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 0x7ea90c3d4e59f92dea1297749a29105ee8b3679d41194c2a8bd65fd31e550103. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21d14d73-e546-479d-b67a-36cef9857b36.json and https://artists.proofprofile.net/proofs/artist/21d14d73-e546-479d-b67a-36cef9857b36.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O Viajante / Sorriso de Gabriela - Single
Que Vida É Essa (Que Pega, Pega no Pé) / Fantasia - Single
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 0x81478cd327d748095884e521a1c0ded9bea87118f02758d52568ec9a91660052. 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/BRRGE7300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2654a250657a1bd37ff58a586134ff25603154f39c36a590eb20ccb4bc2f54. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBCLQ2200509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c81c2aa7bb8d7008259aa2d3de39a43f093b521049ff4c4aa7572ee0550079. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBCLQ2201274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f22a8ff9e376d8a72a4bcffe7932acdfe1406dcf45837544d935f8c036d8493. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBCLQ2100262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44a41f3549e26bcbea29970862e60e62669df7688b763dc4ab04b1a273f003b. 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/GBCLQ2201275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161c021c8a4866aa8dda5dec2aef48c1602cb057b25b9d2a546afed7e90c1a8d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBCLQ2100286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2722a7f5508b36d82493f0fd439e0259b7beb7c9d13834531dfbc151c766b7bb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBCLQ2200513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c114cce0e3b1b213ad7eae9881508d7ee0eeaafa7e14e4fb2306eb088f22129. 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/GBCLQ2200515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c31449d6df02d65758ab4f905191f8fdd13893ddfb2e7a9564d3d532ec7c15d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBCLQ2201276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42030547422bbb978a47337cdfb6f36bc893c077053afed4e8b37ac0e6c07478. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBCLQ2201277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72de5b921e90b2a12cc13155c5f67faf656943e11dd146837081846c6c333ebd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBCLQ2100263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb722e048d9fb3644bb2f10e9fb29e57457a19c7e19f6974c391d91e43110235b. 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/GBCLQ2100269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3bdc9934919e848ee30b9e8e7e6a214980afdad9d74ac0cb592fd489b7927d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBCLQ2201279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60865a0606525794721bb45e0fa14b4030d076c623d35949b3c1449b8ec2618a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBCLQ2201280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f463efb099e15f2318c787dbc0a872440b236d34a7a141ec875d9c1bad701c6. 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/GBCLQ2201281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251c2b7cc173142a9c33d4ffc8a30a9c9fc5c0f670fd0c05ef926514ff96564a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBCLQ2201282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca39d1310a5276c99050807348f823099a0c054a3383a83c1dfeb04bcd567e41. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBCLQ2201285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48bb269dc315aa80e6399a93b703be5213d9374fda2aff8a94d047603a8500e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBCLQ2100260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731da70339bf20f88eb1bd30fa513719abf735bf46f917891b729d9715cbda65. 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/GBCLQ2200813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9f54a93c8d7036a99047e2c9dfc3da101f906140e91258711f93b704feed98. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBCLQ2201286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4eaf94fed50ed508238db91b87cc21e9770352c2ae93108d8d4a2b8b0cd78c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBCLQ2201287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a7a81bc32095eb840ceec0909c618214f35f27688c1747830586fa14ccaff1. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/GBCLQ2200674.
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