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 0x9a9a9c530f43e08c2b55d8abd302396a631b253d041e51dc04cc1ab7f000480d. 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/fee6f635-bb10-433f-b817-cae2f9cdde0b.json and https://artists.proofprofile.net/proofs/artist/fee6f635-bb10-433f-b817-cae2f9cdde0b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Star Wars: Tales of the Empire (Original Soundtrack)
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 0xdb2c587f77179b25b9d0e869e645f955c6fb3bc6eb7cdc5b5748a5836e69d9a3. 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/USWD12431051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989662586e52932c2c3907c74638cf2e322e6b6ed7bef21c23d457b33c83d8dd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USWD12431052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca326403e771dc1ced6a4c94262a216f6c238192da5d2bb6043cc80025df856. 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/USWD12431053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705ea6d0bb662d4154c1a56883ffbf1c85f1f24a1fbb68910d9cc25246838181. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USWD12431054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18577e68a6a73abc094089a2f96da9861c0b93b26c2487419053157e80a71c50. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USWD12431055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e444663256f1072492d342161924ce721a9d16bea37f354cf779ec50c75d34. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USWD12431056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7adb297629445a0dd25087fcd97ff1e5a74729cca12db24d19eb5cd0b62e0b8. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USWD12431057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51a23cbda4e123c1f6d0d0164c0105d3fa21899eee98f78c8b19851a11c34df. 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/USWD12431058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5219e782369beb5bd26ec9de53090719ecd1713c3da1f12fb527f83be42ac646. 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/USWD12431059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b2dd1d3c6000f1a43af02bb3c306a17eba752692bbd6c87ad00cb598f68dbe. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USWD12431060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe043079fd7a164e2b9c647f0f20dfe560b3e2691a56f697bafeb6e2824920e1e. 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/USWD12431061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a1078d8e3ada02f16c7534417d0f9e5f0e568964769f780a27aec94b436ecc. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/USWD12431062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9ea8544fc5e41d489d6028ba085831f7d9c4a94dc7081050716ef58c2f449a. 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/USWD12431063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666e2c53884e9269321ec39bcb2e72b347944450e9d3127f323af29ff0257b75. 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/USWD12431064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bf41db8458ba73d3a4663afa8e65ba26c68bd03c797f9416ac012dc478d24d. 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/USWD12431065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11faaaf30a305101429333292ac45b685c393f30326237fcd49131cbfe1d55b. 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/USWD12431066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c40dd0e16657782d033d4596ef241952dbee6f19e259f9aa4fe0b9b6b2fefec. 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/USWD12431067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5a555346e6a81a46d92b417b04408fec7ba14ff5ff87d523ed353a28d36e71. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USWD12431068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2ea37fc237683561d71a74ea16406e44ff10a8e2b5041e230ff14ac99753da. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USWD12431069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ad0f141c4ee5ffd4c5363128df3f318fc618c32535b614bfcb27f31a99383b. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USWD12431070.