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 0xf558024965d428547e59d29cb4fa15fbcb57ed2660b0457cd4d8ec2969585aa8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3335b05b-9c32-4e05-a09f-b5140458ad1f.json and https://artists.proofprofile.net/proofs/artist/3335b05b-9c32-4e05-a09f-b5140458ad1f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wellness Meditation Relaxation: Musical Images, Vol. 100
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 0xa088eb4eeb601c797ed248341b01a26aa545636736950699a71828ccffe19862. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AUIG01404115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7fbf8a740a25d2548ec0dd767328f376cb8dfe848c723a031d7d007f7c4b39. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/AUIG01404120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b690cd571aea5ffdad51fc9461c8396f43925cc969ad7c288deab730d2853d6. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USHM92017415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d156234fe162febd5934bd8dcff0822dc4e07beea4666327ce7d6af3ab943d. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/US3250831101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d3665e89559a4b58f18ef0eec8a41c89cf37b3d5974f01f7efd50a115a619c. 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/US3250831102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885e87c4edf5348e0f9f85161b1e16c1c08e45a5f4a208171b071f10782e9c20. 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/US3250831105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f2f6399db33ddf72167015339addbc6e078861ec16dbee1a57f01fd5f2db40. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US3250831110.