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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f681817ef58903595065a6790712e02dfb97a21d40573974e1f8c51cc36d61b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3efab874-a0d7-458f-9310-1ad4380c3cdb.json and https://artists.proofprofile.net/proofs/artist/3efab874-a0d7-458f-9310-1ad4380c3cdb.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd552e17ddffaa60cf135515b2188c30362306dc3697d9d400330bd493d445a0b. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZDA61875108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c1dd70ee6fb84e348d596f071c2dddd545f9897d1186e9cdfe91c4401e4b3d. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/QZDA61875110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e07eae324df207f65dc49671e4b81d5a7a26fdf5f98fb9089ceb716ce2d71de. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:50:16Z), 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/QZDA61875111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d057852730213ead852e9dea361c589d6639f89090c217805fc9c772e7c60f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZDA61875113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cf7b6dc100a4fce4b223440b0cc7b4b835de0e46bf7e3eafc28982c2c2d540. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZDA61875114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd724142cfeb173753c6217d243c16a4f84c81004c04a30d81f04dff6a3931d1a. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZDA61875115.
Rise of the Giant (Dead Cells Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cb12350515afb733c1b26f4dbb659daae79a2300276217182329155ae9955f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZDA41959362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18069bc9886086972708989433c6705db1b52fac9c5df8737e1f2ad9992d9fdf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDA41959363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ce28ca291709aaec07fc52119e0e7adcbe031a5669667852c3107a37528d7c. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZDA41938641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e134eb7886f9f1324ab613e0df1c0f022dad1bbdf78d572e481c1b953b26ad. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZFZ22055478.
The Bad Seeds (Dead Cells Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3e92af8dc29b3a3656903fde90baa193e073bb796c0bcb2e2f5eb1dcca8766. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFZ42064824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b72effeeae8859a468b459923f00b533534b1140434301bdbacb7f8fc35d9d6. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:59:29Z), 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/QZFZ42064825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9e56ebecbc931994b1d2a500b8aa3d12a394e874b5ee3614188132c4c277be. 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/QZFZ42064826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7c9c9676d17d01f2f806837f847f8707fb9fa23f430601dd0430435dcaf309. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZFZ42064827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe7d9427bfbff48136bc4b7dc98fbf2cc657b83c6b362712325894c8cfe2a53. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFZ42064828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4ea854e6b1cbade34357a854504257e72d4a5d40d5b24c05ec4ac6c5cbad2e. 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/QZFZ42064829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962842b0cd877accdc5058c2e8d09b283d43eaadf1ecc6624a15eb6cd715c448. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZFZ22133456.
Dead Cells Fatal Falls (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3c60471147f8506c6fc5c0dafa776b1c11fb01cdd0885716a351e8a03c504a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFZ22176941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00519ee98e957fae2ee85c89443e8a2d5203ee67a71c3dfb920fb016906f6c9b. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:24:36Z), 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/QZFZ22176943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa9b02e9f606586d11c984fa54076b3efee0353d21f7abc17fc44039092d88f. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZFZ22176944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e955b18c4b4d9780444a193f312552be0a2c98cdf4cad4886724d0b15a18ba4. 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/QZFZ22176948.
The Queen And The Sea (Dead Cells Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191c306868b139f93e6c02a6d8abda42ce9a47891e0863ed64db2ea30e32dbdd. 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/QZRP52133744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff573c844f278825a380eab324dd174ae3bd96a72d25ef745fe66b6bccd19794. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:49:45Z), 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/QZRP52131854.
Heist The Bank (Dead Cells Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe833069a1162774a94b2ecc6c6c146fae847e27902129166fb7b1060599877fe. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:00:44Z), 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/QZES92252223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809b4abbc51317277f1e57443ba8fe0bff13bd15f4d67c6ba4538d76003f6ae5. 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/QZES92252224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a33d73795c9abc7a6a55130e3968c6b79bb79cb182a9e86aa514ddf3a7ffa65. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZES92252226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fade3f43ec8d3b698343f7963ef575452e8c7782019774c80d230f49738cc07. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZES92252228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256b8b0c49186b5fe056378e3080a7556e45cd36ee7b1ec68d3f70db090442ae. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZNWR2360181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ad70b7b9241f27697ee0967b3c001cecedaabdc5c41b18904c3d0a299d9121. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/QZNWR2360182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85f9805a002632568bd86e60283ec65a4b36617d5792ac77366e2ee66ff9f90. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZNWR2360185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571f2148669de46daf3808e2c39ac3e776f106cee5be342a5887867bdeec10ee. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWR2360189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7da0ceca2116db8911fbcf4653185925cc270f6285593d9b30a92d5fa7ed19. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:10:08Z), 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/QZNWR2360192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0134296d9d9abe0832f33db5ebabf21d31a598f6f29042d63b4558c91a422244. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZNWR2360193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5911a8248625276b2c58267e15513fdf49e524d8ccf563b82930ce8fa74f336a. 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/QZNWR2360194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b37249d9ca0790e72c2c6ce6dd98e1f3d0c1b70cfc8802d89bb5b777031b83. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWR2360195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777eadd9558355c8bc6a8ca3093635375a589ee6f1c6e1cb811e9c56e6a5b863. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWR2360196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6deb5391153b250e5f7dc19a9fd5a2ca130c1f5624cad1034e48039716bd53. 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/QZNWR2360197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1e25654befbd88e3f8704a42d6d26a0cd39be0323e670c2184efa6bcb3b1e9. 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/QZNWR2360198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d124787e50e686a01e44d168e6c9862cf01d9964d0fd94e329b02bd4fe1475. 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/QZNWR2360199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb659ce321e0b7ae65498c4f79081fea339df986a3948dc3e505af1ca983fe219. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWR2360205.