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 0x5febf2583e2aae942f077d8ce4d70a1ca53d7d6bb361f28cde4c8808b4297000. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ddf9ee0-a461-4ea5-9934-914310d76447.json and https://artists.proofprofile.net/proofs/artist/1ddf9ee0-a461-4ea5-9934-914310d76447.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 0xe5713b363bb7a2683b73594f77a6199539e0ee97e9a1d1e72a54e2a2d80201f7. 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/QZHZ31982187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9852ab306ad50e90ead14dfdfb96115c852efe24ccb8ab245d2d236cce4d8d. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:41Z), 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/QZHZ41998494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049dd75daa8270b8b68bcaed770a2d693a1d8faa31e507f096432cf7a4df496b. 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/QZHZ41998497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186bce8739b57e582dc725716eaf46a2c8e303e319c398eeabdf476cf247fca4. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZNJW2068392.
Intro / O Mundo Polêmico das Artes Marciais
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706cbc1ed30edfccd52f79e0b6bdc094a1c47e1ca595bc275807e9ed942c1003. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BCL662400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2303727b132ac212bf3cfd0d6eee24bcd0ab6a002b1f5963760c04cd0f009899. 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/BCL662400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef811bc2b2f9c6683c5b3d36f2dd6a54733a54b020fd1686fc87091d2bcd07a7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BCL662400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e924542890e191b73974dc72e65c8b3e676001d44b52e14cf13b2c391771a66. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BCL662400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f37a4dfd6cb5b6b014799c39b513e2ab9005b9e22d37d094c61275dd5175598. 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/BCL662400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d9d7df71efdcc0d64ad45ffc825bcf78dd8e40db3372be9208af69e83a8186. 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/BCL662400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bd0c71b0e8728e1ccd52bbf54d98ba1be540ce62f808cbb3961002b387208c. 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/BCL662400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d9d7df71efdcc0d64ad45ffc825bcf78dd8e40db3372be9208af69e83a8186. 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/BCL662400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1cfda6fa8f35dd52f13fc8062d236b8aa59ca053180711850f5176351a66eb. 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/BCL662400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fa802b30b3930d33d08c2330624fc5949d60ccfe2905585e8944bc40951d78. 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/BCL662400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97aba3871e54f98dde3d498c2d5f2b6b34428c96be600cb30c11d41d057bb72. 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/BCL662400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e42c6776c5cf61d0b289151dc6e963612c4a76e4a28f12a4ad07eca92cc0be. 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/BCL662400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d8d6f2cf3f6b7a375d05c88454a1456dca239fca7db2aa69af95c09619fe18. 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/BCL662400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd031552701cd338dbe99edec5a71f0daa3efdb8fcffa7596648b13de6a3be19a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCL662400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddd4c3d76423feb7cc1bad6e7e88e5ab5bb4e605d9b196653f3df6c8d622c7b. 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/BCL662500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe833f19f90a0efb13d7e3c9c51b8eb24e4baeab5643bb9eb2796b8958fe203d0. 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/BCL662500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bb696dc0be898b45af376ac59741e16871ed1d31ab45eec6cead4251080a6c. 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/BCL662500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddd4c3d76423feb7cc1bad6e7e88e5ab5bb4e605d9b196653f3df6c8d622c7b. 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/BCL662500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a26ce2d5b5ad37029776be076dce5583e064e726b167776ea90c8b3ab723ad. 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/BCL662500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cbbd2722f9f29cb6828e44c32203a776618753503fdc5a730dbffb047a6079. 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/BCL662500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13307436cd14deeb74a11bc2a5667970636f4d1b5bfafb843d7d70049541f86f. 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/BCL662500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b48035cc0c76130f638ce7e50d298b4968c5d832af37b62dc30b662342dc3b8. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/BCL662400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ead8cf618d018bd31031f9d14abc5283e7fd096f8c09dfe88aec5e95cb7999. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BCL662400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4b52e8ad6c0d53b0aa0b803342f7a0f48dffc46f4740823020d4db56cbe9d8. 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/BX2I82500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f1de139c8f5432f2cf3a53046a3697da499a78a0fe7923be27a748f23cbcbf. 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/BCL662500017.