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 0x7901c9f8c1268354df771efe5432f12aae30c4d72acafa102404068d306ae3a1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d07138d9-6ff9-4d91-a9a7-1be68d85f6f7.json and https://artists.proofprofile.net/proofs/artist/d07138d9-6ff9-4d91-a9a7-1be68d85f6f7.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 0xb44bcb070e680d348cd8d14af0ff0ca6c61c5da2fec0bb05e3ba22ac5bb03355. 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/BRUM72102155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe931ec6848acd9d04814b6f7f6d5a83c8fb4553e110427f4702f660b13add8bb. 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/BRUM72102168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090bc2e09fd13d6d91e83c1d5cbe7b97d7a209b1da2e306ab8432a9ca25db1de. 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/BRUM72102161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251699a6ec18944e6737dd9e30db9a06c17eab230fb6312590e30ba10c7e94f1. 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/BRUM72102162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029d367c9b9ce9596a3faf9edb87f3e1a103781bf3c260cde1e60ee25e0809d3. 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/BRUM72102156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928ebf4f5a5348d3c2310c77e616fedd654ad1afb2c6de8badc0c507979b0621. 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/BRUM72102166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4fe9d4806f70bba5650718d46b177d527f3732ef25e547bc6fd02c3be7a50c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRSME1800900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a88a4791ca8accb3d95ef7dfde6272c56703e34d09b3d7545330a98b5816ab. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRSME1800901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff2bf1566893d3b678b57d7fe2453134ab05f2dddadee829d8009a22b1c4191. 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/BRSME1800493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea15acf1909fd648409c240863359a548a32deb4fb8b91a11f286ffe13db254. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRSME1800902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f06042b00e2800104748b9b17bc96285628250b23df63f89b15077440767f3e. 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/BRSME1800171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d326a928faf690807bb88be051fd166573f2894241a6c9252ba6c9046f3c0a. 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/BRSME1800903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc668f11203a78f5e231a1dcceda85d0799cd2b96a82fb2b9e559b8bbb9061910. 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/BRSME1800904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c24948848ca62fcbe68f5e0582749eacf677c41170b5c8be44277a912a2380. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRSME1800905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10add0107c8b328c54f2a9f8b29482a8af5fe19aca47eef1689893e6738e6fbf. 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/BRSME1800906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80088a7c4a6aec28fe365121d6cf779998e92496352deb50e3c54a7785945b64. 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/BRSME1800907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1f9be05aa059a864b356e828847ec906fdce7067a73698820c9c4439e17069. 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/BRUM72102165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f06042b00e2800104748b9b17bc96285628250b23df63f89b15077440767f3e. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/BRSME1800171.