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 0xcbaec1cad6cb983beb7caac30d0ad626be7dece0a6aa0b6ba379c73c6060224d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9012c71-6c26-449e-9f72-40607e600c5e.json and https://artists.proofprofile.net/proofs/artist/b9012c71-6c26-449e-9f72-40607e600c5e.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 0x42a8325ac2fafbe83d56f1d0c58622cbcf9a141cdbaa5357101a0fa5107d18b7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM4TW2068510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4342e1e6210a30bceb9c951f311db6eecf92b87cd7bbd48b41ad5617e15099ff. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM4TW2068512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a06e9abe311a2fbc6a6ccfb4d24724c3e47e53d8ccf9aef1d4e2bd885af652f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:56:22Z), 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/QM4TW2068515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73d79dc15fcde2672ee748cc0bd9c91182596bc92076d133d21d822697c4caf. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QM4TW2068518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0350f57e2ca04eda48936080402263c63fd55cad5996e6078f74d9b3aa24dbbd. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:31:13Z), 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/QM4TW2068523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430ba8892eaacdb5501ebcb6d9c69a5c3ba4780d42c8d1b9e78e2c301f2ad6b2. 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/QM4TW2068524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aad91c449f15b34ee9203523b801008b848b0aa4cac1f302326ca8800a658f1. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:03:40Z), 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/QM4TW2068527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbc6153ef7c6ba7217e7076b32486d6776790c3e9b361117ea0b2be72b0874a. 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/QM7282046029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848aa1b53349dac8452fe833a554d7799bbeb17c9f4fa8cac582cd4d4ca28a7e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM7282085381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9a415fbcf2dba163c0cbd2ffc963e08c7441595036e285b4181f5c83a9c60d. 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/QM7282085382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9958050d208b608b5b316fa86d475599a80e6a8a9652cbf2e63c3b4fa765ff0. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T22:55:38Z), 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/QMFME2162263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8541093e7f6faf7d5c975b53f9de833c7c02f3668e0cd19f2343c59e7e792c10. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:57Z), 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/QMFME2162267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537149f51bb1ef7ee455b8d492481537f50d6e1736d9e99a3baf4c94eec3149f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMFME2162269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5978781594b72c6d039722c4ce5eb1778bdd718eb86fb3de29be9b7faffbd05c. 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/QMFME2162271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f5a6b97b8c55ec85d1d224fbc76dfc2ee0c676f342b2742664062896010a88. 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/QMDA72177824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260933cc021465923b84e49480a21080c25a70c9c04454030be1233dc12dfcaf. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:46:30Z), 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/QMFMF2130707.
Mix Cumbias Del Recuerdo En Vivo (En vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaccd7407b522cc1e4ce05e907fcda67bd9860e8a30655f4b66f42a4a766ee59. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWQ2563797.