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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ae9c1a02efd23be14319eb640bef3055e30dd622c8f85b1686d812a15fa76e. 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/ff3e1d28-ec28-4077-80a1-b567a3a1f734.json and https://artists.proofprofile.net/proofs/artist/ff3e1d28-ec28-4077-80a1-b567a3a1f734.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57abe473a8cabaf51a185cb5027525a110eae1aae468b9d48c150696e0dd1401. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QMBZ92004607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7731acbfa562367b1c6158ca88d36793179d5367926d793ffb6a9f26c4f072b7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM4TW2041883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4094fb307e9cf5487ddfd73f84ea893d6221b70f4c398534f0803adfd0ebf212. 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/QM4TW2041881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e31ca5dbeb2794cedbbb38040b073ac7ba8517a3a6ab30581b33844786238c4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QM4TX2181137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc64817c7cae0b69e6160ab3234f2688dc24de43c9aca65278bbfc0226dd6a45. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QM4TX2181139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf861c57d4e90ec71cad902d5b41eb062db478c6314be2054128c9f05bc596116. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QMDA72135823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680b70e67632b4be19f7e73c14d0f6d8a4b6c429f5bee574a0cdc6a1b6432e3f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QMDA72135826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf861c57d4e90ec71cad902d5b41eb062db478c6314be2054128c9f05bc596116. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QMDA72135823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa67a85944066f96fe47ba7cf72bb8472d2857d435be5b3601e16ffc4110576. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QMDA72135824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680b70e67632b4be19f7e73c14d0f6d8a4b6c429f5bee574a0cdc6a1b6432e3f. 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/QMDA72135826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e700d011a15faef93263189a0b0d36b1c6f93d63286d21551c80f3812c7242. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QMDA72135830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2eb3c111f7af45351108c52305039ede50c1888af8d854f6305607dae8f08b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/RUA1D2295750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2eb3c111f7af45351108c52305039ede50c1888af8d854f6305607dae8f08b. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/RUA1D2295750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4129a09cd3e6f84e212bf0cb365ae98424d3a3372cfc47e88d81e650c04efd4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DGA0L2390730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf431278b93cceb3cd1fcc1ec62497c50ce44f775e1ae7e0d15ea6130a15ee2fc. 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/QZL5N2441114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f5005967a30f771fd1752662271b2da4161bc0a05c6c6d47448d2c39bca9ec. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/QZL5N2441110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5306b2723b2aca1de8ffc6fbf524dc2b6d370ec38920397053d672b8eaaa3092. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZL5N2441111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b18569f936c6549ca1f36120d4720ff2e989a81eb57d7c9368301097db49dc. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/QZL5N2441112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1442fa47d344e9b8756ef76673b7779cbba365ef2e80c99ff7a8570c2c9df9c0. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/QZL5N2441113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c3ea6f0425df838923ea796805405f2d77ee0b5db4f77d2e7419b003ad111a. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/QZL5N2439905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf431278b93cceb3cd1fcc1ec62497c50ce44f775e1ae7e0d15ea6130a15ee2fc. 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/QZL5N2441114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3338846e21065de972f40217279006b989224147eae495a378632bee4a30de. 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/QZL5N2441115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54a4de29da5d6cd2a87b95ee8bb06b0c5d5fd434a817e33e104ccfb257e0d5b. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZL5N2441116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9663fa3283a77bf55727b5581f3e48c20d303146c29fe98264ef27b6496d5c6. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZL5N2441117.
Глаза. Рты. И что-то человеческое (часть 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f72113d2f2d78d3ed5f8207b13ef7ebd3c5f9ecf392d2c4e4a2d1f9f5345d3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJX2148726.