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 0x06f9ce72c8eb6115e6864f43fb12650d497a52d75ee91b2da258a9b428a6f801. 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/0ceb04ed-65d0-4772-9cfc-5f592a49f67e.json and https://artists.proofprofile.net/proofs/artist/0ceb04ed-65d0-4772-9cfc-5f592a49f67e.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 0xde0efa5afcf401f21be2cfa49720fafed314448e758f094b7b0beae1d82db4d5. 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/CA5KR2436215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647a5b7021636ba43a75719b5f26a4326971e7bbd4400fcf8de392e42ebd75f9. 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/USQX92301981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cf931474c2550a0e493ef82a9fe48e84342d3c8611765ad9224a9d0e3f7dfe. 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/USQX92301985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb4fb0b6db1a45fb90020fbdf933fefea23f0dcbe9f184f407056fdb6063ec6. 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/TCAFR2115104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a2b2f1bee9c4bc7f6890e6d97c89132827a71eb2bbcf0f1b1cb8b79081216d. 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/TCAFR2115108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fc9652031179ef5ddfe0e733f35df5029aa3219d5290fb78c074d43497289f. 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/TCAFR2115111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5bed9be01fe1ea8537fc1fca3aa9190267a0fe18470613f957f72d123b1664. 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/TCAFR2115125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2775e2a7eea3d29ee51c10c0baf5c915a37ded4e05f3b411f51e0c10884f9d6b. 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/CA5KR2252786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1922ffdb25d95de938f354b1e894940a496c7122c44a1237ca32715498ea261e. 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/USQX92304229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ef7ea1d12dfbf92430c5e13e6d80d320e9a437b1ea95a4e6cc934d064522e7. 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/USQX92300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33179442ae4ad60836bd25071710c73db78691704068701283abaa524c2bc0c4. 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/USQX92206190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2901a666dd019f649b3b21fe1780541c285b0d5d9832ce08c4a9e58903ca878b. 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/CA5KR2267607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea636afc5a15db931b6eb66b0d28d887bc559eeca2ec6fe703fe7b675cb48a65. 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/CA5KR2267608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7022bf1fe6ad2c4ebd93cdc999fc2491aef155b4e3d38175a0ce019b2f29d8. 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/CA5KR2267609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd72a72f6bcce890fb04f5f73483c95af71625fb8c595c564e2ee1d310733c60. 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/QZDA42278719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6034c2c7f7e782e5994d597054c8995d08136807bc49d7cc2f5620e575bc698. 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/QZMEV2271266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcca4d01037acbae90c2d286003821df056be537e5ab257bf5e211815246734. 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/TCAFU2111016.
Extra Clips (feat. WizDaWizard & Wam SpinThaBin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194c4df52df073ac1530c98cb431787af4d2a087732d0acb88e852222c9fd82b. 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/USUG12309492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21eaa1daa7173b7091a51727ab62101d9f92a6de2d9c1b0a88b5fd144e963e34. 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/CA5KR2321726.
Church On Saturday (feat. WizDaWizard, Wam SpinThaBin & Syko Bob)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30545d5d6aba732a31ff34a6f4f9ab7958b7f9f9adb50b3ee7fba7bd169f1f8b. 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/USAT22304652.