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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6878304337e9bab7e9881029ed4781374d7e116bca2197884e05c11ea0b21e3f. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/decd68e5-8fe4-45fd-a1ce-e9e957e68c9f.json and https://artists.proofprofile.net/proofs/artist/decd68e5-8fe4-45fd-a1ce-e9e957e68c9f.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad39adfa6e02af66661fe77ea544e480be904c150d59349eb91167e5ec4b775f. 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/USUYG1052302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7b7df4e3a84b93e4cd961b4df6924990a974e3b4308755c4db709746f9e6ae. 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/USCGJ1723235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bb10a95c15ceccb9fca1180b3a6ab3db1d56707be1b75ede9442843cdd3542. 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/USDY41705291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e98a897103c35790870c871675f0c68b11af6a2de959a00b8f6c475ee6b16e. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USHM81567014.
Never Goin' Bacc (feat. K-Loc & Big Dough)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4651992041049c0806ebd86ccc185a405180c000c547088832f5549670f94ed. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USHM81567020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582f423f4f6beb24e804e00db326295c7c51607db9b9a881fb8188c1177bea17. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USHM81567021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea446aabab4dc4d0c76976a2e3f3a0fc3e673e0c43ef5b979369868c3633ec26. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGH1260458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e07c279ab62d963a9fa0a9723c7938033ccec5cc0747e14a971916a21a295a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USCGH1260472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c63c4406db105922f3434a62f76707a8ef671a7f73746de0235b9822bf5be2a. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/USCGH2498313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480067f9bcb2635cc386dfa9254c7602af3da6248d18f1bc48798044681310c3. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USHM91467104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291a36a109a673d074e9f0003dd905dafb19a67c7fb8b869253a135318cb101d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QMDA62319241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec9d344fcae5d59656691a4966e41199d25126bae38aed23e8131de88d3c3c4. 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/QMDA62319244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2c4bb131cba880c1ac8d358928e092175675ffac610213012e3c3b72783922. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/QMDA62319248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665f40d260038303f3a39599051a812fc4c53754b5b9cf9a28feba62e71db330. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QMFMG1529468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224892c9841986e8fd97b1e2279c4f309b200d6ead08a415aafb22353f9e7bc6. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QMFMG1529469.
If U Ain't Seen a Brick This Ain't Yo Type of Muzik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6045f7ec24f01e55b7b0171a5d0403d97ab231752aa8aa113f1a7b0c34ed7866. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USBAE3360336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d753ee4c56543f2bd8c992f629407e32b7d899468a20dea134b1a50e1a555a5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMFME2091343.