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 0x1cfae2019b04308bbba5bb1be6d3afc70190f57b8a5e512ba376623c753f0a82. 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/3e577ed9-5e81-4802-8062-6346c4cbb4bc.json and https://artists.proofprofile.net/proofs/artist/3e577ed9-5e81-4802-8062-6346c4cbb4bc.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 0x5bda4c935ebf97b5a7d8a4659cad11c65246e20439e1924dd2a6de87afdc90e7. 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/TCJPT2208375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801a8ea5cbcdad65d71b669c280db413b72308d25adc217f3936ce3be411f452. 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/TCJPO2130011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc0003771efac7b99f9dee3d965e17de56e585cb39b3e74996b6fc302535903. 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/JPWP02300777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07dcac89b482144f49b65ac982c88dbee8471f29b8fcc17784a7853e7efa77f1. 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/TCJPV2379001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7423e21b66b7f0e763ba0a7768e0d2cf0513685f1940a97f21ea97c93b5f127. 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/JPWP02201808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b96741271a9c5cda358e860bc8377a1d67fec5bac50d0a6dc305d10be31b9f. 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/JPWP02201265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700d74288daf5c7e54ba3880e773b950e4a7d090cd0b03dfeda38edd21fd5da7. 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/JPWP02200803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ca7519f63162280b7db5be5507b3d1935c9a3b47d5fa9355b3442a37477ccb. 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/TCJPM2073046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76071e6d03e96a9c2211db5dbcecbfec72000f62ba32bb737aea55f0ca240e9a. 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/TCJPK2065888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f2be82ac6e9a2dc3672eaade409c67498ed3fbea159c7d9d377ef7b8cce208. 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/TCJPK2034624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f5b1b4c446925806c57efdc3ba7a9d2d91e6614dae3ed91bca24ad76f18362. 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/TCJPJ1953359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa842be829e8a674d7edbbb8cf682967446065df5054313ecb5eb808c5765dc3. 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/TCJPI1823586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b80b3be56e4c1544ff1d6530731ef02368bce2f0e5278480cde20ed0246d4b. 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/JPX601800129.
博徒2020 feat. “E”qual, SOCKS, ¥ELLOW BUCKS, AK-69, 般若, 孫GONG, R-指定
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4081a4f7e0561ec2c8cd81b2b67d90ddde1cd180f2b8726c1113dc9cdb79fb33. 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/JPX601900019.
Dream Melody feat. VIGORMAN, OZworld a.k.a. R'kuma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55db9363ddc58a520946740f035953f7bdf7dc22add5ace7cf2d9ead30ad34fc. 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/JPX601900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea94e3afdba7ae63e27c3af84e80cde1806c967626fc57682e9f3482a8e413e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPM591001286.