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 0x46d14330465ec59694deed5fdf6c1cd1e2c8dfcc0672955ac525f0f16362c5ab. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23d7592c-9e54-4591-85b8-c4fd677260ce.json and https://artists.proofprofile.net/proofs/artist/23d7592c-9e54-4591-85b8-c4fd677260ce.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 0x7ae063553662d54fbc4564149610e9561f9557a08341858ef46dcc1ee774806d. 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/QZAPG1897859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e1ce8e6e99008e9888547fe020a8eee6b3f436162e05254ade62bccd0ad6b0. 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/QM2PV1834319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7eefd9b7845bdd20611c1e1af1dae16d0b1bae32fa2441e4b66f1bd0a090938. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:58:56Z), 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/QZES92154999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f899926613f1c174066c95ae878e2b23c9ae9afa4b1a6c906dd1d16a9b6fda6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZES82227071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec908a76697968b7e0691c888525923eeccfbfa1752267d7b69fe81b8d30350. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZES82227073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fea6a1cffb4a681e59598622a4039bba3639a774a2a89956a88cf36f6f0170. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:22:25Z), 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/QZTAY2221263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49880331e98df49604ac0b249668917e3c4ac91404ce74d6c39589e657ec8001. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZHN92325902.
One Thousand Stitches (Phonkboy Whyte Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f77ff1690f747a1575f2a8a79acd4ebed9a1589f2a706a99295bf9257adf36. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTAZ2364948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7133f66ba53b4a9c84e9f82091bb64c1f0558657b3315345ef044344de5e4ee5. 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/QZTAZ2364949.
Merciless (Sped Up & Slowed Down) [Special Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c26a75c323dadc06cf77586a0ae6182b9ce051e828c31506b34c416e103efbf. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZDA72511841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d04544a793b0321cd7d31247938fb8ab18fe751401a26f43540c8305af3ccf8. 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/QZDA72511842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f6c34cece2336912ee3b8c2b45ff21e123255900b220950def71ef2d15e12d. 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/QZDA72511844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3de4789b001f0cde2de4d093412db5eb8c0b93061e71a58d4653de4da7e625f. 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/QZWFJ2583480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f66241a7d5cef7fce3f1206a1a02ffb8dc5404f58ce27957a2768dc5f5d0b9f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TCAIF2458715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a1bfe3d1f242973fea738e2f5741e2f930e10ba21df3114f0ebe31cd331ed8. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEYW82102195.
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 0x84058527add811ba6209e2e6a21938e2da9818ba37659e9ecff8dbf0171f66ec. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USDY42410437.