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 0xf6399340131967d9a2c3b09a610ea3820b2ce53d0615293a0bab6524b3823a1f. 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/bc7bd88f-87a7-48c6-a150-a4ae081f6e04.json and https://artists.proofprofile.net/proofs/artist/bc7bd88f-87a7-48c6-a150-a4ae081f6e04.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 0xe447ebb772117e4cbef03d08d9571ac20b758037f07134e4d29a8f07d116ca36. 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/QM42K1757194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddd2fca795c9f986deb25eb7bf662184411ee032b4e8cc7be309c76d9f46de1. 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/QM42K1746573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24434a0cb537b32e3a0131183328622e07a9084ef78536b5ca7da97fb5abd00b. 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/QM42K1905829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4692139ed88ecf75e910b44734cdae63ac32a98cadfc7312e8aa2bb2417f141. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZFP51954056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4230006492ea848537bcb39de6cd457cfd34bd302fe49a7643796605ed886cd6. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZFP51987542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2455e34b222bce164c5f910d32255a0f1c2160bd74165a27359081557448596. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/QZMER2032457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501184205c3621f3ce42257918e72d7b87c179e4d70180d8345f48dcfdce0459. 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/QZPLR2015576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29c29854bffb9906ab15087429500b8897e34e826020bd81c6d56f113076aaa. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QZK6P2171250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c9e39c4bbfb494af8f246c79d6ce6559a2eac346e462687c39cc8f793ac94c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6M2133630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfe499fd9f9cffc3f4d606fb954f7f0c8e1b34b4bf9429b64df3f2314eb9438. 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/QZNWZ2152788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371056a395cd6993d78d915d424db7c91b7d0ffdb3717146081e169c62b83cd0. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZDA42216096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8d327249098c4473b1b18d8348c5ab613ff0c1ceade591ba3f065c60d3aef0. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZHN52321324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0239f99507ad904e097d0f7a5aa99993813b9f766505e5d21f5deaa004aaf9a2. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZTAT2108361.
A Compilation Of Sounds & Words Written When I Felt Like Dying
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a037250363b21e436682980747b16df36b9212d29b9f866f011a84a376b2320. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QM4TX2386396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a037250363b21e436682980747b16df36b9212d29b9f866f011a84a376b2320. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QM4TX2386396.