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 0xe07ded176ba9a8364b0a84b794fd05d079ac5a728552eedb6caeb941da6f2013. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb34ca18-6c75-4f50-80e7-243e18e5fc79.json and https://artists.proofprofile.net/proofs/artist/eb34ca18-6c75-4f50-80e7-243e18e5fc79.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 0x6ad0c8b02f7ff530752c02d1438cb154f1ee0abe999ce8ee92474eace25f091f. 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/FRUM71902277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e65bed2dc43814171eef56f1a87fcb0477c20ed3a19328eb556e2252dbcb6d. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:01:49Z), 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/FRZ026601170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8d923a702e0b01718bd72cd0ada9d411ff28a5fb15d95359ce20456704b74a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRUM71902286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca2ab86739a1386035909f4b36a6a98174f54d2fe55f2b1029185b06fd3b112. 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/FRUM72000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f69fdd9d66065c071ac135c69f5c504a31db73cdbb443815be2f6d80cb0e878. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:54:40Z), 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/FRUM71902287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6dc8408f937a9546c1dcfa8eab610da4af505cc0205df938decd7d4cb4599c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRUM72000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f07bbfc29edf3dc3b0700498961e5e801dc4262aa54a5542d9b06af0e1060f5. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRUM72000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09376b64cc70e06fffc36dc33d8981ceb58c13a55c2f5096a6582a799f693656. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:49Z), 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/FRUM72000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9184bd6ec1e6e655de4edaea0446104501ad90c2146818431d3e04190577893c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FRUM72000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6b2f173a8e8b2350eabb9b878950dbeec59b9296d477a2bbf6ccd335899318. 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/FRUM72000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5823708ab70a0035a707221a6e72e06822717d9b9b79beb4aa7d1df943b38ee. 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/FRUM72000008.
Age tendre... La tournée des idoles, Vol. 3: La Magie des Années 60-70-80
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d266d64db381b1e1656991379838f3b1e1e4d7214309bf818ab26653ac81175. 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/FR2HT0800080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e1ec74078e428230e86cef8d7854ce1a2229896358e1dc4bc6f172151117bb. 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/FRZ026601150.
Age tendre... La tournée des idoles, Vol. 2: La magie des années 60-70
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe771be8e55f285811770ba7fc5e4ec3ef160e72dd0721f8f67b65d9f2817e524. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/FR2HT0700020.
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
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cd6e11a0289d93f96c757f122cb3a7ebffe067c51f8d4e915b9ef7be4f21ec. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/FR2HT0700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7e39f8db8b3dc079cb655f7ed8a00353e794d5ddf223f2ffe73d50896170fd. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/FR2HT0800090.