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 0xc010ddcf59c393d639dc7673de43d2ed9fcc71b462610225437f42fab304b6e8. 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/2a76f45a-aa38-4f41-83cc-264a62ba10af.json and https://artists.proofprofile.net/proofs/artist/2a76f45a-aa38-4f41-83cc-264a62ba10af.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 0x1148c25397a6624e0278128010cf25b3e7d675df64d1c279bd7040e0cd2d96cb. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USHM81723271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63559b6ec50993c9c3124bf52bafb337424cf2302f5b59e4c448a99e2f764a9f. 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/USHM81723272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbc74fa2e6abc799fef42c4a1e47e96731c75591c67b6c17a921fcef93d3c91. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/USHM81723273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65ceff318dba0f22d6296fd57e9be8f6ac059d9883d1452bf43d2e898758cb9. 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/USHM81723274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ceed8414b2bff948667e8cdaef42c428b4cdd0ce0d0c3b38f3eafcd8feb080. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:01:03Z), 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/USHM81723275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb788f3fa8c6382a31f6bd08f960eaf7b947f0239ce389c7d37a49c92dbbfba53. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USHM81723277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10f24d388f82cd2992397c15c45ad1f5b7200424234f1e4499cf994cc4a64bc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USHM81723278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88aaa67f6965adcd797f14cafaa7bfa9b4f2f0a064ece8d4876498b3e1f03b3c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:37:00Z), 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/USHM81887499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf8b108b9deb49adf28ce75c8f4edadac32038cf206450289639e16b45e8c77. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFZ32261572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ed3b2a2a8f40471dd39de6938c00568e2bd0e168d73e7d72053829f5fc9232. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USUYG1522288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482f3b1d7fe3082fea404048d5078c262a3cd0639206569b0b117f4fd7605534. 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/USUG12004125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f528f9ec473ab6137afd0cc6eb0b61484597c35583aed8c53cdc64a529aad2d. 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/USUG12308785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b230ac7118f2ad1f83f45ce89ec3f3508dbb7f857490d64e4b2c3549e57064. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZ9Y21721609.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Havin Things (feat. Treety & Kenneth Brother)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026c52cda734aa6187b246f374d6714b5c6183c6c2e3442104553a5d134efe10. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USUYG1376239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3706ae138d98b5c6075eaef34e727120d5150b737ce52292ebea4467cbf4304d. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USUYG1376244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa106648f20e90732807d1d465f2112da8387a5c2dac22f118e1087ca5e68ea61. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QMPKX1874577.