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 0xd482cd5a6b70a85ec9078cdf63ce38f58bf51fee44b8fbcba39f33c334529b41. Chain 2 (Bitcoin): anchored in block 953662 (2026-06-14T17:28:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56a57ad8-fd98-4618-b304-12efa750aeec.json and https://artists.proofprofile.net/proofs/artist/56a57ad8-fd98-4618-b304-12efa750aeec.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 0xb076cd20eb2306c415a49af55787835daf83964f70416078af7ac2ce84a1a895. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/DEZC62598437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd630b4e6d708341eaace3c58f65a48cf79cb00f43e646594c8eab48547dfb0dd. 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/DEZC62598438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b99bd45c7ad00bae34a949f3bb54609aa62890ab62eaf6f36bf76144f25e6e4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:47:45Z), 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/DEZC62598439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dda469359e48060411cb8dc014decfa77fc9df9ae00869a22bfb2310b6218d5. 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/DEZC62598440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e080e4bb6c27066255fcf246579046aaaf8f447968eefa9964948acc9d2b5a. 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/DEZC62598441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7063cfc5ef125cdb809a5be4762bf153270614326486275c15d823501865ea2. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:10:41Z), 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/DEZC62598442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367e802bb149ca65dd9ecf1351a37cb2eca7530f71e2e42814fec4f4e4f73cd4. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:52:22Z), 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/DEZC62598443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1359e1b761761f96fb8246254776417a8c30facb89e9e7ddb5b2cd96461e849. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEZC62598444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edcdf3d9eb208f629634ec685d7b34e30d01401d8e69637dc0314a15c69cf3a. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:18:37Z), 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/DEZC62598445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862c756cab0fb2e2af19e423bc83fac750edc7be6e08c993a95ff7203bde7d8a. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:32:44Z), 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/DEZC62598446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e0b5626b1198954d281f0d635cb9f39dde404063caae6a6a0ad6b85deaeb7d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:57:13Z), 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/DEZC62598447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74f0be48c4b205a985f27bc09b4bcd6390b55be1adf5a27a8a0321214229813. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:16:22Z), 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/DEZC62598448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb7ddc1b07e21bd070cf0170b04429f82c771a0b4cfe306d44cfbe603f493a5. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/DEZC62598449.