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
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
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.
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 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.
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 956790 (2026-07-05T12:31:54Z), 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 0xacce22673eba4b158dbc0d9547674535f56c7ab875e0134df933a54fbc93a59b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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 957919 (2026-07-13T23:58:45Z), 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/BR2EP2000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9c7fa9a213460006771afc6e1c125c2216bbb0ed8cc63e6300bc7fc9d7de54. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BR2EP2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb32a92399f9dffa33a785b0aaf7eb351a1cb86961b6d70c3cf5bfcedec5f4f7. 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/BR7CP1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa374ca6f87cf225eee0d4266dcdcacc8243a0c1ca9a92845fd2c2811430e9c. 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/BRACT1100375.
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 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 0x257214446a119d1bc3e536c0b9fc8d533f4eb56602db77959a832bfb19117f8f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:35:16Z), 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/BR2EP2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd75bea8ca239498f91032d7cdab11df68b03c6de64d2bdb1356e77a28c48b8. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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 958776 (2026-07-19T20:11:59Z), 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/BR2EP2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eef640ef63c2fedd8064d02163cf070fea76b864de73fd63bee5b78a39f52b9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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 958774 (2026-07-19T22:24:43Z), 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.