thumb|A Christmas wreath on a house door in England. thumb|upright|A golden wreath and ring from the burial of an Odrysian Aristocrat at the Golyamata Mogila in the Yambol region of Bulgaria. Mid 4th
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 0x299eb675ea4d04f38d29c0a52012876c535ac40458b1ada987e1f52a815fa899. 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/375a13e0-778f-4226-8aae-4ae0a3078050.json and https://artists.proofprofile.net/proofs/artist/375a13e0-778f-4226-8aae-4ae0a3078050.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 0x70d32bbc1bc5521d1bd2d56e6b9c203c11c65706a5ada317fe4e250fa2688645. 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/UKR6V2310354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45eed151af878bd82ff63b2d27885549b8b2017c6960f40faddb55cda5fd786. 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/UKR6V2310430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b599eaafa1663619c2a08fe533adf3a74ccc90554861b64addfe575a81effd9. 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/QZFFG2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ceeac597cb986fb22a3f03ed216528f07124939512519d33c22e147ec8bed8. 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/QZFFG2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0691e1ab0dc70a2080cddd3c832d36dfe4481767ebf964278c0745dabd580e2f. 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/QZFFG2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a0de6b4a435efba7c020a83e04bbedf6d0db01c3aad1f366efba2c0f63a5a7. 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/QZFFG2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef72515a1819171a416cbe33d950647a79b2ae1c8f20d2855af591df9c28d74e. 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/QZFFG2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46346634969e591c124a810da703ebdc84d1d01ad60ae2cf3fd31ed01bbad21. 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/QZFFG2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79aabf1fdd9c2ec3e75690d700e9158eec3fa287ce458dd37d78ae287c33551f. 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/QZFFG2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00aa8647fccdbbe8e960ef1c700e2e143e0340c9435f75510239eff801a9c86f. 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/QZK6J2089080.
Slowly Remembering All That's Happened / A Relocation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf214c4e21d6f391f2bc7c3278271f088b64db244573b28f72918dcee1d9419ab. 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/QZES62034706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdcfcf2238a33f8c9d11cbe99f72f19ebe4f9c2516028a70aaad77fa1cb3c4a. 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/UKZGC2409345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bd0a2fd1726a36a9cc83de627a1ef78b484a6fc4d14abbb1a8e2872bfd85cd. 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/UKZGC2409275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ca733f29d354356a0fb0d65b686cac87cad8927cdae1b486c4f9e413179284. 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/UKZGC2409336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d430c0442f2f19a6b966997626120408bfe75d95310e8c89362991226c7ae7. 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/UKZGC2409274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7206a1affca6f22167eacda4e08e570a171c94e4b335a677b3b547ead1edb971. 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/UKZGC2409331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5351c41691037f60c26510f0db9e06335ebef26b00b76acd1a86ea84286da6a. 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/UKZGC2409273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39399faae0b1519591e335dd7d640d7af1724abfdd7807bdf29e27546ae64a41. 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/UKZGC2409272.
Moments in Movement: Multi-Textured Ambient Music Explorations