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 0x9dde420274f2660c393c36898c530a419a14a1d173c1ac22fb325f929638b758. 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/ceab344e-1e8e-4e67-9bca-4a2f8f703f23.json and https://artists.proofprofile.net/proofs/artist/ceab344e-1e8e-4e67-9bca-4a2f8f703f23.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 0x523784718c410630c3cd10bae9db7146352c496b9be204d92040a133ddec2f75. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMDA61336281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8003bb8ee23f6d6fb331c3df9a62ae3cc7fe6e5742b69831bdfcc8c0d9322c3. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:53:30Z), 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/QMDA61336300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f8dddca3e64b45d71030123da7846b07faf02fa378afa74fd098bc5549c052. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMDA61336303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3413133f3b498eb8d4b786376ec60bcab040e53e7b5f91222f98a3507441edc9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QMDA61336304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345f2f3f0e288cae5326e3303a586ee1fe442a08b2e1399d6ef9efeb44a579e4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMDA61336308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93702a811d6d683debb05f956e89717371b5c7703c741c5c75760452db6a7a1e. 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/QMDA61336307.
¡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 0xee1b912b0556d16ece585584de02426f7585980bf1aaec5bee2dd9e62c3fe230. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QM6N21552427.
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 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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233d152a169891bb6c7841e6e7d3d4c107175a175bdcdf80a7e921716659cc61. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QM6N21552429.
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 0x3a4e3fe240edc1899260cb26e455f8ef6e3bdcd35a2e74b11222f954fe739367. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM6N21552431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1b46b69cdfab7f1a3fffacd12718ef3dfc7a78b3f2f7caf75819edcf643e31. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QM6N21552433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf762aa834cba679062a3209c0b08a5e2c9368962d5b4d783105e7bb4e9029c7. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QM6N21552436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdc9ac9534ae2914a6aa976a9e160d55f023efc0f461180f29812b995922d8a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM6N21552440.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866c5cfe48c83f008c9a3b62f163088dcd042a4f675c8f5065cefcef07b8cd62. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/QM6N21552450.
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 0xf4b7eb25e3976cd1495f9d8a4679cf21b08b974c10e157e256930a3035cd4c9e. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QMDA72134652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf03fa61946d18d5cfcb6b4ed0352c9e2b8d9530a8fab1d260c92d33d3c440a1. 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/QM54E1500051.