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 0x48a2106c2244fa86f36fa0a21cfd8824e917bdc9948173b7601f2be462db8a98. 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/153b7ebe-95fb-45eb-a3fe-f4e749919aa6.json and https://artists.proofprofile.net/proofs/artist/153b7ebe-95fb-45eb-a3fe-f4e749919aa6.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 0xe565020457c3f7662d166bba724857bda5090e026aac35a3a8f75b82f8cb9288. 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/LTC691900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527df329921befb5481f73b74c8264cbecf3587d31e7017792d88016cf57652e. 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/LTC691900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e479a074108cc5bb55a2e681de67f977573e990c001b9f9ce8a63b2138400e. 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/LTC691900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8479aadd775fe42f0bfe53c1ffaf51b671f1f6a56602a3476566cc70c7019a40. 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/LTC691900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5777beb9b942d6c94c5c136160bd4e93c25557c50bf6604c522227a404f0f32e. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:50:19Z), 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/LTC692000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3651b6560a692dbc5fff55157f1a233cc8e36ddce8a23d3f27ec9e8b91d4ed53. 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/LTC692000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad762e146de070ef1b858a4bbb1f74b07be2efe5af1be0c5b00e9c03107cb029. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/LTC692100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2637a8748b7bf796d6a74a1bce0c0b433b8621a1b7970f962fd1d52f1148a1ba. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/LTC692100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f8968933890456a0352ad7902bff700c16e79a33f0a204e5fc597a7e9ee353. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:09:34Z), 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/LTC692100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb219e9d1c15ba7d783b4d85b50005833e8c63178a53e174f1d9df9e228b104c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/LTC692100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6749682ef83a291824c0e8ee6b50bff71e5072a405080bad5a121ef21213d133. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/LTC692100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8555098b0424568da47a838ad41a74daadb29c51d2c3191d34eafae91342d55c. 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/LTC692100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c7271cc3ee2b88884d614c212af55e30341eff06b1341f5e9128daa35c2866. 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/LTC692100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9d680d77ba409249130d1ef00372a4d6b881aed3cd5c9c0efa2ca1adf6bd99. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/LTC692100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5b5810f5a996ee973bd13c08fa384a7a0f8f77109c13b81e5bc35950c8c855. 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/LTC692200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88862cbbf8939cfc6c9609b510b32b951cd6cb54bd7f30e209d80e693efe21a9. 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/LTC692200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e7ff723505d63418a419fdc0d86c38e3f9c619d8b2bfea49f8f9529cf06f7c. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/LTC692200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88862cbbf8939cfc6c9609b510b32b951cd6cb54bd7f30e209d80e693efe21a9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/LTC692200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92192a32b148bbd307c1849f612f1bab3b39e6025ba3b3625310a79cb6d9ff9c. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/LTC692200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dd411e19795a36b65964809a7f9bd0467f9fb24dc935a45e22a3ce52e95b41. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/LTL382300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d4c2ad6c949c1a3574c27b7069c780c569d8d009ac734387df7032a870ed52. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/LTL382300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dbd56051948b2c5aa12512ff1b47cc614c5b6f76be0f0892e4593c73eb7d6d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:04:57Z), 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/LTL382300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4546bd505c0a73604a4744cc8fadb51aae40ba6b7f9d4df0825e6828a06562. 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/LTL382300003.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc828ae50114165847308c2cdf7b8af8f7220d9ded69aeca4a7c5391bf184dcf1. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:50:19Z), 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/LTL382300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540c5a20f0804f80d9cee69ec24550b670ee2079923b21595c35d10eca657432. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/LTL382300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aabb78fd6f065ed9ddcaed8a1f1f6bc28920c088e5f8bb983183727bfb42411. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:34:36Z), 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/LTL382300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005a3b7777ffee975b2d5a2ecdd10e384e7712f85e94c587ae5d1a8075a5bd05. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/LTL382300011.