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 0x463de731ec84a792d8a4fee8b65fd6505694afd3b14561da3fbe9dede0a8f6aa. 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/e9d64a9e-4583-41a3-91c6-8842f52d05f9.json and https://artists.proofprofile.net/proofs/artist/e9d64a9e-4583-41a3-91c6-8842f52d05f9.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 0x788a021857f4c8ceecbcc4e0df1f20d30657f82f53c9b0c7f6cd7daa78bbedea. 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/QZES92122924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff42a4e66d20a19f367b45795371cce63c290f22394a5db99af32974fe83d844. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZHNB2167914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8220eb160613d9f07e7a6e88aa906a239e287f294c310ceb5b02a834642312. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZES72143523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af556ed57a20a9ccb3c59227396d635aa54de5962ecba0bbdd2e14e9b2f4f9c. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZES72144340.
Building with BdoubleO (elybeatmaker Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf683b2792fdd4de8c700ce991d0085d3427fdb2972690483ab2c3c7c03f32d7e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZES72190551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cd8920f0c9544611922956c73b37807613132e621974e29750ed85e7d0da34. 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/QZES72189086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade772316c48332deba24308baa21a106a920207f89be52bd2344bb95dc34f31. 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/QZNWQ2176878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f2f7b3054e5d751857b7c50ed47160d2d1101ebae3599ed492e677d74d7b1e. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZES72157732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70cbd8caca8f886b6ed0e458512622c5380c0e3559fb59e9fad10ec7fb65f8f. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZES92137052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719a958508d61acea999a96c5055c033f6fcaae74edbfb7da0247924cb9795a3. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QZES92120567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c86454bb77dc09d472e908fbc36923adf606ceb184803124bc9f55a3db7431. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/QZES92149696.
Stuff And Things (#RemixMyRemix Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0042a05297597ad3893f690d709ccf1cb62cb95bf1309483cd7a1cf31892ff. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZES92122917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7908df9697a5988606f6c5c2c70cc765069d2273f36639186e2c4ba5bfe322. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZES92137021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe789ab122b04bdfceeb555cfcf34e6c2d7d0245287f08707f2a5f7683f3110. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QZES92122918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9e9f20ee505190f467aa61ae50012c4893c3c6962305c1cbb1222e1d8973f8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZES72158829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c29419ee9b058c1656f1166acb0c462159eec4ea66b7a9d8bfd92e0498ca06. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZES72157053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1345295131ff3e01614ad281c0b15888f136f899359b96f8d660bca4854284b7. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZNWU2043192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9a3d9afc680d77cd1ca08f800edfcce6fe35b812bb393d1cb24123e9625789. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZES72142632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5180ea88195e18031626d63041499fbffa1efc3b02eee75e5bdade7fb3e9cadc. 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/QZES82100208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba833471d95b0f84fc134fa27a27fdb83a6dd9a0965550d1a0e838e36811f2f. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZES82198471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb3151e8b0e061fa0724cd56047a1b498008a29f54872757f81b483babfdde8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN82179396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1365f68d5f12dc52a39fcaaba4297efbd56ff6d740d2dab8070a30de436d89ee. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMER2169071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8679cbe1173a32362531f702a369426f18ca9dc11bc1206f962ff0fe036cf6. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZES82248380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f03a2b08a8cca42eeb25388b38e3d3d45830b6bdc72eb0ef75f07c8ee10056. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZK6K2477606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51333aded6e6c9e8a5c867e6523ecf653f33f0a30d61c40c09fc241503477df7. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZFZ62581625.