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 0x754e285880fad31a544ee919d6ad5b67d2ecf6ba2e3c09fafc3ae0b65cac1077. 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/1df260c0-0f5c-45e4-84ff-ec93e18e7e86.json and https://artists.proofprofile.net/proofs/artist/1df260c0-0f5c-45e4-84ff-ec93e18e7e86.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 0xd8449cdcf67ba82e02f1fa39a23fa63b9e1fa91868a9d577cd269875ed1c6686. 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/QZHN32457133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c0c0ec81052d356d1ab3175f090f34a9ab2b5b8aed7e66e8e2ac2626833973. 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/QZPEW2418872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5279b6fcec1e1b5afd1a6bb385c433a303af7a3e145c619bfae14ba599975776. 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/QZPEW2418873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9ddd51ab181c45ff4a8087ac359a85553f13e029c3b767fd59770bbe32bd87. 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/QZPEW2418874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958a188e588aaf6aaa68ee97392c8bb8a6eaf2a3184c7a67e4e288c9ee3513ee. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZPEW2448206.
Let's Get It! (feat. Lance Skiiiwalker & femdot.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ac8eecb751e8b62339fc38f3d4bb6e4b94a593976d6d0141cbe09c1b6bc2b3. 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/US38Y2421331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda894f1955eff9751834c2422b42e40c69f8367ec72c3fd48fe1db5707d6049b. 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/US38Y2420924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd79cbcaf67420107f5a0ef51fa127b2c0365a124ab5d15b41a2a4ea3ab4aace. 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/US38Y2421332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30c5ce0c1b52e2dfba0892d56772c1d37239120d5f0ffbbc1b3f2a0ba6b9dbe. 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/US38Y2421333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac57a5a4b4a9b3586fe264fdc843227c9061eccc47382781afc60f6aa92063a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US38Y2421334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd907272769ef1815e821f3a78d1deb479af436fdd963d1a1d7cf23db588b2c89. 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/US38Y2418897.
#baby boy! (feat. SONNY, NombreKari & Menace4hire)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f313999713cfb7767869a5013015b9df4a937a11a90b1d3e9a1b5a028b6c6d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US38Y2421335.
#Dawg! (feat. Senite, Menace4hire, Gayun Cannon, Camila Isabel, LowLife & Aija Cymone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e785b38360ce51b92d10621ae29bd9b740f9aae2c469b1106df1c54baef217b. 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/US38Y2421336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cdfb3407a559f79267a5b331b1b2e6f1326550282ff94ce39143fa59d269ed. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US38Y2421337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24990fc1c92828ea34a7645eceed41756edf52e788d4207ccf4c750d9e451d2. 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/US38Y2421338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bae5ddcba1f86b3d06dc40693b8f48e5e1e043f3036a7d2d73727e5a3f437b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/US38Y2517013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa94e535394a51d2842de42f224e4aed552388a1184828f4fcef28e67957ea5. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:02:22Z), 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/US38Y2517015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb37e4ccae03cfde0727157804431ab952386351557e9452ae1cc1bc023c3bee. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMDA62556943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1669364818a56a687e272c1b59e9e079d8fca7af013bb3cad915032b31274732. 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/QZZ792472242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd2c67887cd14804ce06e20b5c77e9749fba5b8303f27684b3df4e7da25d4b3. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZZ792472245.
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