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 0x13b3b42fe4545ba609a274d876419e8e1a5892e339d8f88969f1c0fd4d590679. 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/4d111c4e-5a5d-4480-b904-71531599f878.json and https://artists.proofprofile.net/proofs/artist/4d111c4e-5a5d-4480-b904-71531599f878.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 0x6474c46d203a68c09df9978d544fac8834639542d2da211193b89d40dfcae640. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/BX4IU2414659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199841c5f15a3570d1d1c1d490fd029e2355faaef3b4d2fe44d47e9d0e23698d. 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/BX4IU2414660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec80190a6445f2877263952df097d9d8ec99b47d44a37ec97e32beda4c533b3b. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/BX4IU2414661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb679b3124c3edd5530bbeceddaa4f1e491dd0b449939e135f9c7a4a968e37f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BX4IU2414662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d97bbba8fcd5dccb811710acfa57f11f515aa615683d821520ea9514534bec1. 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/BX4IU2414663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a694b26b79b62bc95e0a405b4f40c26f53643d35f287d175bb8e3015adaa5e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BX4IU2414664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9779331e6caabce53688ef0aa185a42c3983d7d27ad02064209c9576876820d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:26:14Z), 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/BX4IU2414665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68e51a060229e9f17d9172d8e900f575c4defd508ee23c4f803a04a1843a068. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BX4IU2414666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6eb87da938b9b0164f8234d970741adb3def53fb9d240a1d9edf293e2c91d91. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:49:11Z), 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/BX4IU2414668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfafb73749454a6416302e184400d528f0aedae00ab087254437a9d9748d3471. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BX4IU2414669.
Forrozão Sela Vaqueira, Vol. 5 (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1b7054df5483c735bf752f2ae4b1359b2d935765a35f18c14bebec9355ff56. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/BX4IU2414671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ade89fcf6ad94a5a0a4b5c029f5119a2cee2257c65cf0a221b32e4351cb313a. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BX4IU2414675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200774041b46e751c7b594e92aea0cd4e9936176872fcda5ae802a13874a9410. 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/BX4IU2414683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc105aedbafb87c093b562d2c504aac9b4f4ddaf915c4c2476b13d15b0b6a32. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BX4IU2329226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164e6c7d39ed090eda72657477c6b05a62d624cdbacbe00297d4fab2356f4a5c. 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/BX4IU2329228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48edfb34dbd9f5cdb61f58e02112c77221c16e3f8f34bfc71df6621110589bb7. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/BX4IU2329229.