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 0x5d50f12f18eb293a04be971aa7950983c8a1e4c267a796acbb317ef3de094db3. 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/a61c9a92-73c6-4077-91ac-599240f83a52.json and https://artists.proofprofile.net/proofs/artist/a61c9a92-73c6-4077-91ac-599240f83a52.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 0xf13464a35146c51d96ff2c1a843805edafe3c094824efce7102575bc39c9eecb. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZMHN2080081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1971e5173e7d03f5b147886bca3296be48496539424c370c7e7dfe9cece67861. 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/QZKDK2108835.
Secret of Mana : Revealed (Instrumental EP)
International Women's Strike EP.1: China
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa903e715537fb9c02c839317b0192f829a1639dd617c72bbac5e17f486b1caf5. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/UST8K1879448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9334c456ea422f31f7e1d610ce17301bc8da14f44f4e80e345ec2fd9229afb77. 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/US3DF1618872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc316598ffaee86434898381b39710ab9d4073f09bfff2f15d98fd1817bfedf28. 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/QM42K2085211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669d2403ae09507bf7c4c2de86dce5a54f49c4f2296fdc85f02441a40abc4f57. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMHL2048593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38aaa4a84cdea9810fff08c0425a9d953c21c068b0f69f7151e155b03688f58. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZS652193350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba586783287f5834ca8aa44abdc68aaaafd900120789ab940833a04fff4f7136. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZS662173636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb45a79972cf99e7b114c1da72c7e378fa90fe77eea96bed6cc785d5d93f9d1d. 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/QZS632100602.
Worldwide Warriors (Inspired by. Street Fighter 6)
Nina Williams (Inspired by Tekken 8) (Short Ver.)
Mtg Rokkaku Gouji (Banzai!) [Brazilian Funk]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927b8af09e353a06bcf0b98dda440de795d9482a1507ebfcb58484a9965d88ef. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZS632566658.