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 0x8089c22fc49e0e008b23cdbfff39d8a0f45237b0897ba85151b2a6a7e975c2a7. 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/4e14d7a8-aefe-41ac-b297-231d8c612838.json and https://artists.proofprofile.net/proofs/artist/4e14d7a8-aefe-41ac-b297-231d8c612838.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 0xdfc19b104b66b054990baae309c4cc4f6cd3d16e90fd8090ec1848aee2f2d383. 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/AUKDT2300568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957bb0d3bb24f5a989880ba9274409c3ecde88ca5b99ca592ac2b9202d054638. 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/AUKDT2300590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692f79a6c753d2f69125ce1a1fcbdd5ef9e6fafa36372a6b6f88891fd6ca7633. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/AUKDT2300665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fe40885c3c25f929c88176e2af0b0a816cd715734fdb439a5579dc9bde9c2a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKZGC2308304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef739e39a2e0a6541b836e5c656e21c297db257331cce050ebb1095297b4c269. 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/AUKDT2300682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03732d40a251ddc0cbae978f239440fe5e12d24507f2aede10ce03dba55263a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/AUKDT2300712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669fe1e97073e5cb38f4361e756cac4474eca012a8793ee9f1e7867e80d2ce9c. 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/AUKDT2300799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e6fb8cf3c072a49dde1e2b566a4c814a1a7fd797672ae2024543c6ffa5f10f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AUKDT2300835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c93fda154cf4aef7b375c97db725ffac56466f552566770a0e9e2c7ee79dd9. 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/AUKDT2300849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14293ddd5c8ec2af9d4b30ea24f1b150388f3911958ef3dbd7b76692fc044241. 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/AUKDT2300891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53008d812e972a5e2a1f7a467d16226f09e0585f49804d3b93f0f87401ee6c07. 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/AUKDT2300937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea04529e8aa65c5618c9e8c149931e7006a4d2ee25adab021e58b5f8bf03f093. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUKDT2300973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7447ef24017324a50e2e8ed3c8cca221dee320b26f8a2024f34cd10c1366666a. 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/AUKDT2300987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfed4d0ab7ea9bf696c94922d955b331af7f2520a2524c30de411210a90c750e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/AUKDT2400598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6f46dcac3b1a44d51d8511ebeb1ecea2516a24f2cc525fbd96f199e87bcea2. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/AUKDT2400599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2856e6b490bbf868d731c7257614a34fd225582404798170afd59b825e329cc5. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/AUKDT2400695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bc03c0665280cefa0a1130b195a15471e141d1b45d6a7947ff36cfbdf9ac52. 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/AUKDT2400830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ba741ed91e5c722ab7c6f068429e4ea5ef7afa23fbefb6c8c8d80606b9a36b. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/AUKDT2400906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926dc0c0de0401f69317ea14fbaf7bea649dd28e4dba751f9695882d1cc4c145. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AUKDT2401182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28f97c5009b421f2ac2713cde44ed030145f043bd30ab095f3216b2e6aad964. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/AUKDT2401210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd5d36077c70338393c87471f7d4e2ee96ca701d0dc44fe31a93aaa8db53670. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:59:23Z), 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/AUKDT2401288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee757555d67dcc1b7a1e7f34748f8aae8340a5d27902fa93156f0da3448bcc1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUKDT2401319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7321279755256202ad348ced09a12a25a5f4fd83384c61b7f3ac2e075bda8c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AUKDT2401491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9e0b94278159b8ad6e9b0668fd6d093398ea5ff5944909ec3b32310ce7c02c. 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/AUKDT2300564.