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 0x2c3ad8753fdb859c40124a7a67f2e906c9b65d0a9021a5fe2ce10afec7810982. 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/d3544883-ecee-46b6-a66c-e5dbf3b66dcc.json and https://artists.proofprofile.net/proofs/artist/d3544883-ecee-46b6-a66c-e5dbf3b66dcc.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 0x97354656719d3ae92446c851d4ece907604579fae03436407757e1f732c6ce4f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UKZGC2200652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8280942513a621dabf5dedf1c737815739053877e3775b6054261c2b8bbcd89. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/UKZGC2401527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300c7a6b3bbf15cdc71eab80d654a60c2cae8969dc024e68f71913a652dafce9. 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/UKZGC2404305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97efcd281eda0b9d1db40c2fe233caaf0a22686b1f72270b9e57cd496373de71. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/UKZGC2406552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76537c56fec7054771feb54b99ab07bf13122d69026f070959b88973c89e213. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/UKZGC2410983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573d02e769adf0fdd2eb6ba13b6120aed535f808c03c12bd435df5a78ea5ce3f. 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/UKZGC2500391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3b91973c58e219dec5d67cecc14cf46dd06dffa194614ee3277b19c999e960. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/UKZGC2500524.
شال الراية (پرچم برداشت عباس، راه افتاده)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc333e3be4f6e998d0e82d7929c2eed00f76f8bfe9866cc1bba17e5c1fbefc7d7. 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/UKZGC2501439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02091771d177b6c8aca74bd2528f3ad3b82d5a3c9360d09a59f11461b96e2ce3. 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/UKZGC2502421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ad890c23b435c31614c6d5abf6b3e002a61717b9ddfde27d3daa81eccf8bc0. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:22:19Z), 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/UKZGC2503368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef06c548cb9f1cb127ae5dcb5d23f3331fca68befeb3f167bff6156617b3fb5d. 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/UKZGC2505092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9232114a020300db8bc36665d4bada4e9331106545e5ecf14ebe60c556ae2a34. 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/UKZGC2505753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19482fb6e7eddc028887972ed9ba9c354fd6a01496585af0407a02241864d46. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:52:35Z), 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/UKZGC2505939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3498770a658d8a66c71b7f1d46bae4525baea263ebc5a345bda9b5241b31fb70. 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/UKZGC2507384.