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 0x67c3a3ae13004e8d5590fbf945d151dddad2a94ae66fe62c235ce19865c54edb. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/295f4007-b851-45a9-85f9-c610d1290aed.json and https://artists.proofprofile.net/proofs/artist/295f4007-b851-45a9-85f9-c610d1290aed.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 0x391e58ea8922970167ed0c20fc57e470993d2010d5f95372fc42dbf7b2c31a42. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/SEYOK1730338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4870ea77f8101d7c157b390b44c70a5d3b69b74d795d3825a8e29fa5a66c66. 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/SEYOK1730339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d922cbbc759e70295ae1c14ee67d38793b5c283fdfc1d4a138a458e6a6f310. 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/SEYOK1730340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2199aa57313dcb3d679ee520e22377b1e93f27c289a1722e5e8165e35237f74. 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/SEYOK1730341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34491d507df3ce14e503ac026fddd1dc5c74a94dbcbf004ab703fa2c64752163. 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/SEYOK1730342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d448b22c4b44521064b0b544a1b8afab471cbbd5be275189c1aa59be7b2561. 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/SEYOK1730343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c973bf4e4e18462e7567d2f1d38bf70038a4ab51ae9b00f6656be4dda909712. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/SEYOK1730344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf33aadc2933218cef3cf38c5722763ba39300d5a1b75765d07c01e468a20ba. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/SEYOK1730345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc15fad27d916a14bc543c547482059add380d36b51c893208df55f68f58551c. 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/SEYOK1730346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afa88ad5583e611849cccb10c4eccbd56c9ea46cb69d8c873e7ef1081f756d9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEYOK1730347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9a445fab8de1da676f75d39296628f7c3d534adcb5f58224206f7aba2e1bed. 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/SEYOK1730348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf4baa6e32c8bf2a5d0cc00d815f2de5ae4c6b4f00321bc358ec42bdd99db85. 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/SEYOK1730349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810edd078e84b7b9be615387f4f71679a0fd115e9683a403788e1853aaa77a4a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEYOK1730350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a64865b9a1c0f50ed419573865e08211baa0ce002cc8ec7bd4edafcdefb832. 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/SEYOK1730351.
Son inmigrantes (En Vivo en Rapamekewe 2020)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb714308dd86a8a478bc4f051073321d573a66c21e42d66ae9527718b6caee4. 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/SEYOK1858719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b279939bef2acf46a1df50660dbc7d5645f38bb9e2d563653ca80a88a5e710. 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/SEYOK1858720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a5ee682c83f7bcb740013fd21d26ef9b15fb1572a14e6290ad59a7c0918c84. 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/SEYOK1858721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af61e35c3e72e3fadb3759a3f53c9cd8752af67049b6cdae82c2df6302b1be6. 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/SEYOK1858723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b08a5b8dfe16950be809beca8869db43d7df6c47e1f38c6df3f93250372f0e. 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/SEYOK2506044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c72747abc05f0712f70afb44f7495529f7281197d9bcfeee99757f0e82a56c. 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/SEYOK2506042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643a0c1645dba4ec594e490e708fc79ebce362ccdc9752c8165846c221ff8978. 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/SEYOK2506043.