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 0x80cb971331557568682a2f93d4bdf2c6c760ef865ced2ae00a1e51e4c91ec23b. 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/10ee966c-2258-4f5f-a5d5-59f9d962e2fc.json and https://artists.proofprofile.net/proofs/artist/10ee966c-2258-4f5f-a5d5-59f9d962e2fc.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 0x35e5403117c8eca0ed14a67b70025d863187425538413b620f6a53d21d7a8b8d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE5IB1600172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5c2de864cca004b69aa5a01077d7867cfff1be83791ec6e749088ea8be876c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE5IB1600187.
Nocturnes, No. 1 in B-Flat Minor, Op. 9 - Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c48dbbace65e478b3114bbcc63c98e7edd1b6975a948ee34e00c4cea26ed8bd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE5IB1600182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c9deac648bb3f03cf0e2929da5ad0f90c9a9b85e178df8a617e9b6c347d8f3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE5IB1600179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad6395c8097e5c90bb916054f6d3c9250b7d05ef3c72dabab2c19325ba173af. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/SE5IB1600178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66e977b8e692e68e6890bd67d2a31b8e55c81d7bba3faa22483c4125bb60998. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE5IB1600254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdab7e71a4933cebc9c8a67e86fa6f8323defbacd750fa6aa201305b46ca1ef8. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/SE5IB1600308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da08835e206522ec381cb111d2ef84a31b45b9de4f77ecb4f8af2df7bffa2b2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5IB1600188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0be96e70c70f030d4c3235d2e0a9e99850e334530195d2d3b1968611399bc6b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5IB1600184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678a04b3d6f5e654109dc11c43c0bb181b7d4e652b836efa34082c9148c08a20. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEYOL1698701.
My Loopable Background Sampler (Loopable Audio for Insomnia, Meditation, and Restless Children)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7079d5f3ef255913b81068212a4de2410fe6533fb7c796f3507288e9c05120e1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMHNS1302211.