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 0x7ce90c9dd3dd2c27d75c420116552c5c13a53a00225d837a8eb1b9b44d5bcf4e. Chain 2 (Bitcoin): anchored in block 953691 (2026-06-14T20:39:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b700ee0-5c58-47a6-8989-3a05c25c7922.json and https://artists.proofprofile.net/proofs/artist/6b700ee0-5c58-47a6-8989-3a05c25c7922.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 0xf0bceb1976d4618bb5623b856e1d92fc3affc62b575275cfa21fd5d4d8fe94da. 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/HUA791400255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5c1c97b6b7472cf439a1520715f8e48bbaa0beb27d94a2fd486fef6c476bd2. 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/HUA791400256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc070ae45ffe5bd73ec5ff98294f53828cdbbb99c2ffde273df7d7eb92be97261. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/HUA791400257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1286d4f958fbd2958110eece31e7f055baedac0f639341d18067bcf2ade50c48. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/HUA791400277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2efc5f563bc11bb6e4d21f81a80dd746ac2f3b482b43ae94c2393fb27e07d4d. 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/HUA791400279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0fd53c4f9d0f53e23623431fb699064967a219086ac739eba3314f82367cda. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/HUA791400331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0621dda7d8839006a4ab97318ed8278bab636d5e25efd3d82e906f8fa7927cdd. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/HUA791400332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1072acdc36aeea58c83080dc9e555c6199d4c9ef3e918922d70d9cb5d0fed20. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/HUA791400333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c296ce9c8b80937cd100492fab5293cd0c7970c16328ecd3022da53764a686. 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/HUA791400251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b22d7445c6e2aa49c914e61df04607b07ab28ae16a2269988d7604c7bf8ee44. 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/HUA791400252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce6995dc08583cdb33f5b3739d6fff218b7de3cf1c24746f2a01f4e5573b104. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/HUA791400253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3c16704e6052e092c3d055eb895710cb2214947ef3edf13d2dc567540ca072. 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/HUA791400265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee772a40ee9e214d326d038fcd7217ed8058e28b3ff7059edc49e458009cddc4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/HUA791400266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509c09fa73d27783b7ef23df033f839d91c21e41734150543a014c183f71fc4d. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/HUA791400268.
Bevezető És Alfahang Önálló Lazításhoz És Programozáshoz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa9d52fd867c77cb6a2a6b30f9ffc77a2700f89a9e8af7c50f862f4de5adb36. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/HUA791400641.