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 0x051d617ce3838ef85ae463da3bb66d499a138a1d3dcf50f6ee9cfb5494593395. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29eaf2d9-e457-44d9-9857-7388d7d67660.json and https://artists.proofprofile.net/proofs/artist/29eaf2d9-e457-44d9-9857-7388d7d67660.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 0xa68371a8097ce0f6dda1f3bda0c867222e41f55abfce024495a0192a55e957d4. 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/BCBL92301108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db016e9789531ab811966c89e437655735e4e784b29596cdce76eea61d2f456. 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/BCBL92301106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ad7112a5bb9a594129e4810b7de959e93e0585f1eac1b16c4260db9991e190. 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/BCBL92301102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f7e7aefd0164d7d434000e1a74fdbaa8c8068a19a46db001534b50b70ba186. 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/BCBL92301103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68371a8097ce0f6dda1f3bda0c867222e41f55abfce024495a0192a55e957d4. 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/BCBL92301108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9f634742445dc48723fbafe5ff7d81c96d3c6b2d7365756236e28ab63d1ed8. 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/BXKHG1900001.
A Alegria dos Dias Dorme no Calor dos Teus Braços
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fab71746d46300a6491d7b02caf2148ecf727ff40c1f10de6353142953fdc2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXKHG1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef6a99e35c4ef18209317ec890d600a7e839e91b01128568fe86d61f012ef72. 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/BXKHG1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6cc1e668eb80b47399ea8cb59b8634ca28a16793d1cbbec0840b11f5626163. 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/BXKHG1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8722f02a80fe7efb7f095d43c8357935632f5b9e25157a89e69fc8bb160b22b. 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/BRLQ41700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db016e9789531ab811966c89e437655735e4e784b29596cdce76eea61d2f456. 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/BCBL92301106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f7e7aefd0164d7d434000e1a74fdbaa8c8068a19a46db001534b50b70ba186. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BCBL92301103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bb0d5b3c96c716965cc85b61aedc2f126f396ddf20ead9b04c95202c46f64d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXKHG2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fab71746d46300a6491d7b02caf2148ecf727ff40c1f10de6353142953fdc2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXKHG1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5997b030fc25c8b9f4ea95b4215e21ed0599ca84bad3ec42a8a687783801811a. 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/US7VG1772557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb353447518d69dd11ab835e3dce52ad81edabc70ecbd6f451e516e10962baf11. 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/BXVMN2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9029c2cfb4cc48522eb0196080d029c99934e335019a85e10ba74e5b2ab6430f. 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/BXVMN2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe485f8a69245f3e7d203be4e6357cd66852f7579014508a20c3b2c618f906274. 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/BXVMN2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8bc5a472d381b7a61294334fa8981842db5b7288e03445e243fed52d9e645c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BRRGE2102243.