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 0x65446c6b1ce5e221836836cbc8c844b0f97a376dcc93454e852315be282db819. 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/1545bb7c-afc2-462d-8014-016db9413a78.json and https://artists.proofprofile.net/proofs/artist/1545bb7c-afc2-462d-8014-016db9413a78.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I'm Having Fun (VNSSA's Fun House Remix)
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 0xd8b48891b28ecf71dd2e33c3289ae8b3ab75e6b6ad0102e38725ed055dcdd7e6. 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/CA5KR2315705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb017c42c17568a309b009f5de9b69dbb4c0b785bf8593529da988f51265654cd. 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/GBKQU2089801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a6d6a3f13aab7c3b5fa5905926eda16659e145dee2e78285cb33525b9164c0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USZ4V1900319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5f61e3a24d80e62aba9e5a5835746996ff7f8086d4bc40fb95fdcb02062548. 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/USZ4V1900320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5403504c03467469413f64b681d8c5447312522978cf8dbe8870d37af83301. 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/USZ4V1900333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46c52c7f0db8fb7c031be234a819235c06998d2d753c71d2cb013e3b582daa4. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/USZ4V1900334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9969745a1045add1cbcf62421b9146f90f058bcd5e7e8a919eb6770ba4f5c3dc. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NLZ542301517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bb1dd2809b0d4ffa3c21f81b7693e135f15b7ef111e14b4f59af784c1ffa7c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1506355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734f7b336b8c1946cfb3b4ae6852671764ba51ff548abf7b8c3299dbe0dfeda5. 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/USZ4V2300185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24191ca1a2ac0aba39ee47d9d971aff3ff436b8b9743870b59d280b60a82e2c3. 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/NLRD52302403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fd46d4dc663f415f3e8bcdbf91052736a2c165c707783247e84b878f892ae9. 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/USZ4V2200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419cf541a92ea157f19b4705fddadd1519b30dc4bc5a7fa2b0a5c8f651af43b2. 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/CA5KR0012713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e439e005b1a21bbbef0f7277b8b1bea8c70a9002232a8ca2177b86ec6834094. 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/CA5KR0012714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc043e696f4026b00841eaf3f6fc5161602bb51b98d2cf9c1ba074fb929b13a05. 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/GBKQU2128319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ef05d518e737f25b615b81f36bfc77b8176d0499ad3b2878ca18dac4de819a. 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/GBKQU2128320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9bd9d90b65eae93069063edfc094e403b7f9fe641b8a914fc789364aa398d0. 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/DGA062008447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345812978ad4207ee07452e529ae714f30b96a25c976696bbdd915640d8b749e. 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/USZ4V2000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367d58d38919f547eba20ecc9ece4f1663d10991bf19b3c9a81a8c08a6a5d80c. 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/CA5KR2023449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8759716d2eb8233e12fe4dc1bfaade3e061d8aa366142b413a368357907efb9. 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/FR96X1982239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44962179c11eaca593588fcb0726c81133337fb68b09c67aafac6249b9be4af. 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/GBKQU1997607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac5c80b294591a27350698408a8ae50e69637a6f537232fc0b20ffb2e777853. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1525794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b48891b28ecf71dd2e33c3289ae8b3ab75e6b6ad0102e38725ed055dcdd7e6. 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/CA5KR2315705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5ed105cb53ba52e73235e555a5afc025719cf9a38a79b5e36c793ca52a126e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2534035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953372f084bf9af9e6706fd471c8ef0c27b669a37c2159c0ad00cc157b00982a. 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/QZFPL2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2919a6383642bc76eb8cc3be5a63f20f47d221d7754c493fde5f6be2b6c0c2b8. 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/QZS7J2458521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069cb9b9a20480c23052ef1a591de668c953847e61fa3640a206da3d0f483194. 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/PLE072419503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaddcce6b95e47b3a68b4e8d0935aea2e757cf46a4feec9bd217cbb790ba3c49. 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/PLE072419504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8cc57a447d7e0bec50000630f9cb3acd4f546f87fd4bcc74f65281039a7c12. 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/QZSYP2377724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9bd9d90b65eae93069063edfc094e403b7f9fe641b8a914fc789364aa398d0. 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/DGA062008447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1226823d94e1fa12699c82347b2d5cf09c1b0bd19e851b77ee0633f5e38f99. 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/AUXN22063026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e73697ca5189d35c396ba244be12d8ca1df50d958622fd03b669f9dd2cce960. 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/AUXN21905976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac5c80b294591a27350698408a8ae50e69637a6f537232fc0b20ffb2e777853. 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/USUYG1525794.