1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xe38f77e56c47eea1849993a8c69d8575b82d1ddecfcd06217e05856ce33eb637. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfa6a05b-8c86-4914-86be-d3cb41bc17c2.json and https://artists.proofprofile.net/proofs/artist/bfa6a05b-8c86-4914-86be-d3cb41bc17c2.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 → block OTSBitcoinBlock must exist at that height 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 0xf49f33f9e1923b4246d12e1211c906355920d1c26922a21a6684ba90d97cc0d8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZ5AB2073750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c0e7bae3d7d1fe0870f0d2442891272c17c5a9df5aa7e4257433f40b50a2ee. 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/QMPKX1653943.
Tres Polícias (Van al Cine) / Eras una Playa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a4c2234db3c54e38bbd8ff797ab95d482b112a275a21d78402b5b31e7e6220. 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/USHM91730359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4899f1fe00c4cb139c132e82a1e9347abf2f46c4bf99acb96dfeca42497e95. 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/QM4TX1794380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039797dd3c8f2d6886dc5c5e57daf38fa63b7470ae62e7e8e249ebd45bfd0808. 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/QMBZ91649236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0451cb1df4b8d3516fa9751a806fddefa448a1c80f3a60e7dadda2be9ec667a5. 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/MXB551800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449494d6f1de3213ad602ebad6607af9d95d5e9e34f61b38680d1fe78838f444. 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/QM6N21776122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdb1552342d039dc02f8ce8e2a16411be8aac9115ff5c7a7dc019c5af4fedfe. 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/MXB551700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5614149c8f7d6bf7822dd5ace03b9918b82a14892c8eab38d055c0aaaaf920. 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/MXF821800308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fa93a32a35179bd2a391706458aeaa9c4dda0e35764817c675da85bf6b1ae0. 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/QMFME1565394.