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 0x16fa3361044a427cfc58b32c91609733cfb2a3c192e8c61b8d23444b23f00081. 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/88e13fc3-1fe3-4729-b1de-502bfe869d9b.json and https://artists.proofprofile.net/proofs/artist/88e13fc3-1fe3-4729-b1de-502bfe869d9b.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 0xe12a28752fc3776c23d97c186a9579fad6c015a6fa6a51dfe40243359c1b958c. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FR2X42263689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91ea50538bf5ba16c884154d5cae7966b3a5ece4811a2ac0c1a51312ffe4f03. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR2X42263693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e40811292db057757b23f9dee6596e6dbcb91c940bd6ef6c16514db86fd9c8a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR2X42263695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5969bb4d411ee6e33a8c515cbe1d8140481e8f85ff999a349005b273e2bb728b. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:27:45Z), 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/FR96X2276783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae8c02ee7a8a426e23c9d1f60fa6c819b8aa700499de56aebc482fb93f51abf. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/FRX202213031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa36e720c83f1cfd141d25a277b87a69162709fd23ba8f7ecd7ddc1849d795ff. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX202216210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd0180182b530c52ec2862e5eb20eaefe6487d089106a0257559991b59ee417. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/FRX452231043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d053564c267c7f6f35e26abf4aaacf0345cb6db6eb7b50e3cf98b92258bdf2. 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/FRX452233448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f9302ff64fb03d31857a0b59b2f5356829cf54173406939da6501062feef82. 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/FRX762207262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853873f23f68c3b270d541888ebae87799c2bd9869196b3dfc2931afa1818400. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/DGA082207745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de055b4dfd181bc5bda62f54b7939a0d2e81d656a102371d945c91b7f765798. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:33:12Z), 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/DGA092209879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5735c89b67f6150aa06f5c426eb5efde66cf18da82508ade0c2e16a08ba6faf2. 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/FR10S2389408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec547f013b30da74978884f0952fedcca13241ff9ce6db8839ef67066ce2147. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:43:55Z), 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/FR2X42304706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793db5536409a74eaf1eb19b369d5e0c9bf6cf1c6b563af1d06eb3cfc639cea7. 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/FR96X2384772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa4aeda127c556aed812624256fa295ba80d57ac9e4f1d9bdb593d74efa9150. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX452398953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86710855957f4e37b500c73247779bee6aa54b7a274da3a015a241d822e41d5f. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DGA072321435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26de80d1f50d5107b28aab1619ac28dff1da4cb0ea8b01e7fcbc17a05fae4387. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DGA0Q2397940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b3e35c949bb9c839f499d65331325289dc4208cd705ac63855933c8b550379. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX282411057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130448b09caf46a251604f2d92ba52449436b8deff5bc782c1836b064fa9cd9f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX872441728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772d2b2374916fd51b673835b9a38f0334ca59b62761f828b319042f0ca28c69. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FR10S2561157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9cf8a7432a8bd45c2b8ec198230b910759c9f69db9d0a41b43be59a9247850. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:42:37Z), 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/FRX452576387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ab76d2c9167c31d4fc01d556d0388931af8848c8986c47959d5567a5d15c8f. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/FRX872506314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66dd4b3695ec3c45a64a821930d427100c04e281d334d6248378495c70ece1d8. 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/FRX872579071.