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 0xc7f4c2f282cadc963c31c10926174b85054d709c7db6c91f92c3a4ef266c8877. 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/0647bd6c-44bc-4e9b-a1c8-ed0022878b70.json and https://artists.proofprofile.net/proofs/artist/0647bd6c-44bc-4e9b-a1c8-ed0022878b70.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ape Shit (feat. Young Jeezy, Grands of the Congressmen & Prod By Izze the Producer) - Single
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 0x7f8b599322ddf536d5ab511a4415d67b0536cb8105c3d6a6fa618963a32ce790. 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/US38L1202969.
Let’s Get It: Thug Motivation 101 (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b66191f56166ac489b233c11fd7bfee61a8db5aa9fe218ec358544b7174982. 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/USUM70501377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9932036daf31cf8be9dd1196332c0392271bf03eead1ac50eefada9095a575f4. 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/USLD90815713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb17787cb4e5796e55ac3e3c435409cf9be7132561ad15394427994d6873678c. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/USLD90815714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357f7b45a4ff48f3465922c232d941dd1522f136747c5756a9e3ae095ae9d474. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USLD90815715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8557bae0f0ccebe9fb36321ef27f96012e5b8b626ffc26034344efb81b5045d. 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/USLD90815716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d292a840fcfff626edd1de279734b9fae8dcdd371289dc6f42b580e3626773e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USLD90815717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585f09212e03cec09722f9b28fe490bc8b6aece3a31221fae7edd9a8495e37d5. 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/USLD90815718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbeaa1f057a680283ecab921d90c0efc29555906dcacd671ddaa901977103b9. 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/USLD90815719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eaad7181d49f7ecd0c393d087d1ff963ce112d99babf2f9c3ace395c30c5184. 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/USLD90815720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef9287f1b89421ed82d015efd819baf5a63c0f481d790b0d716f326bd31ac98. 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/USLD90815721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb360c6ee5aa6af9458d0339b10a508e1b02b5935b59e453ee7baf49d49567571. 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/USLD90815722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf207d3fec6edf2aa47ccd97b08afe0ba6352155c1018585ed585fa0af441ecfa. 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/USLD90815723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f51f2ced6b437e37bab4fd2e1702538ee423ad0a18ea18a14dbcef94836600. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USLD90815724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0e7c07d3e32184f3f990a008bd19b6a7c04aa1d804a50b6c1e7741825a62ed. 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/USLD90815725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3038718c29046c7f30b1bff1f37661546ecf249271fae631561f1e18a3a330b8. 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/USLD90815726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4f85688a519d1d0a7d3ca8cbb628e07a260ca83a4badd7d28ccddd0bd9d2fc. 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/USLD90815727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c89b7c832d749df1c460b4244c925fb89cb672ddcfe1d4a993a88e9839ec1bc. 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/USLD90815728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8ebb3056f2ce2d1ae60f818441b17c9ce9636fc886971c69d6fb0fa4194e16. 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/USLD90815729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c417eaf8375418f6c3bb65694d37bc5ba635282cc2c6ca68c615195c63a8cf. 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/USLD90815730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e799fac8782abe7ba59140ba561de4f5c76ea0b58213d4f7d45c2b25cc7657. 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/USLD90815731.