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 0x9621d34c92c7433a4cfcc77c478c371930c4960bd477eb0d8c41cc8e288a8723. 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/492e5976-cca1-4d26-81fa-fc390f83c8bf.json and https://artists.proofprofile.net/proofs/artist/492e5976-cca1-4d26-81fa-fc390f83c8bf.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 0x419bdd37c6ec95308008eaff64e728749848a3e2a35adad124931770979080c2. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/DGA092354908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bc99e69b908007d4ac26efe9a4824594d18e6749311992dd31f02dc21fe00b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA092381414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ff3edcee541041d803f450e4505177a27d3766859ab957a2a2ebded7eceacd. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/DGA0Q2372797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e57fe09d61d80a3032af1b384742f2e1f4fefdc4480fa1ef49fb0ea6123705. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX282430825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8c3f18f7c03706072a7f46126526c596784ebccf3cd08d76a4c7135f6cad0f. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:21Z), 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/FRX282455511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8417cef3dca62259147d874bbb5a2f9496d333fbdf8e7a045bca7ec29f66b65. 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/DGA062425114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e4c31be5906cf347253e06a763300ddfee7786ed32409c83cc26c142170d32. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/DGA0L2411686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bf869b7e9dc184fb88b960d841e26f1d2b0a95804b4743761bb2b88db14cad. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/DGA0Q2407382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462c89dfffcbe5a7cfd0a2b6f59d24c3bb36114f086fb4d0e8c2f35912615f8a. 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/DGA0R2417873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32df4f2dfef119ade94611fee8e3d273595c885aeb8bd397f4c85f56249486c0. 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/FR10S2518875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518b10924631e8a9c1be1bf32a0c83f8c8771883597fa74d0b4cb60bdc84acba. 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/FR10S2528363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c429b289631c3eb025b5fd488486e4f878e34de3cd775e6163cfb0ced79837f. 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/FR10S2552835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa147239cb4374f319e1ea4d3ab87cc17fbdf9951a812b6e1b16dc072ec3517. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/FR10S2581239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbfcdc6f8c444491a4dddb1e96bde9dd5186beb14bc100e5098967f051dff3b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR2X42504918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b98c238c2c50281bc6ca4512d5b95380d109d59ff9bb7b561bb79f35c1ecb46. 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/FR59R2525033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd964ebb83ef00988b75328a30f4c7dcac7ef5b46c4e66700b43232487bf2c5e3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR59R2567717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2e8b9012f9bc0ca985d8fdcc70812767e6a1fca87e1c3bc4f803704590eb52. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/FR59R2570890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dd84b0cf60303b2e7fb6179a99378e2f8274d02d524d8ec4a6cb9295f2725d. 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/FR59R2586860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108a982a127edb22e20094094bc4fda28f708b277167878d8d3a6735734e40f4. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FRX202539558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4554325212e6ca3b4fcc60d2557d4864bcb7b9d894abc7ecea6f29c586389e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX202569505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24748a0b4fc37ee15d5ba5e9a36eb25ba04c1317e90f2ca561e25e2a3e9141e1. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:57:04Z), 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/FRX282502598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22baa400a244426d02a5914601a517b57133e90400c98cb89d7a9a75eed22a42. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FRX452559076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0424441b331e68a4fa2981440331298af4ba450f459e54ac4568ed531aa21264. 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/DGA052523216.