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 0xd4e644d51c8eb5bfeab99f721586fc859259d6bdc06dda421ce9bddbd7cb466a. 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/d188a552-69a6-4828-b375-c5dfdc247c41.json and https://artists.proofprofile.net/proofs/artist/d188a552-69a6-4828-b375-c5dfdc247c41.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 0x6de4a673014f41107bd33ec220aa36318a2ac846848ca6910088d3fb87c25599. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USCGH1886833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b8f1af2c9c206e014203d70a064db20c937fc76633911a2494063ffd01249a. 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/USHM81818501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa044fa6e49d86ee225ad15001ad4958ca64e11c6a5465374e9c8b8893fefb240. 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/QMF922050086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066dc5808f2b44f01cd2751ca8b41dfd2ab98f04c87d347a93d0de684a0760fc. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QMF922050276.
Every Step of the Way (Kings84 Retro Remix)
Every Step of the Way - Kings84 Retro Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066dc5808f2b44f01cd2751ca8b41dfd2ab98f04c87d347a93d0de684a0760fc. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QMF922050276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4c0d5374aa8fa0ac15134410cd096a5e66c0d3719ea5175712056d54d9edca. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QMF922050133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b17d72394d3631d2e264e91b4c4c9cb982ebb1f858400604023e867c758f00. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:59:45Z), 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/TCAFR2181682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8fd059f4a1eb5cbea2bfd171d7f8d933a23fbc4ce566043ff03bf0c4e30bb6. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:54:36Z), 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/TCAFR2184894.
Angels We Have Heard on High (We Won't Be Silent)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cb1e296a5da7533b792250d3a93d8e4f5c43d917013ac090e768deabed5761. 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/TCAFS2159030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c20b9778653edca87cfb5f96936135c39edcea07d80aa3c25cc9489c6a2945. 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/QZUYH2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c4dc5af9754389e6403027ae83aace4aae25d2b27ff83997f540e52af99589. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZUYH2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f08b62e3167adcb646d854038f2bebac4b0c0cd6d3f36d4c5f1e2c5a5df1af. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZUYH2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64aca7be780444591d8eefbdc1bed923ef4d082fd3de7c776211d8e44313ea45. 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/QZUYH2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0a12d4aad44c0ca7609847506e612214a12c16b80d65c5a6e5d3bc74a2c200. 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/QZUYH2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f44f0d1e114f12cdac66a54269cdce3a4808a2831167ebf05f4b235fbc024b. 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/USUYG1257897.