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 0x411b9d32624f48b1e8ec82e9695250daaa2d91b4d6f8f76e0398780d2230fbed. 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/7efcb21b-49d3-4ffe-9289-3405dc93fc6d.json and https://artists.proofprofile.net/proofs/artist/7efcb21b-49d3-4ffe-9289-3405dc93fc6d.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 0x57e2ee6e1cf0bdeafbf4ee61a3734d82366a8f3cbb7ecd3663e4b8e11378c5dd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USDYP0710027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92debccd983b1d25642d28f861791a263ffe6613520c6060fa5c9a07f6583de. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USDYP0710036.
Sideshow (feat. Rob Lo, Y.S. & Hunnet Proof)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bbb2a2724db449adf733564951d3c071dcee1052f5affb17352e19e3e319b5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USUYG1246513.
We The Noya (feat. Bla$ta & Kavipicasso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47380a07abdcc405403d9b7c725304945da0af924d6f90cc5dc8ffaf18a2d668. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNMT2058869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1b548cb23cfaaa2eb727db377f3a989fdc921e3e0fbe8b397dadaa4c1bfae0. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1363504.
Mac Dre: Romp in Peace / Johnny Ca$h: Thizz in Peace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b4347d0b984da1b152e1acd94feee0a3427cea624af49f2e1f3fff5604d9d2. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USDYP1100206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640c72b83756ea1523bd4de4bca3b62c80627fc94ad9bae93e9199ab4cd68512. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/USDYP1100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81568f18991d430f8af61eea32db8f610de208abe977b372d2f07e0bb455f76. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USDYP1100208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5df9cad31681aa590c93185eb3f077a805a9b0cb9e16e9ba28816a38424e6ce. 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/USDYP1100209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1f61a3595bb15422628bac93f0b0d5f060f327771da9f1da0655f5e1f2a6bb. 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/USDYP1100210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4743c2ebccbac509790334b88556ad628be957430c915c19eafb2c38444d57. 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/USDYP1100211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfec3b8e4d1365d1e45157655015950e6e91dc05c82d1a8b468c00e66e5fdd57. 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/USDYP1100212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d86eaa2cffce90ad4cf0e4e8d35b821bdf9a883172524936e58fd32d0b386e. 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/USDYP1100213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd050df3897a1227ea6e149215bf6f80453a9ba7bc78ea1845d26e36fd894d0d4. 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/USDYP1100215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9644ee0525839cdccb84799baad23280e8a188fc926ff3bff2dd25efc8545ab. 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/USDYP1100216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58848c263eb1306334eb23cdbc49acffc22555ee63c654f23b8b9e368346b5de. 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/USDYP1100217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fd3de22d082ea182f43bda40a351e41c642cbb9dc39086eb70a024dba2dbac. 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/USDYP1100218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26db8ed85db0fd0609fa2804fb4f45a6ae0d0b57aa455762685b96f9f8c3f85. 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/USDYP1100219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5e7177bee8d7c433a39c19b1175c9259b8604622f2a692fd9399baf40dcf98. 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/USDYP1100220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb3853f5b9494805e0b72bbf06d91d47eed0c1c975c188ba810a195af0b87ec. 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/USDYP1100221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511865d0ff7a4c39abf1472ce9d3d1a7d192814d5875cfc116d1e5528e2f7172. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USDYP1100222.