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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99647d7b019ffa124859e7e6be42e3de9f7b7b38ffac0b298e07c8ef74b054a. 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/66650941-c118-4c53-a76e-ca80377d1695.json and https://artists.proofprofile.net/proofs/artist/66650941-c118-4c53-a76e-ca80377d1695.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
"The Eternal Embrace", Overtone Singing Meditaions on the 8 Limbs of Yoga
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0576574bd85d682505d96b0623350f063ffdcefcbd1d68036681f35ec308b331. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USHM90450588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f36c73b197a86fdf8d1659b58387aec6f6dd4ad081b9c2f5364e1d2dde8383. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:14:39Z), 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/USHM90450589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe178f63d956239cc00eaf68898fdc307efe80c88eadba18686feccecf7e5205f. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/USHM90450590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71dc5fd29f8ba9a185f2c89152589ae9c14522d691cbfa745a6605a45e0cada. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USHM90450597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4728433c46603fb3a169a5ce920e0de081cd43a868b259b01572e6db4a4655. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:36:02Z), 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/USHM90450598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af09b8b8acbcd3a8c110e2094eb0a3dbcc63f938f96da5d193e762f5809209f. 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/USHM90450599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc1a0e53d1c828771d2998773bb6b144801a8068d359e0eb795f9c379b38464. 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/USHM20514927.
My Foolish Heart (enhanced) [feat. Krishna Das]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1aec0bf440e3244ef3f19390dc8f9b979c7a786e358e115712632ad20220d4b. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/USX9P1349005.