thumb|270x270px|Map of Pangaea around 250 million years ago, at the beginning of the Triassic Pangaea or Pangea ( ) was a supercontinent that existed during the late Paleozoic and early Mesozoic eras.
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 0x7054965d314e8ce8e5cb709214e8909faeb44ec4228cfe4d4703dd144e5d0dc5. 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/af07d613-a3cd-4e0e-9c1d-0f2b0ecd373d.json and https://artists.proofprofile.net/proofs/artist/af07d613-a3cd-4e0e-9c1d-0f2b0ecd373d.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 0x3361606f08cc5255911f9ab3b7ae013f1deb6b9fc8a6ef035075b9da71e3c4ea. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBUMC2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66994ed607af325b621722c2ba30144b37cf2bf100ad000639053072508a447a. 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/GBUMC2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52cc8b4fe8aeb50541c36eaae4c96f165ac28a6ffa1e17ef25a4d81fbe42c8e. 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/GBUMC2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41aa0f2327c7b6b36043ad4c2cc592f44ab1eb13c8757fc159d9f3e763e9bca7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBUMC2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc53bd3538ff50f001ad0516a8634a404dc0437a6ce7778955afd399a2ec4fd1. 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/GBUMC2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4649d53d5b7386fa716d76dd165de22c7c15580e6b5c7395a0fe29edd311578. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBUMC2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da463b7c745845aac91fdb67123df59f07324bcfc4b3ae404c9051198b1b1dc. 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/GBUMC2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6dab8ea77e5e161e13dc70ebe68da5cda84c338dd1a7b3c1c677e4fff23585. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUMC1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0432cc244c12dd66758087e26d13b4a867fb39e393ab48186465a1482eb97d25. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBUMC1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d8a238f5178efed8b8bc94d586bb5a8d73c5d91893c274295fd90336d8c7b8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUMC1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff60c4fccfe2645d767b252127b658b575bad9e901d0ea8a55148e207ef7134. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUMC1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e1fe3578c0c2186adfdc2fbb8f67a39f192429a0aabbc41aca9d67039cb62a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBUMC1600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad4a6c839f85c4434a1510da906be10d54c8847d83b9bcf7c092c9af90840a0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUMC1200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75099d740dc01c1e2620b0cef1bfca62dc273b3c1e785a8438458985756b0ea7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBUMC1200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da463b7c745845aac91fdb67123df59f07324bcfc4b3ae404c9051198b1b1dc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:57:49Z), 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/GBUMC2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc53bd3538ff50f001ad0516a8634a404dc0437a6ce7778955afd399a2ec4fd1. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/GBUMC2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66994ed607af325b621722c2ba30144b37cf2bf100ad000639053072508a447a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBUMC2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3361606f08cc5255911f9ab3b7ae013f1deb6b9fc8a6ef035075b9da71e3c4ea. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBUMC2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d01e3ee61381582a4f4771cf5737e0ec0b9dc9567b7a529c39d48d7e9b3de6c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBUMC2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daf5eb3a6d0e139c7a9ad09c664b97ab31ecc05789c5551e784b95d8cd724df. 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/GBUMC2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd4fff66ddcb1fef079e4cf7c78fc12ea452d423d9478f84dd4ccacf656534f. 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/GBUMC2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d01e3ee61381582a4f4771cf5737e0ec0b9dc9567b7a529c39d48d7e9b3de6c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBUMC2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbc5ea8bd5a7662f3b09b03697c42ef5f751b5dd0edc22744bf34f531a2fa53. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBUMC2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f42c875cbb41febe46cc4bd9e8cd2238d6fdd6ea0ef047e9e5d1a9d3453e19e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBUMC2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8233d411fb05f5330793cc9608ac583b3a8072b08e02fc44cc245aea0eaf1742. 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/GBUMC1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ffd549bef2e882b6b0c523781c285c366b00b8d90ce97cf5e629579be41b4b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/UK2PA1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aca0da8990739b4520baca411b79733b8e4f13f524790fac8046ed3a6cde2a4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UK2PA1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84af5d2754433f9a34b2e7c98b246ed528268679e9a3e185aa743ecaa51ba85. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UK2PA1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ace3b8b78df1e28909335833a21d90f075e3a7346834772d7b8632c201bb973. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UK2PA1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323d2b927c53e250c2d7172ff2b336db3422634a8c9397fa048eeca5038739da. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBYYA0900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1987f5bbaf87f4cd310768f5469ad04a18ab4916e4081b0de43023513ed7618b. 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/GBYYA0900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49744378f6b6754817a9645817f813e37a7408088791cbc01cb548629daa5390. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUMC1000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492a8418185d26a407ffb098a785a966cbe976c87c5451fd625e5646d21a337d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBUMC0900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e2c5f18762b69931f704f3c77e29fe553e7aab1d8e0732a10d6d48759fcfb8. 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/GBUMC0900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13db0898575407d2af58fd00e27713dbc5f34d57c5b6d4e70bec3866b37507b0. 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/UK2PA0900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35443e7b13d3876893876aef0605b3b63fd825467289a10b7e4aa04527c4b946. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBUMC0700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b22bc963cb01b2fa449be169e688ab8b4a77ab57e54db91f744422b72ce590. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBUMC0700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f85cdb206d16a082a56ac4e2721bb7df0a001d40e2aa924f3a4b9a66f2ecf3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUMC0700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8be077aec1acd08cc2ecdcd69cc3f39ef162f670206e60019915ead2e70e8b. 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/GBCEL1300598.