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 0xace5932bddfbb24f369a33b751c6c4794f448c2e700953cadd8abbd6d9b88c9b. 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/0174a377-17ea-4d3b-9e83-8b27ad0ae34e.json and https://artists.proofprofile.net/proofs/artist/0174a377-17ea-4d3b-9e83-8b27ad0ae34e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Voltei pra Cachorrada (Remix Brega Funk)
Bota Com Pressão (feat. GS O Rei do Beat)
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 0xddb607b7905605e833b612e54979c1b8c4880dd26cf7262bf591591404f7739e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZEQU2041794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b927edaa08da0e0b6ebe18fb4b8fac4d62b1690cc71a18f069543ca5a97f11. 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/QZEQU2041795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336c234bfd349fb6dfd660fa8322c9a8ffee238072de56231bc946b77bce4469. 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/ES07F2500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee3f2227bfc2d60788c81d90226cbad0d23371ccc1583872da04d03ee8e9fa5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMZ92510779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ec67050bd43d42762f30dad238ef9f07c03016844df7056efb7f7601d6004e. 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/ESA112565574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3f3559753c5ed08432f8739d76a4584ca0930a35519a03ade57cb4d49ac980. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZGLM2571251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a468f7199c2c9d05fa6953e92c7b1f68e91333c78ddf9dd6129138801bf959d. 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/QZGLM2559801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61649486abcb2f72811dad85b47147fbf667f260ca653955744db9a705e77a5. 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/ESA112560823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cd723dc18003a4fb6dfc055a7f61145611c00b9be01650b07b00b93e471561. 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/ESA112559368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0f20e2a445cf9ad92ff6a1366869bf9aacd2e00aa03c6a026b24ca27bde3b8. 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/BXP0K2402297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c4e2c8aab0ad26d397b7077d5c9a945a1a38b1e2eadd24038773b58449ecaf. 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/ESA112457696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe155ab902ba0ec2c5094bb50c5551ce05e77aff30e667cfaef5edd964da6803b. 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/ESA112457695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a35af0127ed294004318f09627debb6f7f9669e31ca2f3abe6a62f2cae3716. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXXOV2000003.