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 0x7864310e10fd0557a9cdfe678681fba3b262735216d7f68bfc14f68d140c584b. 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/de92340c-e4d4-4cf5-bf94-a8ac699af771.json and https://artists.proofprofile.net/proofs/artist/de92340c-e4d4-4cf5-bf94-a8ac699af771.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 0x971bb957e605c615ddeff0befb99f0d5f10026f860c546c86ee6480a7dd8ceb9. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEQ022009136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3ec88de54c23cfaccecf3f4d9405cf0ecc6db4c8c50c0cf8e791e89b24b491. 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/DEQ022009139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdabe002f2ff49682879360bea699257ee5290158cb6634b1dc69ba1d8489b07. 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/DEQ022009140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13debc2bd63a8ae0934ec2f41b73c3150c678e9c5b8cc6f3841b161174edad5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEQ022009141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a44def60c9273097bedb2e1134d0bf059fc2afcc9ce0bb31858d8aa5ab1b0b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:23:04Z), 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/DEQ022009142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a299ac798b9f4dac10095f6de236789ff85d69c2ab2dd8f947caa80ee191ae. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:23:40Z), 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/DEQ022009144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2560be2e20cd4c857179d88c8f2d5096ccbe920bf6c7e195445a2f097c12287. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/DEQ022009145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae946cec11ccb4a90adb246d62ded4dc3c0d81e0898d740a19b5db46f3ba2a57. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/UKZGC2400723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16eba59c6878cfc4310287708ab4449807bb55a668027d0d99c3606a05a666f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UKZGC2404290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9d636800fa11951e7142531773359868d7dde8ce909d0119c504d783c7513d. 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/UKZGC2409659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e25878e95ca02e97fc3d0864a4791f6a4c1cd0eee25075e05ab1c298a4ab3a7. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/UKZGC2402471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f10a3f633cadc3c18da3dfd314dd9971dcf0cc6d711710835a5a64e377f4ef. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/UKZGC2409661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff06a50cce3af0f08861e0893655e510e52b9a31625a78cb63cf6b5a66f92cd1. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/UKZGC2409662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7fae1b9e36c5ceadab3fb0738741224e33d86efe52b683041e1571bced3676. 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/UKZGC2409663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae946cec11ccb4a90adb246d62ded4dc3c0d81e0898d740a19b5db46f3ba2a57. 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/UKZGC2400723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df68f24423c776c5fedd1f7d4540b8355f5f9cacb69829878da07e80c2738af. 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/UKZGC2409664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55401298ad9bf4612b5db898962f4698c5ace3fd24d707f9b26170a6d53c294d. 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/UKZGC2409665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ce44f26c60598e9eed2b1b5344b30c611cc122ea3d57b06fcbc805a2870667. 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/DGA0L2466414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0bcc3a6f5c62f53c4e16e86ebd996cfcb4658743f9bb647e4d6fdfaa6e1e01. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/DGA0L2466413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cd4d508c3adafeb1b584391bd516f192942d3b88075635720f604d9c6ba662. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:52:39Z), 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/DGA0L2466415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8da0be8598728ab7bd0d481c6bc51557f5b0b7d90fbc61c1386b858f1488d24. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DGA0R2498702.