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 0xcb03b14f26a133679c5a5ca1b85cea0c22ae979ebfd2b3223c6afd025e28c472. 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/a89289f0-9bdb-480d-8898-b7acc514cbb6.json and https://artists.proofprofile.net/proofs/artist/a89289f0-9bdb-480d-8898-b7acc514cbb6.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 0x5c0936c7a6cdbd1c509b787d090cc75bab174452cfc659f8936d21d47e7e20dd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEYA11900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0936c7a6cdbd1c509b787d090cc75bab174452cfc659f8936d21d47e7e20dd. 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/DEYA11900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1d3485067795ba487ed2c029f6ebf48c745ce16ed6812aff09a431d77e4d58. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEYA12000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae86169972b9fa5a0f9adfb8dc0c153b445d5b4a8df3f404f7cd7f36019d5474. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEYA12000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98bc521d0969e20676449482dae0627aba2d76515784390d7906375afb33623. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYA11900044.
Skifahren (feat. Bausa & Joshi Mizu) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8e9444f3b915edef2b4de57c5c05053daf66569013b0b68eb6e870b0bf6dcc. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/DEYA12200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4100cc7848eed61f23fe48a4393d470ce28264baad21d8ce8fc0a58c1b9b6f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEYA12200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55261902bd58a1984e96af6dc8249ab7c19b39ba53953a510c49d3be4183f1ad. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/DEYA12200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0098f6fd14785475761da11232e68a0aae3c519dbbd642f157853d383eef79. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/DEYA12200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1aa3184783846d0082a6dde25b97c8f46d60509e3b88b8c79c1dfe7cc5449f4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYA12300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671270c83a1d11b0e4ccc33f3251a27ee6a28f50ae039ccdd9b18379ea609f40. 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/DEYA12500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa46c483875164d35563518996c92eee64738c5f016262c3c0b2922327bcc2e. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/DEYA12500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea05c3297c9a793bc90b132c8bb9af8662e80adf587eb435565995962ad27c9d. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/DEYA12500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4daa3ade2d6f3ded93f0f2fc8d79d8bf0f84b4bcb6b6f6786e7faa53a43a7abf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEYA12200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d03981857e8eb2368c8e96980298b3f1c1e6f01dedae758ee820408a00fce3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYA12200003.