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 0xef39c272e7770de4a5d70d6401f09f3ee290ccd7a3dcfae27b62ab005261b041. 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/7ccb1290-9447-4109-8c52-c6fc5610fc92.json and https://artists.proofprofile.net/proofs/artist/7ccb1290-9447-4109-8c52-c6fc5610fc92.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 0x3733ec641004a4b85482c94cc91c08134e7a215a6fde543873e1cae7fe2ddcb5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAFR2160883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbf31abc9d5848f523fdc0faeb399a0d178e0d626743d9bc3d4f7f1ab1cd20c. 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/TCAFR2160888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed0e20111645898c0cb2428b047a9502ba6870654aeb3530b82d15f95dfa00c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:06:06Z), 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/TCAFR2160891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c253dd93469c56a34e3547ab45a27c67713cb66a6cbb6a228b4604a1a6efff1. 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/TCAFR2160893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec677fc942e19b1014ebdd7901ec8caafc920967a043e46cbf26556854fb2c7. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCAFR2160895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543846456c360e88124b919ef8ba6c283b272fa2433507dddef4846ff5ec19c6. 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/TCAFZ2260239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5f9222f1fdee3e1a6aa3e928d08411d52c9f1df95ffc604d59c162f13186ac. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAHI2342971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6534550e369c9055a7d365f8b3647f8ac839f704f8f03ffc5ef41ce717024a0. 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/TCAHI2344717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8add9de351eca105b30b670de7452ceff8d963ed26414ac1d4dde105231832. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAHI2344729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbb12a0992d888e59bb4810eca405bed3363c09d6c328ea12060c2855a4d85a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAHJ2311452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f3e2cc3239ae410360c6e021c270373ae4e87372ebad1a90786481571dd370. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAHM2313396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e78f56bd14525f5a391400c56591fdef49e109e5175caa681d3f7f38c6ede9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTVM2362409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bba27c15be09652abae1afcf1a922f5e7ff6b8820bee3d1ca4302c4033fda13. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ5AB2474920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cd8173c5829842dc2f8e0beff7c5712b7f3081c399eb5d29d5dfd0ed79974d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZW9K2459998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc680bf520ce7814d82349803ccbd06877dc0d21bc047b70be113920407a6ac0f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MXA0X2300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f1a4104a6e58c27d2264cc0d9c7d73788707e64feed7982951184e3d3c2750. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZNJY2431667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d5fc2d98c4da5f8402ef172e7a93d29976a77c22c75125d2d1dc2ace124b4e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJY2431664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698e6a63594d777ad0e5247c1a4f906f57b89efc5aa29c04e5d392287007639f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJY2431661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064eb4b65f2127062ed46f3c5d59191659cbc092c732ff7dd5be6dd0ff43cdb4. 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/QZNJY2431660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd75223eb76186453bcdaec12d9b915807080af426c090f3e23cde1c64bc7ef2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9K2466685.
Las Que Te Escribí y Nunca Te Canté (Unplugged)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540abe98f599d544d568df84cad692c1669d8376e8b9c27debfbfaf06e64ec01. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXA0X2300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28762a925037fcd7a354c35a4d3a45796ff249d219bb783d713b0372fdf93666. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AR5UH2400721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22764f648e3ebfae053b04aded4cdc7d67f55a7d5384d9b755f5621c316c16ac. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLM2535012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064eb4b65f2127062ed46f3c5d59191659cbc092c732ff7dd5be6dd0ff43cdb4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJY2431660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698e6a63594d777ad0e5247c1a4f906f57b89efc5aa29c04e5d392287007639f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJY2431661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6134a5f9c729f6e0f22d141325493f6719ad866da5413076341282e4e61951. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJY2431662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d5fc2d98c4da5f8402ef172e7a93d29976a77c22c75125d2d1dc2ace124b4e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJY2431664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2591d7a97d7be095c05592ed5b983b2c2bec89048bc27ecdd9d97787d5c63dde. 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/QZNJY2431666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f1a4104a6e58c27d2264cc0d9c7d73788707e64feed7982951184e3d3c2750. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJY2431667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2591d7a97d7be095c05592ed5b983b2c2bec89048bc27ecdd9d97787d5c63dde. 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/QZNJY2431666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6134a5f9c729f6e0f22d141325493f6719ad866da5413076341282e4e61951. 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/QZNJY2431662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151ed2aa672d7ec88c8456efbae9b9d9838a23ab9f64c725c7841591ff6615c6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJV2411508.