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 0x82663920fa60cdf8e900e9bf029a8cf1d4ba76f01f9054cddff7713df7e0079f. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3f41c8e-6fd4-4732-865f-456008d25513.json and https://artists.proofprofile.net/proofs/artist/f3f41c8e-6fd4-4732-865f-456008d25513.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 0x45cbba46e87833a7e958e77510ba28453df9afd4533e8c53e7ce1a68420141fb. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZFYZ2203093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cc0b4c363d9c87d97df4d2328d9b3c1864460cd32fdc333907a8f75867851e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZFYZ2204779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fd46099e7c18e9f69f322b2c9d84331c983ec3f1f0b6f48fa8136e569744c5. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZFZ72442135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472b7f57195ab37b3d8cb672a137453874b06821fe3a46fd8a155d8a25382d56. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZFZ22358724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59ee6edb197588a7e739dd78be636b484f73b977f3c41ad3752e2f6372359dc. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/QZK6G2383102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7491dd37a5515c58f41b7d5c5a8cfd97b8de867fd27f60c5e2597256236195. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZK6Q2381943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59ee6edb197588a7e739dd78be636b484f73b977f3c41ad3752e2f6372359dc. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZK6G2383102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59ee6edb197588a7e739dd78be636b484f73b977f3c41ad3752e2f6372359dc. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZK6G2383102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9628e2716a544491d548aca8a1932d0f3d179d4f53edd0c81b0a61d6abd98e6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZDA42589854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33de97d20899d3ca47b238b266634241e23f58e8b694c7f1f166458e34e3cc2e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN62524279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298d481b931eca7ed6cdf73c49cd756421cac6d0bf3039a103e055e259905085. 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/QZNWY2593234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdb2890917921ffdc9a906c00068d2c12515c05b23da110d5a8fb8abc73741e. 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/QZTAY2500385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff14066e21c2e305bab2d82c9acd8fbeb764132db1463f9a32d57c3f2ca3369. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6K2354749.
I Just Want To - Civilized Creature Remix
I Just Want To (Civilized Creature Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fe46bae3b912eb39e02765680e2f8e4cb12cfc514fb48dd071669946b18915. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZTBA2337800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf3ded1ecf39df2a7982f5866e5c3d6e889d261b5290609b1897abcc261ad28. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKW3Z2203268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8c94f1f4296d5dc02f241b2ec0736214a67e79a8b762adcbf4b8ecfa67da9a. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/AUMEV2434570.