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 0x24d5b53fe2e63e270e2a5cdc608f02d870f3403e9f7e183012068f8658c88474. 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/6d0089c1-4455-4ad9-bda9-c17482977ed7.json and https://artists.proofprofile.net/proofs/artist/6d0089c1-4455-4ad9-bda9-c17482977ed7.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 0x141774a132e70abfc77ea44df30dc05b4a71ed0779114b964164b61b9cc5ff3a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:48:14Z), 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/QZNWT2081838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6706a0a5afb8f0423f9c8c36d90c2d203d12826dae649a930aea79efac3808b2. 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/AUMEV2176848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8129f3c634a065f397afeb43fbc131a5cb5a3c10baf2ea06ae12462c174af81e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/AUMEV2227419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77f7f5d72fcecda1f7fc4468129f91919b83558dc496e8d3fdc1c7a0bf4a2c6. 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/US7VG2317044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670fb12e2846b746106a869e42d5c6dbc21b3c50c51609c1290821bc89543c3a. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-02T22:12:38Z), 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/QZ5AB2308473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea8ad2694181c68d719284b6000501a155edc16c70276ce5f9aba648c5150e5. 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/GBWUL2315215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d2faa95f3689cd49b427649103ad71c4008a86d825b7fc8705d08ec87896a6. 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/GBWUL2381042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cd018177e2d9ac6383b20096d7daf87488b0a26fe023102b6dc6f31f8f763b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTV32387724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0893523354f5317176329b67392720b18ae4eb10d7ffa1642ad899c1a382a2a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFYX2448557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2221dbbf802e5a98d212ad771579c57aaca01d3dafe5a82f11913b5febfc0641. 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/QZ5FN2433747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff886a21080cd8a62c1d15a96bda140759b9095e9f1ee426afbef9e30e1a8aa8. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USLZJ2421948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0b212ce219241581cd4dfac08f5acb2b886bbd56c8e9a4f4b974a8eb4b34b1. 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/USLZJ2486881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6fd476ec2c47c326b5e4f0e9da1e55f1f761b784e57f1aa5f0072ecb884a8f. 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/QZTRX2420210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0468b35a5e45c2253431655ecbe67f100faf2cce8488b0bd026ffaa2d4c97ea. 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/QZTRX2370878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670fb12e2846b746106a869e42d5c6dbc21b3c50c51609c1290821bc89543c3a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5AB2308473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37a4a95aba20ed00f186ab9c7f3df4ab4248bf318cc46928d894bdd2b2db1a3. 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/USLZJ2457751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3a1ef983476191d50e91e157d9a75d16e215e13244fa36f0543e12e055891c. 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/QZZEC2307948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77f7f5d72fcecda1f7fc4468129f91919b83558dc496e8d3fdc1c7a0bf4a2c6. 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/US7VG2317044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d23d3c243353d89b29d7b2acd0b5e124530467ee348914bfb46f7961070734. 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/QZ5FN2433692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e569263a852ba4e10e1109952e56f77324e4a8db65f5cafce83177da1c09c6a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ62257350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d2faa95f3689cd49b427649103ad71c4008a86d825b7fc8705d08ec87896a6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBWUL2381042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73506defb7c380aad797e881d114dd1b0ef7c3afe2205ba425ec05f805b119c. 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/GBWUL2483976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3def23c8841ad9fc4b80e34e58511811244d1c95c754e41413fce9234650ec0b. 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/QZTRX2446795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27081e4f6c8451963bb31b7f6592c5a3c195737941a1c02d7621729349770ead. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWDD2484509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648330768d8132b936f7de18196f16f43b36b20f255962630b49ed28a0fbbce1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWDD2489257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf49d6ad33cb0cdb8204218837c77a1dd77d760c607251fb76788cba52acf87e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZWDE2434336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e507aaedde9844793fed17afb795582711808e9421fb5902670ee28b4d33491. 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/GBRKQ2472079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e507aaedde9844793fed17afb795582711808e9421fb5902670ee28b4d33491. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBRKQ2472079.