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 0xe06e68f4f809503411e5f787778301d42d3f21194e3c4cf15350ed207f538667. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e775b86-fb15-44ec-abb0-889c449fc82e.json and https://artists.proofprofile.net/proofs/artist/1e775b86-fb15-44ec-abb0-889c449fc82e.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 0x85f4795f2816def4f249c821b7d20b76d34f7bffec327d7a8e65122424547f64. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/USCGJ1621019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a845a32d32ccb135e2c768d749d39d89fe072a6384b701220efc8bca4a2120. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGJ1621022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457c1f62cbc59475399640fb686e571a97cab7e409bee98716d5c88b1c07ebb3. 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/QZNJV2440329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ab048b051eb9c45428691e173b2da6f82eeec4f99eab68dc410923f92c8956. 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/QZNJV2440332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f57864221cf418a4210ed5abd29aa0dc0b78383d5bd34cdf4bcb2ddfe12152. 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/COGM11614001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bee8509c528460ca2cd53fc4e38ec35eab0d66e6b9f31aafff6cd1c7f44537a. 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/COGM11614002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cc8fcb124e98d7c373374ed6ea2add7e14d995ac8f9c9b60925c9dc8c43ef7. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/COGM11613002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fc2b55cef5cce18a3b97665edcfc4246bc9024d3f4c8a1e4520d5c432018d2. 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/COGM11614003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4668d50f8906e9469c171ebdba726211cb6b202914c39979df3ffdd6796b9ca5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/COGM11614005.
¡Arre, Borriquita! Desde Entonces y por Siempre…
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3a136915849a8f5faa11ca4152f9b4e341571109a24c0c6638878aa5a59dbb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM6N21552426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2dc1980edeff259607faec2a96bf07d5ce1ef4d2c0d04854301bc123a704f2d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM6N21552432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fbc39222d2a0c6c059b76fdd3171af174f725ed057d6e798a16934a92d1472. 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/QM6N21552438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabcc5ccbbf131d625512370f0917006c9831eadcd0b9dc0e21c7b0669572961. 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/QM6N21552444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5c8d51863b15cfa7c6e792ce7ae2e6257a0716822eeeb13011658b81e98b56. 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/QM6N21552446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6264de8dc127edf840dddd8cee231b1022d018c2e5718588f32dbc1e130898. 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/QM6N21552448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de26fbf5b2986aa6c4331d825331edd87ced7009f5764a30a001dec76752faf. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM6N21552452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02e0554a69619fa796e0d41052a76c402273f689eabe33f9b0e9eb1625c3d89. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QM6N21552428.
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 0x1a4a62be55a271f1cca125f86f3b6525ed547eb986593d701d1de653bc1de26b. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QM6N21552430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11689d4045c9cdd30fe52853b75ba30415b2c2d37e7db13e918560d78a4c487. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/QM6N21552442.
Así Me Lo Contaron a Mí y Así Te Lo Canto a Ti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c8b739d3d5b4eaaef255e9aaec34799d4e5afce145e48f99bc5a0b72252ba4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR59R1602093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ab0e28f1a68d6f629a5858d7f50aa1afade8b38b6289bac0257714ee6953f9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR59R1602102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819c2b7a3a13921993ad2b5c0159cf1965b7217db807285109508bfb8618a47d. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FR59R1602096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f00afbbf2d3652bf3db194acfa5a35bff8c93af90465ae98ed059f48b024dac. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZGLS2046595.