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 0x2d3842ffe85e61da0531cf6ec61cbf0d23e617fdc5659cd67de1776179581ff4. 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/482e3918-8662-4ff5-8f1f-45098ceed2db.json and https://artists.proofprofile.net/proofs/artist/482e3918-8662-4ff5-8f1f-45098ceed2db.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 0x2a7ed72e98ccb8e3bf203fe74c66c257aaa022494f04f706b9b5f33f9e886acb. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:04:24Z), 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/USYBL1500681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26ed677fbb5023b56d167e575b449cb82d7d1839d6f6f37ff6a71265fa8f57a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USYBL1500683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98fed1e2b5b9b0aa1ba28178eeb8048f1f8b4f994fc56e4a26f35c2e9a738d3. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/USYBL1500687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54eb2bb5176d22b30060f5a81ea48da431a8d5dd908821d972cb72647a14b8fb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:53:46Z), 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/DEY471615844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb21e8aec6d7c82ade08c08f2aae11fd3afea526ec2af117a0b373737a0a487b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2B1801890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a146d64772c18db2e90256d04ef603e9fb8fcc609c8d200cdea9e3d62219dd. 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/USA2B1801891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94efbe8432318c68e5618a71dfaaec72f10b0cff01fe79bb8d34b39312f4765b. 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/USA2B1801898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a2128d021a74afbd35f58fa65d9cfb1e9be13a6508b50a685e8278285bec3b. Chain 2 (Bitcoin): anchored in block 957842 (2026-07-13T10:08:30Z), 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/QZFZ42490893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eead8f74fffb38854d3dc39cc8f27ecaf83499a82af02983c59a8539a40373b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNWX2596050.
Il Loosies: B-Sides, Remixes & Other Rarities
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d07a329b9c97617719cfb5b4c738b70def577b4b55dfa5ece7e678e83df9a2a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USD8D0901021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49c402d33ed8ae282e1b641868ce6065137b0a6133b81a1b261efa7359aaa92. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMJYS1800498.
Con El Cielo En Tus Ojos - Daniel T. Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf811b727da8c025f0070973ff07eeca3f96220c87830300425b7c9bdef901734. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEP961500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2114e21ab260bc746aab1e9c4bac8df95cf6fbb10151e92f830690d651f5735c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCGJ1701552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b31416aafcbcdb6cd6fa3265f70ff9f38d3b9d6fb634ba780f9621c33828e0. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/AUUM71501807.
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