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 0x6a54d895da318355a5cb0a54a1f00d614cae0c0be0f66e1e752d0a6dda358bb1. 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/cca98bb0-8135-44d8-81b3-d6da5783a239.json and https://artists.proofprofile.net/proofs/artist/cca98bb0-8135-44d8-81b3-d6da5783a239.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O Som Tropical do Brasil em Ritmo de Arrocha
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 0x98371e45b6a9c725c50900e591856d27140a082ec711f3da5edb71a7fe6318e7. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BRTGM0700189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfacd232bc21287eae103783d70d832357fdd4ab6fc477186ef86d4a1fc1fe7b. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/BRTGM0700190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89de9d0971d725bdf0418d6638f1bfd080d39ccd11ec32c0609cb526fcf6efec. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/BRTGM0700191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30be217a082fddc5cecf60c691732658e951fbf2968608bc2f6f5bb1af2cfef. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BRTGM0700192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079a176fd2fcef184cdf67316d45113c4375fab7a32cfe28829b360bf42f2a67. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:02:39Z), 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/BRTGM0700194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e59fb52151dd68aeb0af8d8f011349f38cc7dbd0cb47c7bd2d7cd1fbc7c31b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZEQU2117601.
O Som Tropical do Brasil em Ritmo do Arrocha: Ok 2015
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de0f38e5658520e932585043d4ff7fa78757bdb1412108243a81beaaa808da6. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:54:21Z), 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/QZEQU2148390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30eb3678dbc078771d7746cb71ac98c3971af7f109922c658087ab8ce8a9e4fb. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZEQU2117405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741be59ac610b7b3b350e802705c8dc68ac74ed7dc3433176a46c323f4a794e3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZEQU2117339.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432613e8b4ce03a4474fae9963d5ab4f72df76568266dc60cbc523a601f39912. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTVM2529715.