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 0xe62e11fdd38193e4f2791b740fb50f9f082d9df9f6ba4674b7e457766981d4f4. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97c7e6c4-1531-409a-80b1-d02321057606.json and https://artists.proofprofile.net/proofs/artist/97c7e6c4-1531-409a-80b1-d02321057606.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 0x8c52a51bff5ac6c8d44a16f434d8d3e0c12e909d97670620e127dfe5fd0becc9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QT3FD2588918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c236d74f3d2117c30ded8a857f9bd60fd4a1069708037d7f6c9cd9993aad80. 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/QT3FD2588919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c9d645d9dfde2d362e3a0396701d081460ad85ff3c2e9a38dbea6e5f223378. 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/QT3FD2588920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f104873c796f8e99c395ae33f23c5d040a4672a94d53d07f194680598722a1. 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/QT3FD2588921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe117a1c6a0642390eb15c085443518fba8151e75cab6d633ba2014a21f04d2d8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3FD2588922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832fc97574c7f35da21142cec2db6c780df46b279cbdb72d5649a822a1ef9b5b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3FD2588923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065ae3de5f0f09c71e8c8231f3dc1a4da359dfbbd5518cf7bb6d2f3c9ed61e7d. 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/QT3FD2588924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc884226356737bd1258e4c43ddf7a163c60343fa02486c2b3be1e91b7a2a1c47. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3FD2588925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264ada659224a2dc981e7b8af9f4eac6a54703b7b49ca4f88511498fbda796b7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT6E82541518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae29a78c4953149a3fcd2141bd9fc377f896de4c7087cd735c55df55fd935ae. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QT6E82541519.
クイーン・オブ・マイ・ワールド
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7038b9d892cd0b7e3a4af06ccbded50b82c0f5386b92711cba4dbbbe5ae7960f. 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/QT6E82541520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f8e89a6a010cc3374445494a2a3ff9e3b012602a18ef1c4106fbeb23907f14. 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/QT6E82541521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c58726ae8670b208f0faabc1dc541ccdb327b5af293e10615f416fb9bdf111a. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/QT6E82541522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4b54e238c7c6f9217099d0ab24e2338ad62ed0ea02642b358b22952fcfe873. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QT6E82541523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938c77dcca3fb2bd436d0156afc2d4132af34ec04a36b46b88e71b1dbaee9ae1. 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/QT6E82541524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1be8d0e187c68923c967edbf73b3cff8c6d1b71c941f4e5df6a6c028a113aa. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT6E82541525.