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 0xca60129d4eb01ab29626f97c81848432c22fa497d885eee78437d95e2787c135. 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/a41476fd-4cb9-4bc1-a212-d3d5fbc2c704.json and https://artists.proofprofile.net/proofs/artist/a41476fd-4cb9-4bc1-a212-d3d5fbc2c704.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 0xf7d9c90614ab118891fb97715a535fce52d8e173fd8b2f4bc85e3711f756f811. 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/BRACT1603580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6638f256dca49ba0fd6c4fd2c479e0039369f6a3ffbf9f9ad3fddcf1ea7955a7. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/BRACT1603581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffb2bfacf6b80daf6c48f6a9acb7b8ad91814a65c7d6d5e042bfddb19a89378. 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/BRACT1603583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360dcaa646223c1d75c1fdf10492e66e82da4f2862130879cc60bd56900fee64. 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/BRACT1603586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d100de0bc20fbac02a6c607fe71dc056ecd72335a05d14aff79dd4eaf485c8. 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/BRACT1603587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf40b0097c61714bb20498e9d56237b9071d01378d95477a8c4503f8f6699e2f. 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/BRACT1603588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2655146036bc9cabaf87ff124be687f22277e6438e54bb7347fff1afe1fde86c. 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/BRACT1603590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea0e85fb8ef5cd727cf99effd3fdf2339feb6310ca8dda96b1ba38f702d6f84. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRACT1603592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c594f07edbc6bbe5ad9b009667fc69235f6b767be89de1bcb59528709796f4. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/BRACT1603584.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000a0e7e5681fd5721b4faf5644cff94ee82ec81e956f830d0fbea7dff991f33. 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/BROYG2000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d9585738192bb7c0fc5ced132cdd6aa7c4a0490601674b2d807d840c2461db. 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/BROYG2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d797a8fe86656faad519f7a0d0c7c351768d0a74ad7159314197dbdad06f1a8. 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/BROYG2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeadb3db35bc2b55a0320e1a77a43997360cb94c9a7604daff5e0ea13b0d8cca. 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/BROYG2000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527d2505b7c71ee4e75cf2c1e1557e10977e9a25e8802d5ae26446fe9020b53b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BROYG2000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83baa9b21538af1406d78ea3c185caa6fedfc7ab2138dee5d2207d6cb68f3f2b. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/BROYG2000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75f32280ee7cd42768f0c0df1480b606dfffe7c7086232a27b000ac991213a0. 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/BROYG2000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2825d95779710b80e45265a1dad47b1c7ec8ff622be07c76595e1e9c34a9dd. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/BROYG2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69f147228c0316b61fdec6d11c245bfab5ab3d75a0b74cd1ca208bdf96faafb. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:50:28Z), 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/BROYG2000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22027aafe5546f2b0d2afb3f36a51367ae51447d1e7a0e93217efb35588d02ef. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BROYG2000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845510a608cace8eafbdbc11ec34ab51332a4021d5c2b9d7a244e947f5c2c072. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/BROYG2000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab22fc5c75040c936e98c98905d30299c1bfbc35c4fcdcff0092b8524c6b2589. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/QZMZ92074328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbbfa23e5e913130f3d160a85e65a5a42d767d0438382382f826f00d1c71c6b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BROYG2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef87caf02e5377e698a9ea58f349adcde4687ad7d97477853fc4cee4a7d8780. 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/BROYG2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37aadedf792d81753c6995023d4f4415ec884513749acbea871c2cefc3bfc79. 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/BROYG2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394f8090e45252a82fe0b55f731ece6c6362fe8c7cdda87293b95b1fe0f62e6b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BROYG2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b929555fd73c18043e8cd06fa5e8fec5ae64ab47fcd80127fb4a883ddf6fb47. 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/BROYG2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2374046dfd4cf10a2213f4d384388db86c796bc77166918e218898aece98d90e. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BROYG2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd036c75994b13037b3ffab3a46bd0fdc153ce43a587f0a7467927b82817dc39a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:06:35Z), 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/BROYG2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48ebc51742b63bb4bb6889bece7d32df33af6b7ae349e0701c2c565c48dd96f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BROYG2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654bb45828ac66ab89b6d632e8951533002d99ab3f78643ff815a7cc2c269fb0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BROYG2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbd8fdaacfacbb48387122a48b0d54c55f796116a708a5872f90efc6f7f1e99. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/BROYG2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1601cab57e26e8de4784817602379dd434deb5d2c6ed29d68b4e27f8fddfc7dd. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/BROYG2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc3452fe60345bb432cbd283f4a5a77cd79d6169c969841f46cc767aa173a82. 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/BROYG2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0150950b3e773ebb26e22d696fba04b7614d8ad5ca01f0a27e9c737146a175. 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/BROYG2000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd0af3ebdd652d9173b3f6a22a565131a10aead34bbbd597539f9549ab778d1. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:46:03Z), 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/BROYG2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e2ad2c642734484a20ffb0b09321ad4a672941b0afa1af96d3357a8023590f. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/BROYG2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f94336747468c5735e435296cc26d149ab68e3b0f3827dd03a15f9a92d9eb7. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/BROYG2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449d02247bf93d08104e39ed9739080932b1fb4a7d5a2c95db1a9849d06eedc8. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/BROYG2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd82a56c578861ba3741a063fadf0bf98a0c0d012fd1e8be32433fe2c01e2fe. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/BROYG2000018.
De Emílio & Mauro para um Destruidor de Corações