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 0x38dedcc3f6ef253cf664c4c8ef42f8571f72ab29e92beff99d8f8253830ea7a3. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a316cbff-3a1f-4a31-8a35-859886a44667.json and https://artists.proofprofile.net/proofs/artist/a316cbff-3a1f-4a31-8a35-859886a44667.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 0x480b9accd2fa05639de727b0a710375196938b778d9436a744d26201a959d366. 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/BCE7P2400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed189b92c09ea6df04c2320f16668b8d05c0eb2eabfca819c6dbc73a40af2134. 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/BCE7P2400148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9108e8c3eb3d48e81364a5ce2c8ae33c0884bf08d2786c7e216c3d7d646cffdc. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BCE7P2302822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5191abf00004601b665cafcca80f710bf58b505ef63147406935e23ab452ab63. 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/BCE7P2302819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d0dd7949526e239f692326d003e63ba34740a1401608702cba26d525252606. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/BX4IU2361658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6442d7d250ebf1263491ae96a2662a2f8382a5a47c9ac156774ba4ff22b99996. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BCE7P2302616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e75819a5307b83946c60bc3f9bbb741aa9a95a78e56a52f0de8d7125f50c5e. 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/BCE7P2301792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62854063a1a1fbe8c9d648acf5de810a728e0b44e9e254a47f4746403f71229c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZGLM2572066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07714435a0e042b79675b8b5bbd287b4747c52fb81a89eaf7f4368237d577d5. 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/QZW9K2457653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e15e0069747492dfdbce38572b9d1142a6c2a79dcbc81ed87364e4b1ac2fc3. 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/QZW9K2457660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c035d9ae1e8e4caae91dd0d15d108aa9c3988c679cd36fd080f7a18c3e938dc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJZ2436418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf46425185ec2075f9053014955a263b0d42471fb7ad92d71d8abe2a3a7cee80. 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/QZNJY2438268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30c8319cbcb4f5daa564d0c60814903c64ccecad0161fbe2c90f6bb8b9a2ea9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BCE7P2302602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9c5db9f5df46e877f712f186b0fd42cd08b2f9b656017c7fd27e6c54f6e2e3. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BCE7P2302818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb3aaf17809c960e419f915decba0d0725c0742a200659c7bc90d8c5306b1bf. 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/QZNJZ2428812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2d56c20cef235d8a3dbc412c68ed2d05dca5a9adcb7a77ce3f362c2d36377f. 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/BCIH82304490.
Vozes Celestiais a Restauração de Mundos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe968aa0b63a5f650e0d4b86446fe83e828675f2e0188da57e710667297156b5b. 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/BCE7P2302498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ce3c164b7a7ee5de41524fb027ce993e325fe49d70296d6d878d567d78fe83. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BCE7P2301896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671d038667f333d297b3f24dc90000d28129b1d16f0004d037f0a8df6a0f69d1. 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/BCE7P2301895.