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 0xd39b166e32ace1d63fea57b7f0ed03f1ceab6eaeb9018f8eb953650ecdf92d13. 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/1ac198a0-021d-47a9-a22b-49379f40e090.json and https://artists.proofprofile.net/proofs/artist/1ac198a0-021d-47a9-a22b-49379f40e090.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 0x8bc03a08d52047557d127abf37e95b4fcf20fbc87359fc887080544ee0f326f0. 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/QZ7R42353129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b56a7c0865ca52ea3c160f283a36d562a36feb7b311d0592f27c06ab2fd9f1. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZ7R42353131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d13f7cbb2c18878129618140b2594403db40294f1ae5bf4d081d18bc315f2a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZ7R42353133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d96f9cd24135a9282ea3764ba08e1952da542a0e3c75b3d9510fd2e336b5d11. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:23:26Z), 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/QZ7R42353134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae30d375245b35a90576e32d6eac61b8be8063eadf0fa57afea6ac12fcd84c7. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZ7R42353136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e924a34d905079bbe7a9ac6291792d87ebc4a94ec055878f7bab879c4e93a6. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/QZ7R42353208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49c9d3b045f8309554ea78471c34630fb6c9a520c77a72b65b8c619d9beffe2. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZ7R42353211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66512c81b3f0567f1c84067dca0179e2201ab12dc1eb5ba9ddcab3475aeda6b8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZ7R42353213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61716925abeb68b23546c5a6510e33aa09a56db8b9c7dec90f94552f23290f8e. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:04:26Z), 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/QZ7R42353214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061904ee6713eb51a3b5ea0c7847ee9a25964634eed1fcdeec0af37f7dc3ff12. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZ7R42353218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ceac96387336b436443716adcbf3bb9c011adcae8423a7da205bcc5c1ad843. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZ7R42353521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f298508fd2df020dc02352d9854dfbe6256c2262bdf3c6de77ac6de068729c. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZ7R42353525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58628e209089da2cfa25ed51c1b731526ced8681a11122f93d40adb638d2843. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZ7R42353526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae8180563dbd903078f0ed0ffae4b1951c674630d6a63bde8f81d043a2f5718. 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/QZ7R42353814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6528a5167cd6cfc52f81a8e713ff5706f056b7444bf7e61da503ce76a37cb6a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZ7R42353815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9784a7c636a3b64fa7d0ac4dfd59534fff4c063b1a314892f2b98f2438d9b3ae. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZ7R42353764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf539dec523ae5d7acaa596ab8b26351da3713132550b848668e2d1752ecbb0. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZ7R42353765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9c5480b906afd613838fb6aa19e1d8fc5cac0486e96b087fa1c221be019fcb. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:55:12Z), 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/QZ7R42353766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c30f921a8364d07e6e643a5bcc048e11d54bb1240a62caae20a5075e436344. 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/QZ7R42353767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed6968b02f5cdf54048e7ca8316970ce11edce9ba8b47a4a4cbb8760a71047e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZ7R42354348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062dcc557fc8dc894c6b7d874b3085ea45bf248d75c530675320136c257e4ef0. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZ7R42354350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c329090724eb9844a092330f96d160a5b5b0f38dfdb1572803d7efffb1fcfe1. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/QZ7R42354352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf4eb2a4a32f1fb11f1955c069d46d8fba549cbe1377972c6826da438c1bfe7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZ7R42354353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8c21e8bf456672ae9174029e94916452e12fcd57ac86aa15b0166abb7e2b74. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZ7R42556521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaeed70eaeaf2e71a19f3c259cc956baa96d72e352859632e5f8ee95a9cb8d3c. 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/QZ7R42556534.