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 0xc478e06dd4c33c53a2d718864cca19058f7ed0df4df42f0d8acdd5c0f6d0a6f0. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f174bee6-8f3a-4674-91ea-ff5d29e3681f.json and https://artists.proofprofile.net/proofs/artist/f174bee6-8f3a-4674-91ea-ff5d29e3681f.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 0xa1a0801f9e546aed8f8d26a675ab558db1c14d68f867605cfc20ccfb3ce82c04. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USGZ21241780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f54d6305187140276c2299b662504436c1d838e5a062db392903243f9f3481b. 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/DEZ041003369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c9c24c1cb86581340a4a613681fc0ae1e6e28c4c7724106e5c3f38d065427b. 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/DEZ041003371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29d9568666c145c70b8722af8393399ce0b8b04669521aaef5eeb3be501a53d. 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/USA2P1546350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a3d1947b38dd2cdfd0e4d4f57e45557981567fac7638eb48252c36b1bdfec9. 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/USA2P1546352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bb89ae16389f739fab946712689ef105a70f98fecab331168eeda8ab34b7d4. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USA2P1546362.
Con Amor Para Mi Vieja (14 Songs from Havana with Love)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b1825bd92ecbb7a3a3eb01a2a0bdfb96aa17e87836ca0f3aa4439be6eebebf. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USGZ20927686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cab39f0794cdda26df3a34d9c8b13a92e34542f29fc1802f1e58215500e337f. 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/USGZ20716735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5ffffb0df43468a5cff6da15c21c5194b733602e77873eb5af5ab43a7d268c. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/USGZ20601204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bd9e258b4c275ac467ef854e695e7b82b103195b614f5866cfda2d0a4e6d4d. 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/USGZ20928183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49595317798af0341071e29eeeef1e3ed17496c7d1cb2ba10596f084b40f0fec. 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/DEA311101423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d3984ad6aa2a9f65fe92ecdc9c042877c5abcc0f2b0e681aa0415424acd7d7. 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/DEA311101364.
15 Exitos Bailables - Verdes, Pintones Y… Maduros (Digitally Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cde664bd7cb46ef9ae25e096be29931017e10fc43a0c31b6a7f45aabf04540f. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USGZ20603326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2abfa37207826a14a5cceb40c481bbce13c2cdca0bf9fa13b5749c4de14612. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USGZ20928181.
Sound Triangle Records: A Miami Cuban Funk Anthology
De La Salsa Lo Mejor (Digitally Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5fe58902d7984779ea6db977f6ce06e7cff412c67c693dba42db64fd4b82c2. 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/USEEC0611275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b2f9f23a6c1bf87f432369835ee7f8eef0caaa9f7a81b973549a92536cb20c. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USEEC0611269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dd94c88dcd9faac3bdfce7c495ef6fec7a06d6c30d77a8220215c913745e1e. 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/USEEC0611265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14f849396dcd363d42402eda0baef8ba4c4c61cd687749635ed75aa45246bec. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USEEC0614946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416ea78f990bec7520f9482c33f84bd9381961ff9e8a358f78b6cbe23676c7b5. 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/USEEC0614944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83d02c6b46507cb6c886eb32d0e7ea043a7ded2c011c57bdd52a4480b20aa50. 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/USEEC0614949.