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 0x2139c16b59f86ac25a827900e5c8b125c7a5f9f9d587e0c91f5f120aa5ee7e7b. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9967a375-1a3c-42ca-b849-5532dc3b0219.json and https://artists.proofprofile.net/proofs/artist/9967a375-1a3c-42ca-b849-5532dc3b0219.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 0xcb45347e55d962dad9e3abedc12e71620c5daeb803fc5da384a867f07a4d76b5. 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/TCAFS2168484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8a55d0ba8cca3674cfc22693f569913028bb76ae58f9e0cfb4bf1a6c701a69. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/TCAFS2105179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee338458edcd3f3c526ea4132dfe68254d4ffff1bef6dbb8099c54dc0001c06. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAFU2184885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb011d0e12af9add117d42183086ec5338fb7acfc3318ffe61ed2eac9e83ab1ac. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAFX2127798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89f46d48d39adcf1d7a10d6224432a4fb8ca0e1de19b5da166839ada11cf3c5. 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/TCAFZ2124186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51345ba67eec24556a92b473503c353bf90fec9fb9dac74b68763942da1c3cd. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCAGA2220868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30027b259e979255b7d05afea45d23cea5b2fa5ea12cb199cac37fb641b6947b. 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/TCAGA2243269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd057869205f486542980c709167c8892f1284ef9a88e4008a16d5522f30fb3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAGA2252484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e46da36ff330a45fa1f115f1d068dd11a014454c168dd1266e7943ca637fb9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAGB2291644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5984d06626acfa728f6079a8d28a70059760b5eb8368b8eb9e8c07bd0585d88d. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:55:59Z), 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/TCAGC2222765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555ebd56b47634dc53b14fc6f929d3511e8f69c553da4ea81da3ec1c74f2d71c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAGC2223017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222d8fe013f899448452765e485f70c0443cc2a498fe50950dc2df1f2e3738b6. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAGE2200493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347cdb2922c6ef8ddda6b02204d1986adea54b1dac29842ead1445e915f38c1d. 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/TCAGF2218139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd30f2a8892685a9f71915e1b982de8618912fa48f6954a4119cf430135b2687. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/TCAGE2260823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503c2e21589d0f848bbf6d1aeeb9602369b75004a145818e84d2f89699582bbf. 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/TCAGF2218353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e5aac126726289ca905253bc708206aaa182a3b901279adf1e8aede49c45a3. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCAGF2219966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017c3a424cbd74a514408cdcb39bc443430cd0131146d7295865e07ea359571b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAGG2248407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043e0c0af8a9bc9adb7c74d7a991d656430fff5a0bb1d8ef711fe2170eb65aab. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCAGI2201858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee809becbe46deb742635ea93bc5a1a03c42ce3c44e07e9bc6a915843e22160e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAGI2235426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c970b443ac0e11080337ad0b1cf998c1e5e3edb6c82d2a4813a7cfaa41199a. 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/TCAGJ2204521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675cf001e9b0799547a8717234fd5e15b7876085f046ded9ccc5b5dd4d2f9edb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAGK2298376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32aac9bce70ea733c479992905348c730d4a1c4a1555d7f11d2594f75edaf45. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAGM2236918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f6a7d8e053268a5ea030102cdae2f93b464165cd303ab4c386a8ff5c652e4e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAGP2204291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91b5d34a5986f4df3e28f60041d6cb341331651002b56a3608a2c087cc8b5a8. 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/TCAGQ2220813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3fd6b1fb7f7f73cc50cb97f0d8cfeb34198ce9e391c09c88a65e88fac3fc2c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAGQ2220834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1056e437a842fb5f1a41b22a38d97e4a6293ae85f0b5c0f1acdcb450f279659. 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/TCAHR2302509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeee4fba2ccb1ea81d2f15b0c86071ace97fa41fe5d026d63a11d27f1215e670. 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/TCAHX2405259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50e0aedebef17767012ad04eedde6f149f2572eadb3b379af857a403c53a44a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAIC2436704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4f75f9a7a146fcb2b5f9d8aeb676f4be4fbf6e337e22e2900db7c9b456394b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAIT2448635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffaa60cd96d5d766cbdc214ffa732eaf324b6f1e4de04640e88b51e32c4c73b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAIT2457234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427ee3113e34a18f300a61344d5990121db61b779dcc13c49f56a2f4763442d3. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/TCAIT2457292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11929bb979eb5a1ed65ead6697cde1d729b9b28579a9eddd7551970cb9616c9a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:24:51Z), 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/TCAJQ2592567.