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 0x2d54b42cc268e459758a6198bf7cce33b1cc2bb196839f495ce989be540a291b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3e0a023-289d-442a-a7a8-3d881e775964.json and https://artists.proofprofile.net/proofs/artist/c3e0a023-289d-442a-a7a8-3d881e775964.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 0xe64545aa3c67d80f9a3723e9a33e21e5526017d4df783d7d06f533e18dd50aea. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:43:33Z), 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/QZNJY2305461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92da82e44152f96142890d3274b0283c5f0fdb17b5901287bb2ed0694109f98a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNJZ2326862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe58f6e820bdee9690b7d5bca17842c04466526621b9a3c63bb11692f6932c6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:26:17Z), 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/QZW9L2357114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54aac3493319af89391ea3ee8e763a807963ccc74a0f74695be280a79df41be6. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:23:47Z), 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/QZNJV2434561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8a2efe0e23674da7ed0ed229b7cc0cb79595bc2aa198c714e543b5a3a4322a. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZNJV2434562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51790d0c96d744edbeaaad7431d368dae7ae9fa9881af4c1b9395fa5ed8c9d3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZNJV2434564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3106d5dd8debade58cc9e5150407d16cab86c0d9d23f883eb4a369c51aff4d1. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZNJV2434565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8ad0772d3092e39b08515f3a33d7cfadd0345bfc0b8de84bbc17e7cbced436. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNJV2434566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510c8a5f9534d9ecefa30097f8a5df3477935c0794a989de19ea4a3539b5bf1b. 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/QZNJV2434567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6012aaee6ed2213b32acada3a78df3d70890cd839de37514cb61775577f731f5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZNJV2434568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12911143d8f849658ce86cbeec330b3301c430a357875937bbcf2a436d24f7f2. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:22:45Z), 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/QZNJV2434569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92efde686c354949ffc083f5fa5a440b82d57e96d577dd450088d9b9329dd7e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZNJV2434570.
Entre Lo Consciente e Inconsciente de Mi Rap
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c5fa1517085e2db8d5620187fdee139bfb19d8fff267735071855de77903aa. 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/QZNJY2410830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea58aac53bde83abd8eb4f0122a155daf269129391ed33b846f5ed88f71d0a1. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZNJY2410831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aafda6ad9bf4c0e4add96a86933ebd082568e75d0c799914a3bc45ed6956c10. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:23:53Z), 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/QZNJY2410833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b18bce5938741a1fa7efc9331e3d1db4a338187d746abe5c3f1379ffe36dbc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNJY2410834.