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 0xab93645e662434f43ef0f329a75e99adcd98a0d3ded34b2895e4131e55d32e7e. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afdd4474-8b8f-4ef3-98ff-fd66b7f9967c.json and https://artists.proofprofile.net/proofs/artist/afdd4474-8b8f-4ef3-98ff-fd66b7f9967c.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 0xe28399e2659dcf663aadbd0965cb950a35d0703f2ea60843ff01b380ae71e4ef. 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/QZMEM2034065.
Zombiepura (Original Motion Picture Soundtrack)
The Love Machine (Original Film Soundtrack)
AJOOMMA 花路阿朱媽 (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fc9b5ffcac5500e6046641b27fb63ebd30cd9cabbbc20cd23ad1767c1a8fe9. 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/DEMS42102530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08cd5f9c6f24d89712b737afa7072a0285397157fb3bfad39ddc50d6b7149ec. 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/DEMS42102532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc503152835b5cb27f9dc57938721fded4dc2e432fcade1d802b7ce71be71cd. 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/DEMS42102534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3a5a8dd14d8b22306a23a93bb46cf45ac47704d056056b4885e9f160264465. 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/DEMS42102535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f12070a03fa5e18a2fe88bf57a6ca67d9770f07523036d02c5f5aa2419e8f56. 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/DEMS42102538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeafa17709d3226b2b70a64cab067031cbdc8835fac7c7fa5a93efdeef506202. 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/DEMS42102540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6960ec4f3b9a6ad6f770b15cdee83144a32942c1134989423f0884b5bb2658d0. 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/DEMS42102541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf357cb311dedc1bc7cbc222f7b1deefb01877773aa62b57fc181dcbac804362. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEMS42102531.
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 0x2c0fe53c7c9a002e9ff31009032cb2598305a6846dd17a163518b37a7acc5da3. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEMS42102533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0c51bf1b112e115c643b7cb853371d48ca70c033da9fe18975e4e9c4d717e7. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/DEMS42102537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c6aa497e1bc28c1c4193dae8ebf39416c5e9aa97c440a1150a90ea8df4a7c4. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEMS42102539.
Andre & His Olive Tree (Original Film Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8298cb3f549105853ac7b297332664aefc146e801855d8e011a2e947aea1b92b. 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/QZK6N2003352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5a64a7ed4c2211e5e6f6dd469e629c8ca14451e0f3045409940e9ebc3c71d6. 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/QZK6N2003354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f045aa4cbbd7feb6950f47dcbb5fb26ffa4e81b91d4290ed1bc6afcc1c53926. 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/QZK6N2003357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf745cc74a61025562b53c0b4c47511aaeda8459dcc8208a9b261b6bf77ccf9bc. 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/QZK6N2003364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f059c98d20cf67e3087e3e5819154538b8c244de12b70b2dcdd8a68d4d6b690. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZK6N2003350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ed93f915ab9c40dc190436163f275de1b5d376ce8cb073320fe715f39dbcf8. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZK6N2003351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816b70aafe2d7775e100db6ea8a72e1f4625e13e28ecfb4c57dff8abbcfff80a. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/QZK6N2003353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b7157cf0de0f5735289a9bcaccd0a61925151a4c75f39444e71e7765ac7b93. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QZK6N2003355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544d797652aca30619c7027565e6111702226b258a8d5cf8e0fa4b3cbc4081e4. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZK6N2003356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3c59ce53d43fbd675d4787b06948f85a0e7696e4996ce8591a8e9d391da330. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZK6N2003358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd006b9a902ea2bc50ae67890f05a546c292d7f0cdcb23f8a8ea2be49715fc7f. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QZK6N2003359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66227010c4e113809cbbf6e21bfaeca403d0ef8708e0c69806cec72ad480e5c. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZK6N2003360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a6a1a3f0fece764488d2ce93fe1bfaf359131c52b492373369260ee4ccbf77. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZK6N2003361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b9735b321c3d289e60a0a8df1d3ed95f50a4596be92337e0986be9a5f84f66. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/QZK6N2003362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0fbffa00aa95cbe8f6d4a67a5e95e960e59b8296a786611bb2440d87fd4b17. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/QZK6N2003363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb540b069656b7e274aacb8e5492930ccade4f826b010800231c920887bbead5e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZK6N2003365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0b0c86797d9fed1f1855cdb0526fe611033d3d0a57434a317f72460fe3e7a1. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZK6N2003366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d4c3e5e5a7c9a481849179e8fe6eaaf8394de852241999036dc8c5a80765fe. 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/QZK6H2061269.