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 0x395c8979147aaa3a9e35bbf8eea3b35474291c29860bfa0b4f7ba536b9d423af. 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/cc8e3da1-9de1-45a1-93e7-47cbadf87fef.json and https://artists.proofprofile.net/proofs/artist/cc8e3da1-9de1-45a1-93e7-47cbadf87fef.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 0xe3cc28a507cf0dfc267d3e616dc5e99f0e9a67f29f82a1a4cf5f4366be223ee3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ITB881800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b0fd3b3926271e25ac0a9a65e133edde9deb35e1492d9b22f62b5e42c6c2e7. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BX4E52000971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfb2e5fa8bc6710b5280ba56f33d20428956de0fa3f77728f5c1307b8e6c908. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BX4E52000972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d129fa2fea722f42d53dbe8986ea47b934932a6fc84886d8619d7097ff115f. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/BX4E52000975.
Gibão de Couro & Leandro Romano - 15 Anos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01f4fcb04abd650e493944ec38a1b2d5b0fd06d22c74effdf42207d669aac15. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BCGFU2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3ed5cb1934af06b171c824bfc31802563c3efc42cd20ba68886442414f6004. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:18:10Z), 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/BCGFU2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2394d2a70c341ff08e4cdbdfa206862d9a2a63d818bed23b4db62fc9f3f67280. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BCGFU2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbbe3faa67afa76b8b335c81f8dab1a2409ec58cc9bbe045333ee70577f15bc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BCGFU2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b73366e84e9155cce1dca96a0df9bc02657b43ed6cf7e6a7a4609996c08ed5. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/BCGFU2400017.