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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 0x6d0965f0e6ec22f6b5f6857b3d0c4633d7012f1dd3fc5bc03691dc5038af2acb. 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/d21637a1-e2ec-45ba-8a33-bb2f3f9fdfa2.json and https://artists.proofprofile.net/proofs/artist/d21637a1-e2ec-45ba-8a33-bb2f3f9fdfa2.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 0x56125edccecf147576e46b15668c5e438576ec2245f149584afb6a2440aad03a. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/RUA1D2594182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cdeae02173213efac76303d63c1b21afcd946a5ff887e3cc8581129e67be61. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/FRX281987863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ec7c50556c00b6ee6581011fa91315c013d07115c82344c4fa19f0ecf63ee7. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/ATJ311078802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061542a25ef38422b3c1c0f239b8a861a8c4bec4bc59d8b5bcfbbe044ac44288. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FR6V81287836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e12bac8a43fdf72044ccbce848d882923a162734f767cfec51f623d14e79ad8. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/FR6V81287838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b16ce1b6ef7984dac916bb0019056b8c9f8759020219ae2043052ac6f404c89. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR6V81287845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a57f70fd66656bf3485458cbda7d66e30425bf39e8941ffa868730e0474f5a0. 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/FR6V81287847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2945acf7d60e6b3bb2f80c5ced6c9bad2b01a41c3bca64fe20bd0cd16832e9e. 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/FR6V82099828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a7b2b3283a7694f8405d04bd2161e2f185873e2c0afdf9e70055e003c22257. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FR6V82304431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fd3ffa1fa6e7cd0f911a9fcd2c1bcfc4c7932d8a5f1b2809b08e90f7232f24. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FR6V82304432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aebf478b29b435fe3fdd2f7ca8a27353f946ea205ae3f9e77a73ecc61374fcf. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR6V82304433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a347082349bcd3cf19645111573bb582a414d70896dab0dfc4b881c0225958f. 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/FR6V82304436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd067cc1e3a80660f53a7029bb4540eac43e88230ef6cdecef67e747ff3e96b1. 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/FR6V82304438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf265df4e5adcedcc8e0be401942a25057cdaf0151da71e876c18b0e0ac4b6a. 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/FR6V82304439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba1c532beaff68296619e41aaab2a5c107b8d7568df14d3a84ad2f0ace18dd5. 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/FR6V82304443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739ef2c3ae193ffa3014ffbbd97fd53b6410c2819147958094028ff30dfc4a28. 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/FR6V82304445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5301e04d3ff5a1cab288009f8168186d76b6f15c89140cb41f71305cbf434c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/FR6V82304446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78473f01ad1d4a928f13e6b57e97f6294dbb2b1b0b9f1d8f138b712dfc5d4099. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/FR6V82304451.
PARTY MEGAMIX (Dance Version) (20 Hits Non-Stop)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ab36569daef89c976ca08a1f382549eb33a0081c819b84963135fc8cb86828. 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/FR2X41508194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb237caaaba8207acaea29e27ff9e20a73a77c8ddf56e4696fa316c063add4721. 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/FR2X41508195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80165b2ef7b928b83b1a47261e8e9dd3e944ea37178c67b45b70381d18f2533. 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/FR2X41508198.
The Original Maxi-Singles Collection & B-Sides
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b38143fd09113c9e2a4bf30f76f0ec964a5c63d90040bdba682bd67b28c52b. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/RUA1D2549352.
Gold - The Hit Collection (Special Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b16ce1b6ef7984dac916bb0019056b8c9f8759020219ae2043052ac6f404c89. 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/FR6V81287845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a3f9906e5ca2fd88b017850aaf90c9fa563543e50361be390e37c4021087b0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR96X2152063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fe2ca80e694deb6660d6622959e0ee750f212b35c45942b99de78d6362622f. 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/FR96X2152067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475e5d13078f07829b9195ff3703d1c544c1d5e204bd8f4ff851ba286e6cf274. 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/FR6V82646129.