a0d1fc0bb40c63212a416e347d99b2ec4da8d1b6effac21a. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZNJX2488067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b3054ed02265c56e0698dc9df87ccd71dda3e5568e3d78a30911abc483fbbd. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:35:09Z), 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/QZNJX2488068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b92799e1ca5bd952ffe196e02314b98c67f1b3d2654d8e24a62a36a35094003. 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/QZNJX2488070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286a7016baf83533a4ad02bf45df13a163c667911c1b067456bae522d01df01f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZNJX2488072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf679d5a888f8d3909e6190dfc64863f227cca4cac3f775d205a91e73af6ebe39. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:34:15Z), 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/QZNJX2488073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a768a566161d18f59686f77dbe814c569e73c2496504fb0506cb423b440827. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZW9L2447725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515b2e44d7a6d2046fab88facb45603c0903339a88d794464ba1c89e320d39e4. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZW9L2447726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a81817709881959d74419e74666709a38cebdba8edfd842bbc0a8835ee10bd. 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/QZW9L2447727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8859c4de4c3e20464920c0c39de9b8a28a0a16bb9022a1554194990eca29b20. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZW9L2447728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745fd40a55c65fc6cf22dcbcb985f1b300b0e43bd6000ba1145a2b70d8994460. 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/QZW9L2447730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ec9abf7e619bed57878715ff9aa3f10d86d19344b676f19ab975415c1fb2e5. 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/QZW9L2447731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd8838f96feaf4080500e51be866ef553083a45ab33a40b6acd6978579635e9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNJW2543976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c80319320391ce3d78abed4448451e15fd5f8cf6ad049202cc0a1c52c09b18. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZNJW2543977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17e6f582c935a04bef3c8d6aa55636e48e711c849ff1105cf579ee708593865. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:53:09Z), 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/QZNJW2543978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5a32051183fa4270bb8b73fc685e0abcce005ddcfa4e501bc38e9124d2db1e. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:04:58Z), 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/QZNJW2543979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5600ba67cad895467dc23641385f525eb199d52cbbb29acb99ee222b83849d1e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNJW2543980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc778c0eef67d055df47251727dedecbf4744224a69caf250a3b31c6478c8cb3. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:23:06Z), 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/QZNJW2543981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd0fcb46852711de97f2f566b7420b2132c89e1e3ac8d65295d15588062c37d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:35:04Z), 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/QZNJW2543982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca811c7f88d3eee7d4de7f0150af48a2500a2191b4ff0461d4be74a7173e57c6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNJW2543983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6c04db510a4eeb6664765bb49a531d82356273bb02b976b672bf3e1fb17b1f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:39:28Z), 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/QZNJW2543984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8758fbe2da6455d632efa70eb78aa6b34ec33f4e78651aea956747e0fb5439ec. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZNJW2543986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e950a2aab11625db71241f58189fd80e736794e60fe93160b046bb15a9635b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNJW2543988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988d12ecf43e856c93b91f59d6647120b0f02dac5efff457d6173e8a9c8372a4. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:48:37Z), 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/QZNJZ2583776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bad0cb369c8cd36a43f05ad8895c6e21831d362e0bea076bd078ffd240c2ab. 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/QZNJZ2583777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbc32122992ed739281ded9532f01cf5d52afe2a602bc6843ac87d49d780f97. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNJZ2583778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42b5662dcbb8d10a38df8aae1f1a65644cc2d1f41b2b0122e4074f1f492d0b7. 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/QZZ792582606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f039786b1c0bccf1cedcc44b27aa0d4a343d00fc6e679d48729c02b34b302d. 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/ELT201214213.