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 0xcb12f225ceb739f6a71be94a4dc0feaceefcb4a008a9a6398f3d62f312ffd830. 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/4e9d6177-9e51-4012-ab40-8a9ad70f2efd.json and https://artists.proofprofile.net/proofs/artist/4e9d6177-9e51-4012-ab40-8a9ad70f2efd.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 0x249a2703821315d99a021efa426102fdfb2fd2b20d4aacaf726d6853aaa0282d. 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/QZZ662332963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dc4dce740c15ccc5f23c0dbb3140445085cae3cf784a19c3c1dfb68f420b8d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZZ662373291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957fe8e269188e32fb3980d20b2a90b1c51eee6790c2036f13456afae72349a5. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GBLFP2452086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85b20e9dcc8028fdad03f9fbb1b2decc884e07e9cd454c03a6618a6dbe45833. 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/QZYFZ2454244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85b20e9dcc8028fdad03f9fbb1b2decc884e07e9cd454c03a6618a6dbe45833. 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/QZYFZ2454244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe3a17983098daeed87c3eba6b4ec147e43c8a9ebbcc2bc1c89f1cff774c300. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZYFZ2463167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22962f1716c82f38a73eb50e563f415ff26e480224862a5431ab5aad4100bfe3. 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/QZWDW2424369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a5806af247232f7d94ee65e93fe2ad571058fddb80c8390ef735e43bc75d6e. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:08:01Z), 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/QZWDW2436586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9b18bb8b88f3ff66811cedc4c3dab17500dbe407f6bf6efad0e570ae7a642c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZWDW2468890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd7f2145010021efc8cac31e443a65871d480fcc62a4350a3adf5f9ffe3daa3. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZN882430812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baa2729366d7a655fe99554fba321da81f3e86e8378dfec2c455f46beb9fe2a. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZYFZ2500452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7966eeff424e29d457cf4b9d972ed95a8909cff7cbc8d42175faf6cbd95cd2c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZYFZ2500453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216cba552ce8ec42050305e39c6f70462f8a4ba1c4179259c8c27ff6080b9010. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZYFZ2500454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c05c1ec767c49e263a2ec5503abe4ab17f17d02b534326b69b210523a690b70. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZYFZ2500456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e9cc0b47251ce7b26cd94df12e5a1c749031adb1fce7a3a5589d7e9bcd5e9c. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZYFZ2500457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3630c0b0efda57f8bd87b45b89d81cf449a93579a74ed9f0aac6e2bb6cee4769. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZYFZ2500458.
LOS NIKE (with Seikan Anikila, El Chulo) - REMIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748730d89f4b3ff75fc2bcbac0840fe35a77de26515a721a9a41bc859c7cccd7. 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/QZYFZ2479306.