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 0x0d628986047a812197efb006b4d45c4f0419a6c21bae17e745f3a22be6843481. 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/7fb61f14-574b-4ec0-a4b2-b310456833fc.json and https://artists.proofprofile.net/proofs/artist/7fb61f14-574b-4ec0-a4b2-b310456833fc.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 0x7563401479d51e87f6952e68c19d90bbf8985e173472da389667c8ec3dea833c. 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/BCLWS2401047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb567fe5254629634cf4178ca31ff71cce87ad828a25b36e8acb1b4b234050f8. 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/BK2242401491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6cadf81dca26d16b7bb05b8852d5bd97071df751faa8e050a9359dee1a8d86. 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/BCLWS2402546.
Botar Só por Detrás [Arrocha Rave] (feat. Skorps)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7dbe41b6cc1463383cf846ec8f68e46aff057ba3cfc50a121b51a2099be576. 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/BCLWS2401836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23be908ba577c99f685c669d14c3368e52ec75f0ccd6e6d601c8ee56da9b6761. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USDM32462302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba046753a70d86326b357f3eab010780999bbaf266d3b62238fc8e4aa778514. 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/BRQT62400012.
Esse Baile Tá Bom, Tá Gucci (Arrocha Rave)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6bd374b6b005549c549a074ce97dce8f801856fa774465fd2d2dd949cf8c95. 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/QZ5AB1609785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe793acdc725a9f8928809e862ed41439394c4e287c906156d1af75905e22543a. 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/BRLRE1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce69937b4892c0cda85eadbabddad48134abb127dd1e9ff32fe0fffeced6aaa. 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/BRLRE1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc94371d9ca2d67860d525bb9a4400b8a3ff1b6f5d16116655e1c105d817d2b. 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/BRLRE1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa823d84ce8b2195b73efbf04e22b376042f7f9929bbf35f922bb3ff7886e9f98. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/BRLRE1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb7f5f64d279c04b2bb22d6a25d85c87e06933b5967fd1379a0f6ad7e131058. 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/QZMZ92499427.
Quem Perdoa Buraco É a Prefeitura de Cuiaba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf71d359ba0c46a2d3c0dffeb151b848839ad8cd42da9d57235071351aee744b. 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/BX5EU2100127.