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 0xc47c30dcd45c7f7ee14a3ad9f405d7e8b80b36c9c97737c35d9b7220b80d6b75. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d8110c11-460c-4cd3-b068-4123728f777d.json and https://artists.proofprofile.net/proofs/artist/d8110c11-460c-4cd3-b068-4123728f777d.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 0xc0b995a0aade13543144250856842fb9f6e7daa8d051dba01789fe3811784226. 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/PLC062221642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c90bf921e47bad08f4676bef6b4608e3b597b7c3698b47d5f8b25ea745b78c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/PLC062375421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810961b1a67ef9112c6160a60c03eab381addcd5d2687ee478378304d87c47cc. 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/PLB382300274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca82c31e8fb9aac53a9bca44d020442ff2ad0158a76b9cb9741291589f5346b9. 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/PLC062228915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c4902c6336d606f1309f49933deef51845f8f38b616b58e287ce8ea31f5c77. 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/PLC062373930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099e5ef31b410bd4c42780b2d9fbd7b3e621f645daf7470adf15fd10c88a91c5. 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/PLC062244929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7fa0de2fd5ece074e8d8d57ab903d8b6800b4ad09ac11f25c85016ce378441. 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/PL2DY2200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b641166bde9f37517591533137b0388a7251b1824046dc66f85d8d592d3c88. 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/PLUM72100636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abd7374f52301bb482af884704aec58f0505c576e3d12216cd0e9ad3aa204fe. 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/PLC062115375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061b6dace87a2ea350502548cb163414678290616f7a970bc1e1653904a34712. 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/PLC062120624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810961b1a67ef9112c6160a60c03eab381addcd5d2687ee478378304d87c47cc. 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/PLB382300274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77acad11cb040594d52571c3a187dca2a6c6c6ea145a4b6d6c517628d73022e4. 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/PLB382300324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a379089975dc52fb0c8c000550304de08334360d6328dcf800de19b1a1f8167. 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/PLB382300490.
Szyby (feat. Alberto, Bibič & Josef Bratan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abd7374f52301bb482af884704aec58f0505c576e3d12216cd0e9ad3aa204fe. 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/PLC062115375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2917da985f891358c27186bcae0ab53aea674733addf81dcc4fe665cafdd7b01. 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/PLC062256836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8f50a09a2b512d5593c088171ed48b4b4b8643d9555583925f7bf5e1b13f63. 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/PLC062363200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00691dcbe58dd7ca39e1f48b6195cc2de1127e86755810a4ae85b72f62fc05d. 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/PLC062363201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cabe6d359ea0fdf080f25557ce64c0522513b698e57e21500e0bbb27effa01. 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/PLC062363094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aa0de05118b0dadc90b503366e8e5c43a7352661cb0adeba8b3d0e1a0c2b31. 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/PLC062363203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fab7483a5bd70dd5378126aac0feab8d3e33b17ed0a51c83ae5e5af76e8c18b. 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/PLC062363205.