1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x18f2c98c49c48607be51c4035982d05e76f92f86e4d092dff5a225fc8fb8c794. 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/633d9c93-eee3-46a0-9ca1-3f3ad436f0c1.json and https://artists.proofprofile.net/proofs/artist/633d9c93-eee3-46a0-9ca1-3f3ad436f0c1.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 → block OTSBitcoinBlock must exist at that height 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 0xe753f46913acde2f81b5cd264d72025c29b3d641b1bc812a982b949e55eeeb6d. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCJPI1827944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe753f46913acde2f81b5cd264d72025c29b3d641b1bc812a982b949e55eeeb6d. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/TCJPI1827944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf54c91e26abab197f04dbc4c01e159d049f0f9434a9231e2c4c3d16eb44dba. 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/TCJPK2044551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091194bf68bd39b49f13ff51fcf29dab82f764ebdf8eb047ee60c8077ab4f16c. 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/TCJPO2181371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa67b19d0749e932af34c2388d2a8f320e5a0e7a472e7f43c2e39d11fe24ddb. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCJPQ2177738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f3f6f351babd5cbe34e13c22b846c289980cedd013d386a4fa760847f60770. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCJPW2384022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b477d13047feef69cb4a4cedcb2e95ba90b4f26cee590b4d4f3772310f8c152. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCJPF2548969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286d55c9b24761d5ad44760e28d00a2e0f2cc3a9d8a86485dd83fe8e71052065. 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/JPJ902205500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d34cb9995f5d6eb27552cedbcad9845f77801b2022da58d247d2cf0fa1ad32d. 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/TCJPI1994542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286d55c9b24761d5ad44760e28d00a2e0f2cc3a9d8a86485dd83fe8e71052065. 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/JPJ902205500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1705f03e47b14a5fd97324323493893d88f1bbe558ae13a9726d7c82687d38c6. 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/JP92N2444498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c7b74301cbb76f4fa9529c743d22391c13e6f28126fc86b0107336c5d347e8. 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/TCJPI1831805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987283560a9898acb8aa8b197c0dd13b57a41c5a8c1058b226059dfde6ce2033. 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/TCJPI1831807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7e879780c5e8f19288bfc70c0518895acabc7c80dd0c04eb679027aa8c6aea. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCJPI1832183.
Cool running (feat. Tohji, gummyboy & SEEDA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f44fac33b727135bab9e387b1082d837bdf15509c00ced770bb34fbbcbb48c. 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/TCJPI1832185.