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 0x76e19a66a0874786add8bceab673a572391dc7d5a397fcdaaae2230baba7a7ca. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd408895-4a57-4629-830e-eed11d97142f.json and https://artists.proofprofile.net/proofs/artist/bd408895-4a57-4629-830e-eed11d97142f.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 0x9654bd2dfb02fc1462a6de87729054ac4115d0e948065aa8f232ddb3ee926656. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GBMA22443657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acafc8433f9b884c6618d99902b9924ea375160cdf5e5b4f5cc8c6ca55bda7e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBMA22443647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d9d92ab1c26d2b095e2c0b40f946f897aee454cba04ee1bcfc6861cea29958. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBMA22443659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b2f9d2a54b8c6a5d7b4befad2d792c44cf9f314de9910191a8cbdf895bbb0a. 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/GBMA22443648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4b6da1f1cc3f678755393eb9fb78a8ee0ea9de2cd0b41599855a182290d024. 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/GBMA22443651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5c09870073701ff7a778a87cbf4cc0fd485e2e5cc287d28bae795a44b12e4d. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/GBMA22443652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe093af3149745a59f1ea901523dde91451ce4c80d0b37ee2541146dd8c3390dc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBMA22443646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f5c2c1070806687a16b2da33ba056ed23c5852c7e3528a45ba30b06a24ae1b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBMA22443653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1546d3940244a50b3ccdfe1379b31fc1e74cb6fdef4b60f82ddc32ae53655683. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBMA22443654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a262de730582a00703ea6362a4734273f73b26cfa25242ee64fabc07c3a9db. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:35:59Z), 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/GBMA22443656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5150a9d0a710246ef08271730153670741af24394b57241ac13d6e819f53ba. 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/GBMA22443650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313f23920b1df51aff0f2044744f3111bc092f4442849113cce02542df97c66f. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/GBMA22443660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc5351d2f175d9c7cbea1017c60f9bc9c89e8d856804326d88d1072da5032fc. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GBMA22443662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d486369ce91e3f8a16393086526212bd774cecff6028357f6ee353fe76c982. 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/GBMA22443658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d957b6ef5fddfc471019ad734e82aefb09f3e884268e23c9c9e600919791ca2. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/GBMA22443649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a503edbbedcb5d5b36d34ff73521c121507c24226a60b328dfe7cefd4b2c54. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:28:10Z), 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/GBMA22443655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c7b3d9e941bbba15f556e9e26580fc07b74cb370717fb5987f7aae517c3bfa. 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/GBMA22443661.