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 0xa3c0d661e43eb2f614656b0d4b949fc54ab21eb67075af0a267b48592c9ca1ee. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3fef7ec-e154-4664-97b1-7357a04a2fc5.json and https://artists.proofprofile.net/proofs/artist/f3fef7ec-e154-4664-97b1-7357a04a2fc5.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 0x5927c2f898bc325167ca21f832c24adb0774d959738e18242a468e7c4e2f0bf6. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:24:10Z), 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/QZK6M2409129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f889a51fa4cd16981e8d45f7d08db36af92f43c0397e8bb300a9e32d775fbf8. 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/QZK6M2407523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9314904a3b48609a87f14f689588cd0963c2731d278ba92713673cd3d1f7c332. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:50:25Z), 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/QZK6J2487225.
The Real San Andreas (Grand Theft Auto Fan Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f7f744dc1e6224de0f7c1a5cdc70484918a616488002f6247216cc5d0660b7. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:44:43Z), 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/QZPLR2470900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd121fa41a5015b976a2a11db157d9ccf38f0469f6212e37033f53128495921de. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTB92485433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9c283fdb0739216edbd13bc8cbc4d228a095e498a76a304c6e8f2a6de1bdb0. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZZ762498975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85aafcaad7e5546c132b2db4730b1fe4470e88ffa19cb2f9020acd00a53b8f73. 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/QZZ762498977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4286c3de58b96bfdebd479eaa60eec38436fcb8d27b300d55cdb709688b7c1. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZZ762498974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ead16ae21e6c8ef36b9552bc44380136dfeae9a7b4e7ab3d4d09df8e85ed369. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:02:12Z), 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/QT3F42454106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4948800dcbd0dc416c5bc61c2b1311bb6d75a5f07afc71401f36eb835ecc87. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QT3F42454109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764a4a92f7050db8865a2e6b0331e68038b9f99eda3e87c6b8c5e247b38af9be. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QT3F42454110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e5120cfe9f9c98d6b5c22e873fd7b01ffc0e2c2ec297721ec2bbb511933eec. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:13:28Z), 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/QZMEQ2514509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa9c9e52d234bdcf56d3f4be76c99927b2f3dca1f4703b21f38a0c18011b580. 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/QZMEQ2514511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d7408d93a69eadb5bf79ec6955dada486b05778c6b0deeda5800cd08d9d0b2. 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/QZMEQ2514517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7bb173e0117afbde7c77d1c62ddb411ab1b50d4ba915a92d8d63ee8074cc32. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QT3F52545634.