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 0xed7f41cfcc4ce7dfe29fb0a9e6fd9e36fa9c440f9d56d461120970862fcfbdbf. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a65c20d-6012-404d-8004-cce1c7fbe35e.json and https://artists.proofprofile.net/proofs/artist/1a65c20d-6012-404d-8004-cce1c7fbe35e.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 0xbbf8f995357fbde9f70be9f130688efe8ba5629498fbe57cf8d24af7983b944a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES71G2249026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea329fc8751de24d3935d608dce49ea185284039299db7caa8bdf4b25a310c4. 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/ESA012305233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e05d09fd303c48032c5f1f1b3b387ac5f37674f32a7954c3ea8e639e80dd5a. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/ESA012305234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62421338658fd59cd47b9b589365f6d0ef101c50d35b06df5c1d52251041c72c. 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/ESA012305235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9569392893166a965357aee3fc2eff4376c5e0be18fbf631d2eed2f1ddf06757. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/ESA012305237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f89d619a99641f0557d91c9144b8761345d2399ac202cd6ff2593a827e3ea1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:15:56Z), 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/ESA012305238.
House Of The Rising Sun - Handpan version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb2e6b7d759da2b891982ea42897187c65ca1cf87174e09bdf87a2a094134c2. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:07:13Z), 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/ESA012305239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62d97e3c6e5e569e23fcb00a8d0a0874cdb7ba69ca0c44f9811ca57295bd0ee. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ESA012305240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee25ab4f602da45e30ecf1ac6db82aea904e632b219c7cc33f421e1db90a912. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ESA012305241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb5184f66a527c1294b0d4c9aa532a233c394b955e45f32911b4207971a0f21. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ESA012305242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2ee00bc52308a7cf4ade8fe786fedd75fd7fc879cc3ca94f7fda345b64e832. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/ESA012305243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358c654150c6f2781acacf325d7440bdb0e02caefadf24a48b94db872fb73026. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ESA012305244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57bde21df2c1f6093f2aaffcee302d2380fb045bac50162ecd953265b4a9cf1. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ESA012535303.