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 0xd573eb1466247237b3564434e9a01c7efac954067bbb7a0f999efc8046e7e8d2. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54b7ea98-9c26-4d2a-b1dc-d1cce70aee0e.json and https://artists.proofprofile.net/proofs/artist/54b7ea98-9c26-4d2a-b1dc-d1cce70aee0e.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 0x949040a840af0b9070aa787d6d898de34451c1becfaa8a7b94a4de2a830655ff. 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/QZEQU2268324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd4fb67013acc7c4c93ba41a7d740d711137399e98105530abe6aebf292439b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GB8KE2164103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6858dfa3ab4027acef66e91a1d187a701f68c56c02afe1eedafd6e132f958444. 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/GB8KE2310251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfc3e21b3c24fca1e28dca076b14a2a5e7189bfebbc59c5cc34c8d54deef470. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN62373032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca36a4ff53fbcc6313fcd4131132843b7537c3f039e7738cf5498442998d017d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZHN62373029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf57d73152ec94d1362f6b2cdb2fefe6cd51ce507b6480d64b13e98be8bd08af. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZHN62373030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1e7af0dddc4de11a2712da1d43941b1a5ecb30d59086d70439db343132e4ba. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZPLR2118493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8821db087da2537cb4b035ccd82ec53fe40304623b36bf16990c6095caf080e3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMEM2061208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9804d04170d86d1809b0dfa0656bbee3ec39fd6d45c3c7dc9d54e3070b0fccfc. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZMEM2061206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04136e30727ab31b8fa694ff2a23e90618730f7a9fbce77c575a3b9be99ff4ec. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTBA2411552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ddc147032af6f115fdbb66f42d4f5ea4e3631a0f330f012882097c9c6845cf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTBA2411553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6858dfa3ab4027acef66e91a1d187a701f68c56c02afe1eedafd6e132f958444. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GB8KE2310251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074ac36f50640ed04364ec64fcd27caf4466a19e69c52f2a685316d0656d0b41. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTBD2391410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc276a890ac96745d3d5fa48b3132ea3b12d6d4b0e29c6d0ffd5938f789a318bf. 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/QM6MZ2223073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89d4ed01b9ad89f2c0dc4e6678ed0a25e3c69ad910a173c931a6c746f0ac507. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX3Q92106283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e700f0e681a2d99792fb2230d8b61a7cafbb24dc2a4d05987615c6adda346c. 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/QZHNC1922853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66abaec6cf71a55f01711ce7e9a6272f08ca98b2c51bc0b73e71a7996e258d63. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZHNC1922854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137b048fb7d5a2af831225464643ed23776edab54a894fe9457b5d415f02db1f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZHNC1922855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992ec8d3d68c2091acf5b7d01b0227b18cd4529fa03e4b46813836ef26230746. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZDA62018792.