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 0x4cd374ba714d2181e562479336cd97d6127a9229725fdc7f32eb217cd67b6a4f. 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/fa60f626-6430-4c33-a789-adb7e8cb9eb0.json and https://artists.proofprofile.net/proofs/artist/fa60f626-6430-4c33-a789-adb7e8cb9eb0.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 0xaf5baf981bf9147cd9389f6e2d341f18733115a353209deb16500986c5b7d318. 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/AR6B52200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853376264cd9a9569e2d7ede5e3121b9168a0e4932c63900e496c5eff9965c35. 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/AR6B52200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0157105bbf8265af254d8dfeb6d51956c1d990661a386148644ac923f79ec1. 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/AR6B51900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd957571fe67dbb6504f6d995e49dbb8dfecdec37695e196657de7ab74f068383. 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/AR6B51800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbb200f3ca5ea41edaae88b73ae5d14847f2508f423d4060c578bf01d3584cc. 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/AR6B51800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd9b2b19f30f5b33eb934984893a0797a44642536a0fe825455c0f461d9abfa. 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/AR6B51800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcf5de472848ab35d53550e277e84951dcead2d4efc83e6a61804247aeb9ab3. 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/AR6B51500076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0e274015262cab274c7cb85ce8145422d1ed9e18db266d54dea1b90e34ed5b. 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/AR6B51500077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb17bbb6385bd4dadc064bcc9181d167432e95da22eca60d93f349ce1c0b30b1. 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/AR6B51500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aeb42b0f6379ff7352034cb4531c15010695a2241e0bd907f51963fdcd15329. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AR6B51500080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5523a2078940784c780949fab3a17689a26d56229e99f6f947a801843015bf. 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/AR6B51500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3791ad167a0493c1a22a182e2502c5fff4cd99cf260b7460ccc4e2f224fc0ad. 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/AR6B52300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8d8d2bd0fec95a7c9421e72aa6c4d95d5a1cf3301744a8f2573d18c3f02717. 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/AR6B52300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ec033eff520717eb7ee89e49c171d0b8fb36b68204a162f112c0b861122a8d. 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/AR6B52300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb4675a6ede8736bab83a2eaed1ff897b87df684e5d29916ed8d48a85cb937d. 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/AR6B52300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe52f3cdad8491a00523d85413274a4b85d5c88dfde27986caaad3739e408d9a. 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/AR6B52300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8d8d2bd0fec95a7c9421e72aa6c4d95d5a1cf3301744a8f2573d18c3f02717. 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/AR6B52300077.
Ceremonia: Geiser Revisita Ratones Paranoicos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6524d7d5df44b3f0f187bdaafbe6cb7538c2ebb8f4277b6f158824a6d11f1fd8. 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/AR6B51600169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e87c2f9a44c4d0a4b240fd6119e6165a0294a24254d9e0627e5abb61272ecb. 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/AR6B51600172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9b104641a43e8200a9d873b6c4f968b2e5d08da67f535ff1e6ddf24808cea7. 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/AR6B51600173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7df3ff5c9efc3657efbd2a966881df53d6dc35381165e7294701924368138f. 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/AR6B51600175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4888c26d1c2530ca3703867b37c194c8267748079e04db8663a436e5e7e633e2. 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/AR6B51600179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ff474edb6a93b7c91b77e1cb3f36c229e3e6491d1517ef22f499a279343167. 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/AR6B52500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f99c6d33830ad8dba020ed226bb38f174d1c9709f9eead595caf836cf772dd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AR6B52100058.