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 0x286b574a7e8a99a76dab4199ec07b82501df9df95728926503d1e003f91c14eb. 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/e4f614a2-c5a4-427f-886f-308312bda3fd.json and https://artists.proofprofile.net/proofs/artist/e4f614a2-c5a4-427f-886f-308312bda3fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rain: A collection of Rain Showers, Driving in the Rain, Thunder, Hiding Under a Tree, Rainforests, and More (Loopable Audio for Ambiance, Meditation, Insomnia and Restless Children)
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 0x16716e8cee30e01f753ccc2fed2f44cb677997171cfcd60794bdc3403b10f682. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMHNS1302231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cb3d27199468022cd5f5d7559c67804da39c19de41a786cdefbc10540d73ae. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMHNS1302232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bcf803678390fcb4f70d66157325bcf8ee487ab6159373812d6f065e303574. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMHNS1302236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831f0cb99e450d03f685e5cb0fb7ca64c2a86034a0e5cbfd73769fca867bdbba. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMHNS1302238.
Listening to a Full Rain from the Pavilion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9adc739b60370fabb578bf3ce5ba2528111fb4b731d5c09970c97a2018ab04. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMHNS1302241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f399afbfe0397cf21e573f66acc68275d1f7e2fc1b83258c53e42feb71424a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMHNS1302242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e08699b5758522efb3491fc0613e75e5b444e1b471aca3cca4770cf6fdbb9d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMHNS1302258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7841d9e5ea0326eea8cfbc7ef22523d90af3b6b98011ef3d9e3a7e14a00d80c6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMHNS1302244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f70e8a4d270a885697f6dad52a2822509dca7431fa022224ca89814346589d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMHNS1302245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2316f1cc0da359a97652a73ede7890bfeee97d204ed57d9d0e523a42a27e31b7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMHNS1302247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf3fb95a2271da15729c4d9142321fdeb8a7fdd8950d2a84764b947b769be19. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:44:57Z), 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/QMHNS1302237.
Sharp Spring Downpour and Thunder shower
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a51c59b68fe39c0179cbadd9c62e481aa76943dd4a973442673852f9e600a4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMHNS1302251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805a64e6fd16797ef52d65ecd56a62e8d156b2af84ed753916a1fd5e900b8818. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMHNS1302254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32302d9a56c3ee19088fddf603ca5cc8ba1c06f5af61d0c944283ab7ced479a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMHNS1302255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3a52d374cf89eeab2d6dc9a3a5c93e0b85350a893bbd27b8b64fa7b219b996. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMHNS1302256.