1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xfd036871c90fe51bbf93d30476fb5b2c26b901a19924e2dbd9686953589373bc. 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/83a982d1-a92a-48ef-aa34-5802a07d6008.json and https://artists.proofprofile.net/proofs/artist/83a982d1-a92a-48ef-aa34-5802a07d6008.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 → block OTSBitcoinBlock must exist at that height 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 0x8ed9ab95f2cc6a2a1b58751800b0177566345a329766e6f97635d7067bf4a506. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZEXV2000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8075ee1a5f83f7d8cc2ae0c2138ae54cd6c76f395ecedce15661a3e1496bf286. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZEXV2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5992f182841a94cadcee0b671286786747c7a23d572396a261315b49f24d80. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZEXV2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430aa430c0bca7c4293933513ddd8a605c22ed2adae1bb9e7cb6b8c91ef13560. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZEXV2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4b0915ccef4e83c9840909698b97048edef32b224ecb45e15916ea7e119058. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:01:07Z), 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/QZEXV2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935a9975a0fdaa51423cf3c9dd5b6e7f408d9a8597865839c7ed4c9d7a6de5b3. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QM99V2402201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12994b789dcbe0bc557e13f23dc9509e8e9c5a3e285a01a5d43b72f1a63132f6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QM99V2402202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf3e7378ccf9480867ca86fac2ebb0c35aaa3d597cb6c86fb11ebb897e4637a. 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/QM99V2402204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e7e90b99f7e6fa1ac31dc28238e813f4cb8c9a30b66ba3b6404f7f8c99f104. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM99V2402206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2153621dfe62b03a1b191f4d4257182c61e366cd0b7ddb4150dfdf067a359d7e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM99V2402207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f007262484deb425c5a00c36efb68f529349c950526971897186717b9752fe. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM99V2402208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6d614a362b273cf7610532f5cac63bcc8533f6bccaa617629e2c05edb28dfb. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:51:18Z), 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/QM99V2402210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4f3b2310add1494cf788b6d2b60976e8923c3f36701009586b6896951ea1ec. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/NLA322500027.