right|thumb|250px|A typical Nicaraguan baho Vaho or baho (both ) is a mix of meat, green plantains and yuca cooked in and served on banana leaves. It is a traditional Nicaraguan dish originated from t
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 0xc5725e54704d20edce6a5073f6865d9612619ed18c1701bd37ad858497b4469e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe4cf2a5-4886-4a69-a0af-66848fc1f7ee.json and https://artists.proofprofile.net/proofs/artist/fe4cf2a5-4886-4a69-a0af-66848fc1f7ee.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 0xdd952d38102599f7a0921c6a33d89ba8f483d6e44e078bf293730693090e443f. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:22:51Z), 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/ES71G1712715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd87ba5e82924d098f1a6d6179badabf3260f788adb06941957061b24810393. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ES71G1762069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc5c92d842fd488eb91754f40a64fce1d6b641ac5ca1c95c678a571e8b18967. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/ES71D1800077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051df26d6c6d83b3c53981a35dd91d9ba46f1bcf0bde0c3f13441e8473424c2f. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/ES73S1900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b918bbe145804342a5f476e57e05fa0222f6e10abc5d8417a50f7186ffe3c7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES73S2000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f97a57bdd6b7e64d499a926c78b2fa328c69f9fe2caf6ab7539553c198f7910. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES73S2000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95b801e56e9710e230fd85e6b5d4014d53d1df912da1e804fcd5da30f4d35bd. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:23:18Z), 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/ES73S2000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcdc0b6671c406cd4a2a71420bc3326c27c056e3b68510f0d9ed83267a15af7. 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/ES73S2100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd597df68149dd0f6f78007f413e9c3526b188ded638a7ace4b044f806f49fccf. 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/ES73S2100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d4146296fd1f9921555ade1869fa228054288d71839f367898f5eab8f0117d. 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/ES73S2100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fb9bf06b217d071b7fc99640b121cef19dadfb971bf6c4734b61ea86675e8b. 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/ES73S2100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047b1d2d1eea9d264d295fa6a766cbc356d08a94dd6255aeafd17ae8fb321f03. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/ES73S2100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6037a964317aa8374fba62d94fd6592d4d1f1706316aeaeb5c9243380c3bf588. 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/ES73S2100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2364ac5037bb97f445cfa1232aa3316c5b6e2333a0d90ece785b018fbb3a62a8. 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/ES73S2100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcdc0b6671c406cd4a2a71420bc3326c27c056e3b68510f0d9ed83267a15af7. 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/ES73S2100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb29776a51695ef553d78c1056b90acf2c14c45a903cf63cfc15f336347a94c. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:05:34Z), 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/ES73S2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae230f24d82ba628d018bacc3294f083811866dfdb40e9de0b85ae9c9e8f61be. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ES73S2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f937b08acc814b974c8b9de3f34ae6a67a4112e4885c970eb913667a88cdb9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES31E2301087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6685ed8bac5839c1e3f8372a5a9db56ecb34c873706436da601953074aa0b21. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ES31E2301647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714b85f2232103b4ceaed3527216bc98bb4904a208e941265943efc9d7634bb9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES31E2305485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f1f90fd7be62477113996e350468ea22f370e71831a8cf11d668d5f12d5bd4. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/US7VG2480989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120cc5d56fbc9f9ae2b77b0c9478c99b508018104bc55a073d97bef6c65f5e80. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZGLM2449795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc189f6a252bbd504b654dadbddd2e2e660ec84a820dfc1186f7b93c614b08cc3. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZMZ92471849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd2235b36912be8956880f4357b49de2b88ec71f6563eb4983cd412781af2e0. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZNJW2451354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269b75ba6c6e2b711f5fb064b9d13a90672c8d9c6b944c3d8921969d43c7ffc2. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZTPX2474002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae484eb7c271da21b75650ddc01b9c2ca5ff1c80a1d06eae7e6418d69455548. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNJZ2448187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc189f6a252bbd504b654dadbddd2e2e660ec84a820dfc1186f7b93c614b08cc3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMZ92471849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd2235b36912be8956880f4357b49de2b88ec71f6563eb4983cd412781af2e0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNJW2451354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346d52655cba0113ef8930c571b80f4f2d876690e44a953c6e2c5499b307205d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZW9K2418755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f1f90fd7be62477113996e350468ea22f370e71831a8cf11d668d5f12d5bd4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US7VG2480989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0e777cc9d897349871ed402cc3b2a8647333a6f8a01d1e657771c186f01f70. 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/ES6081441127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a093789de66329900b0684dc6cdde928eb4480110fc08cd0555fc3a1cc6710d. 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/QZNJV2361132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a093789de66329900b0684dc6cdde928eb4480110fc08cd0555fc3a1cc6710d. 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/QZNJV2361132.