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 0xbfb7cc4c6380596225918315af3455c6514e07c77fab5907ad45946ccf733dbf. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63197832-2e69-44d6-9268-f71730fe3bb6.json and https://artists.proofprofile.net/proofs/artist/63197832-2e69-44d6-9268-f71730fe3bb6.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 0x2f437d7df1150b234994d64fe8f91b28604d701c206a0a621aade2cbcf0cefdd. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBEWA2106080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428ecc72df1b80544192af800dd6c6494e0d2fde0c286bde264b387c1efa4656. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBEWA2102871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca915c504315750707be0a4b7a629e80908f256c374e626f07661861af582f02. 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/GBEWA2105600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428ecc72df1b80544192af800dd6c6494e0d2fde0c286bde264b387c1efa4656. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBEWA2102871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47dac0b33b17d9d31f64f9797cd14324308ee0d96ad28d46d7cf465d4013ac30. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM6P42427605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3138e483e4012c3bc3be1875ba6f1c26c2aae5ea3799610aa23e66d769ddb9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM6N22464409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d832288a94690e60f3839a45dfecb7b5333f61cf63466d4bd9b267da3b23407. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLE712200254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42576c283e26eedec6ad23f04b32305a5fa1f31d6b740f018403ba123af293c. 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/GBEWA1906450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bc0b676ff61db56ddb22ebc828d5cfb45e266916d5449f010da839659cfb19. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBEWA1906451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82a4ef58996249ec85169af5271937ba69d0090ba9d07afa02b8b99fa83cf68. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/AUVC01737510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53805b4f3e11a499f767d89addabb3fd994b4db6b4e1d26d3c609a1075df8d54. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU1568165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96dbe5b507d80c53127e1c3e99d571dae3561d541080bbde3d46d8cd5269005. 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/GBKQU1496549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca915c504315750707be0a4b7a629e80908f256c374e626f07661861af582f02. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBEWA2105600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd21bad127adf660fc0079a24d5d0efbb948e6bef3a9150682da90a61d94a96. 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/GBEWA2105601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428ecc72df1b80544192af800dd6c6494e0d2fde0c286bde264b387c1efa4656. 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/GBEWA2102871.