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 0xce3ef7c73e5390761c61267d73b60f2eeb6fa3636dd969a87a77759cc063cb74. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73ff8d36-f482-4fa7-baeb-3b7634fc935b.json and https://artists.proofprofile.net/proofs/artist/73ff8d36-f482-4fa7-baeb-3b7634fc935b.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 0x2a7136b843c85d91514563089b541b9744c829d0e73f2f2b54443d636a681700. 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/ITKWG1700197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b382fdebc96d907c87d6f3ff8b96822dcb5fbd4620be6c08fed818cc6bf5e47. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITKWG1700198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa885e54603c5b8621446375c95433a8ff5d87a7d8ae9ff4923c56078a0a10bb. 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/ITKWG1700199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983a6b60765bef1519c25610ae918377b6be701492babc4e45d83222721d6a54. 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/ITKWG1700200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7208487f65b0de1ad24367d2b0a1468db15ee5fd294156fa53c68b759125466e. 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/ITKWG1700201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6183bf03f0d4689569e1565e2f4599704ed2549d5a8cf9aa28c7a3ecdb669ec. 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/ITKWG1700202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b850542be14103b82da67c881f3b369c61bf5e122cf5d612a999dd913370ab. 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/ITKWG1700203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da507b70c82a7ba7140113df32c1635f5f14b3e79078f09428266e3c4e1985f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ITKWG1700204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c64699fb67cf6bb4f1f9d2f1f45f077cd4da295d88ad777795f2df619deec3. 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/ITKWG1700205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ae84e831ad82b0c10a5fdc357820993d18d5db6681dec6ddede14fe53e7f19. 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/ITKWG1700206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde59c84ac771fc2916f984758c791758e5c871de0179208de0beaf1c4c175d5. 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/ITKWG1700207.
Swiss Side Squad (feat. Limon Willis, Funky Nano, VinzUlto, Marteena, Tommy Gun & Tundra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64799b091e1c87450458b3beda00f71e5a63ccb0e4a9b16a047fb7f9b96a5992. 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/ITKWG1700208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058d1eee020dc7fee54ff766f38466c68b800c8ae355508b51f95141582a6230. 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/ITKWG1700209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2eb43a90b13c919b2975f467be2f69f7f6d70e27ae17b899333fa145c9f158. 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/ITKWG1700210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70758ab1278b7bb916fe1fabb641bed30336e741598c5da71c00867f9865e6b0. 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/TCADJ1789721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e7423ffc7d83cb10a531425cb211cd98beb2012b029953b0557497116a4bb4. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCADW1886521.