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 0x352886822fb55f9575d42898bdd99e52561bca7bfda4422679abe7c526b311fc. 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/a804ed04-e75c-478a-b776-8406d7dfb897.json and https://artists.proofprofile.net/proofs/artist/a804ed04-e75c-478a-b776-8406d7dfb897.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 0xcf5371e571d60ec0d69b66e71cad5fde098a5e0215b85a1304153cda8fcd9ed3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/MYIS11001096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006404e596f99e773729e6633dd9e352110268fdcffdfcabeff5e56678c67e3a. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/MYIS11001097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de9b15954962e0d9a40c8498a530b0ad826a9d149e49ae5b668aa33846e3b35. 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/MYIS11001098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d056a07d732a08557404107c1080cfd29b01a3e65de296b129352262584fc5e. 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/MYIS11001101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173825c411a95a82b8b4ff987f723394a5bf910e4dc42bc4af031062c9a6bee1. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:39:54Z), 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/MYIS11001102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8f56e0eacd8fb8b78495ec5c9a77f6a80e5d1c509149388b0dfb24b7744751. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/MYIS11001103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98e3605c3e8b3effe27d227ac872381d890bf4f5419c7448e61a42f14a8722a. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:57:46Z), 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/MYIS11001328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97d6b6f9aec02f7972047c6fe053779405b7a18b0b62ffd7af5f177d307f141. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:25:42Z), 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/MYIS11001329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f3fb8db4c2c1193d1816886d264435b47baad478eeb657e9c68490c227f93d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:25:02Z), 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/MYIS11001330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089fd2c34780f1ac4e39ce421d9f6e84f4c97bb92c8fe4396f90fbea9cbaaa52. 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/MYIS11001331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df76361477bb9d606e398be8206411c2e62d6ce314ab26e1a10b12cfbbf0e0f. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/MYIS11001332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dacec071292303bfd9ba2278b3b5dd545fab0b1ee1fabc40ebd243a03afd16. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:59:26Z), 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/MYIS11001335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaade20044bbe3a72d739cc9e21ec19a5511bc091c3186686480414d6af6200fe. 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/MYIS11001337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496e8a2f96c9c11eed5b6b05ebeffb362ac2803ffd6260ef545bcb7b1e7c3222. 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/MYIS11700122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee270f2856ac89e52360f4a8a805b77403e3e8146a194658a883c896c1da6c2. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/MYIS11700123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb98839b14c360f00274ba219db2a575764d9cfc5aedaa14fec8f3f174388bec. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:16:47Z), 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/MYIS11700125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19a262bab4e46205a61bfc14d8aacde66ecd29f75f6d099c12f4280bdbe2735. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/MYIS11700126.