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 0x71660ece90610328c64c9a233d3add027b680dde42c8e43a1b02837ce8f2755f. 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/b4242a68-5e4f-426f-adb6-4ee83cb4ff96.json and https://artists.proofprofile.net/proofs/artist/b4242a68-5e4f-426f-adb6-4ee83cb4ff96.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 0x0be1b2600fdf599d47cb915e8630ca0ef5bc6edb6ac93dccec4ab95c2fbb80a7. 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/GBAJE7300574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb322a71366e7879d43a6875491e1477958bac36ffc419c08d2607679f62652a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GBAJE0609595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d8759922083731faef3593472ccbb2babcd3e4c703c428245594df3a8c3497. 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/GBAJE7300575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ffd50f9c9703f0eb345abdf4b6b9b7ccbac7b598a2f2097cf37d366ae1d209. 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/GBAJE7300578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648469962d3fe0167d800b58d104c534100044038f27d10dd2ade43f143b365a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GBAJE0505325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd112fe5da5ea6a6aa4572a528893d0e4a62b0ace6c9c0502c9c4861e393a4fd1. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/GBAJE7300580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe81dcc1eab4996f7de0af65c3b9d3606cf8811e8c617c831ee10a48fefa0951. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/GBAJE7400589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b61803966456e850ac02bbb8045e7776b714d8cb7aa29ecd16629c24c2d304. 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/GBAJE7400588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5628c7be68f61d0aa0b64008b1f58ef7a7008560f3244b5042729a4b887230. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBAJE7400584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f6c1b550d4dc6f8d544a50818ae86203b2aaf6105dfb5f8240b7337869f2dc. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/GBUM71007874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabfc0b86e10867d1b2550cf0e859836652b93206a0d209306260066157fdf44. 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/GBUM71007875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5c0e16317f08a7a98968688f4696b8ab32f3fa235d091082b98c57f518d84f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBAJE7500559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cc5c9876761d2e707a34c5a52fb4cc1c1a2b22ad376344fd263580f32cacdc. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/GBAJE7500556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810a743aa5ded9be9d0bb9e1f5e648924017feaaf5153f24ae98ee68856ce6c6. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GBAJE7500560.
Get Out Of My Father's Car! (Japan Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b61803966456e850ac02bbb8045e7776b714d8cb7aa29ecd16629c24c2d304. 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/GBAJE7400588.