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 0x0f3b6cd33ed57cf2324ccaf444a2d482a493e24e6fcbb597b2bcca8cedc7b4bd. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/859f6e2d-5f57-4f2c-9e6e-70001aaf96eb.json and https://artists.proofprofile.net/proofs/artist/859f6e2d-5f57-4f2c-9e6e-70001aaf96eb.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 0xdb4d5b94a760f6b02eabd41c53ce8f5f05352008699e4839dcfde028986cac42. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USJE61303271.
Cuando un Amigo Se Vá (feat. Hector & Tito)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf4fc7546ea2f37e9052c80890221014f13b8422ffe2a1b0e27e8c043bd44c7. 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/USJE61303272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8694861f5d70a55161099386f9cf17b09551c5c909045e761dadd383d899083. 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/USJE61303273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7105350cf71997b4a1aaed075f7bc47f2d162359df004d0565442441e9f3b0. 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/USJE61303274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a3a31760a9438ec63a900562db7c682f0905c6d349dcf0b08696425ef34986. 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/USJE61303275.
Intro (feat. Gavo Gil, Coo-Kee & Dj Nelson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b477e5e07c4cd24e8fbc1c9bd4fd0bd11bad6b5d67806f0a28dfd3eca647605. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USJE61303269.
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 0x83ff605ed9739ba316b132385a0ba3edf697d5186573bf572b5b338573bc8aa3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMEDD1300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d160ad9d97969263347cd22d9a9773ff168ee90d4bdca07d98ae7e48037b5fe. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMEDD1300160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2841c0f52f5d46b523d8ca0247b500fcf388497733796c36c82b4d426ff08bda. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMEDD1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cec1333f23f83f7086e17ba0f87bb80105c060493f8ed996590ba44953fd57. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMEDD1300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1520f0df4fe434c84835baa316459809b0d28d732cd4070f37ecdf0133ac44. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMEDD1300163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14b5b829a205d51226c23e6f4c6dc2c0b61e12db4c461d5caeb7d63fd05dac6. 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/QMEDD1300164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d5f3bf21d7a01a0e9e55f9cd044804a95bffe63aa2eea862d5b82dc74f2509. 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/QMEDD1300167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578f1730b5cdb4cdbe41253980126cad3ad9d45f2126773d33f29ecc97c27ea3. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QMEDD1300168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ed957d1d1e3d58eef4793307fdfced0f1bcc269325d129551ea3c5c95eef43. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMEDD1300169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86872562a7b889f2edb133996651f7cf09c7f848f50d3b93d222a46ebd88d1f2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMEDD1300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0e35182e925aaa54146716d1182c4ebcf689a30f0fbab3e643fcd450e8a92f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMEDD1300171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4d0fe9e955cddaf5ddc784d05c6aff2b2a6923263b0d62f6dc4f64dd4d6b72. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QMEDD1300172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3216570d54d25b2caf220036dbd0f078becc35a1ecbbf561fe93c8645a08c99f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ESA011566528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc438c94b2289ed23da8e82795728a8807aa6736e32535a52e5e079d3e93cc62. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCADQ1876695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428877966d26db0ea23764d1c77d733dc9bb9782ec74cd75073ceda8259d7b84. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA62369255.