Melodeon may refer to: Melodeon (accordion), a type of button accordion Melodeon (organ), a type of 19th-century reed organ Melodeon (Boston, Massachusetts), a concert hall in 19th-century Boston Mel
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 0xee458cd6c5c6d7df9476c5a0ebe3fbe49a2d0ffc158a8e23c4a722712d52e6fa. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45ff76c3-f41f-4e6e-a5b8-9dcce623428b.json and https://artists.proofprofile.net/proofs/artist/45ff76c3-f41f-4e6e-a5b8-9dcce623428b.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 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 0xa15edf26b2fdcc7ef01e726151a825b5669046b798cb0fad19659860adc6df89. 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/QZHNA2299218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b57a19985fe1d26c2524ffc404210f99f8b84a4ea574febfb26f85c3faad72. 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/QZHNA2299209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9a48bd73b7e974a394fd9a7c29a32f16dd61a8b6db5553aeaac25aa5e6b996. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZHNA2299213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9a4b04b910b9c80f15a56b4f2ed3951766a8659bd0a38674ab84f4961ba489. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZHNB2200308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f50ae287383269ab288abc2c3b9a1310ce9236844012f6137283c48dcb44d1. 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/QZHNA2299212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e7174c239ced3b682089ce75890d0231018a88982d1513735d90fe191927f1. 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/QZHNA2299215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0149d51fe47b21ebaf929c45e9ccd2843ad87dec6b2e3a10f8d08c517045c3c2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHNB2200307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d5595a06ba6bf00e07d30af127c0d54bb81753143e5a211522ab1217ff5d30. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZHNA2299208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0ef4912af3ba1d0cc87a27b41fe47a0e83c133209ab6c2b3e11406b9295143. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZHNB2248848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf881ee68fae752467b393fb41f93488916a2fdcf738ef39ab684bf0b84f801ea. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZTB22262764.