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 0x434d3e6cf20e46d5d37bca175694c647720787954a0e6cae327444f81cc8e650. 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/18ac12d0-fe9e-420b-a313-ae196d817379.json and https://artists.proofprofile.net/proofs/artist/18ac12d0-fe9e-420b-a313-ae196d817379.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 0xbbe65844e3422904ea1c95900092ea7c56397dbd8de9d796b1efb47ef35caea5. 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/NIKIT2101603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1a30621fd380d839a01c05a5c8cd32be42809c3e0a2a0770d617f0e9393c66. 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/NIKIT2101604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2075314f5b578a29e94bc36de4a1176c99472d5ff0f6ca9c930760723d4ad3b9. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/NIKIT2101609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9417137d6d5b641bfc62ae3c27eff4199be8dc48a45926ca0c83bd3210ed3f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRTMV0500218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5195c80a4a04343623fc3b2e447747dd0ceb7b08e5fe13d93ceb37ada69f24b. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/BRTMV0500220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfe8e05314aa0823a2eea4fb7eebaacb1821c7e33731287f3bac35acce78961. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BRTMV0500223.
Na Estrada do Sul: Em Santa Maria - RS (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc751a876b7f0cd7d2623cd58212b5c82b5f61b9edca2a62f566350c21d73e6c4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRACT0901004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf387d1d81065d1e2ffbcd0c43ee9b284ddd8895f4a840f27d6a8a3a1e6380b32. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/BRACT0901006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacce22673eba4b158dbc0d9547674535f56c7ab875e0134df933a54fbc93a59b. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/BR2EP2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c87ed454237c1612d5e307500a6b2fa69318fd8a24a8ee5cb8cfc7e2d24a78. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BR2EP2000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224681279a66c5f8047033bdec3864965047d64356f8221b706455e13d1f3d19. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/BR2EP2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9c7fa9a213460006771afc6e1c125c2216bbb0ed8cc63e6300bc7fc9d7de54. 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/BR2EP2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b27cb7784f129b03161d02dc71c7a92ff1f729ee31a761d121abc90bbc03de6. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BR2EP2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb32a92399f9dffa33a785b0aaf7eb351a1cb86961b6d70c3cf5bfcedec5f4f7. 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/BR7CP1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa374ca6f87cf225eee0d4266dcdcacc8243a0c1ca9a92845fd2c2811430e9c. 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/BRACT1100375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257214446a119d1bc3e536c0b9fc8d533f4eb56602db77959a832bfb19117f8f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/BR2EP2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd75bea8ca239498f91032d7cdab11df68b03c6de64d2bdb1356e77a28c48b8. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/BR2EP2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dfd75b8ba7fbce6e52e3ae28cc948f9e10bc3e1083489b62c146782b051edd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BR2EP2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6645cfb12b78fe5552c451ca3705966cf60c1aeac5c62d4e91976aa20e4fa021. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/BR2EP2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db17116fcb000d4ff345a1d98f9790a45557e947492a1199db94f798fcf9460. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/BR2EP2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eef640ef63c2fedd8064d02163cf070fea76b864de73fd63bee5b78a39f52b9. 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/BR2EP2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0d928d343dfe96d17806302abb74e997ce7320f54a4a14f51408ed9562dd92. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/BR2EP2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f52c7afc7f2aac359f236361d29165c11229567cef364cc94fd6e15f9a5e512. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/QZHZ31968743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207fb7f5282c2e9eb94d92b41942df0f7a30e57070854e824d0a6d844b511015. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BXDTM2400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54854569c43f102bc0a7df1a2a9a351098c00a92af3798584fa432729113586f. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QZW9K2376550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581e8c440ad959f8086c0ec02a6243ee60262be2692151d55d068d6f7a09648a. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/BRTMV0800219.