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 0xf21f020850c5c2f42651c4ee1f1ce1aa5214f0ea85041e5f0bac132b81060c7f. 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/13b06e76-2927-4736-b3e8-6cbf3928c443.json and https://artists.proofprofile.net/proofs/artist/13b06e76-2927-4736-b3e8-6cbf3928c443.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 0xb7c0333a25321dda9d340ac603ba1364f5833927cccc67092e167d2c70ddd061. 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/FRX201726805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87798727fad2fe48718064b55bac514de5c9de1efc34323fd4c2ea65f0024017. 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/FRX201726806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f6cb0ecb09e36e00bb6888612021ab3d3a4e4dc61bc40ae3ec9ac1b69ed755. 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/FRX201726807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9141a1a91d1b4f52f02167f1683d368dc763ac4d7a3eb2098afbd3061fbf4d6c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX201726808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f550a48b3a93a3d7d90212a887259ebddd963be2da64b3e45e260e3b906ae3. 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/FRX201726809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe14d95209a844bcbd26dec841df91c5fc1def2c08d4c52f38a793c32985d67. 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/FRX201726810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b2cdb5559336a47cdbd28c2649312f487f697eac2a0008e851bcc9dc0d448a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX201726811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b740c90ef08c063243134639b4bc70129193c49539ea40262642fd64893af4. 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/FRX201726812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc275b7d428e80baa77584cec292a02be64e93f80b3c1790e7a0cd5c63310214c. 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/FRX201726814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb068821c9436a15bfb9962d37f2781b5000fe49bb9cd0626da130470b1529210. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX201726815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d28b921de4aafffc969c09fdc601a6682ec6998414b5042505d4be2e1760fd. 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/FRX201726816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedeb9e5efc8f5ba73a4ba7dced782cfdc651fc7c48a6d444a274c50dc9c0d1c9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX201726817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8797b9b0d63db57e8084f89ff2cb626a2259ee08a54079fbe3f28db3543370a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX201726818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4817d35c3b9a138af32aada0c961a145d0473e3becfd7489af23219612781fa1. 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/FRX201726819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882a632f2bb7a5bed2eb445fdb21b8696c148d3c0fd4ba6dc629473b2d579c5f. 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/FRX201726820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1117565d230632f9364ee0a7a276f88cf7c4fbe48fed2b8235143d84cf7301e2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX201726821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfc4530a67f0eb058453d7f38cb43b6468bcc44b3c5a5256b60938c42c8ca18. 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/FRX201726822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ef150c4e455963d71cfaf6dd8874598353637e1bc97b28c1ffc6f0a43e8c4b. 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/FRX201726824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b29cae7cce8706ea870f3ac9f76180b5796018aa0c94c6ddce0cef7734f635. 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/FRX201726825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9d9abd05324335e4671f52cf5a318a9a646da86a24c61f4cab94c07bed84d2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRX201726827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7718e689dbfc72e67af8ae33e155254dd6163e45b9cdf04c46f82f42d72c0dc. 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/FRX201726828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aba7640104d12fe9452133d90a4e858534278f29101a3625ee20a8d95c901f1. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:47:27Z), 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/FRX201726813.
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 0x3493f8d09d6f3c594f66be85104bf763a37bec136e8fda81e57aff2e429710b5. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/FRX201726823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21efa6277194de454b135b8662300aec33a4ea8607d7c017b6a34fcc2a4bbfb. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FRX201726826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb38415683371167fa8950cd63740ba1c1d56b3dea9b4a2203bcc8bebfcc52b7. 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/NLRD52254683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb765c99ebadc995994501a5a26fb4c35ade6370a0d6def86a61bcd520c6027c. 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/NLRD52254685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60d4cfb37798e30b893acaffa48accc9605e0ad0ddfa294f6c70929c98b2055. 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/NLRD52254688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5bc0d48f3ae749bef070f1be9da07ec5c25491e9b6003c1745997da92aab27. 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/NLRD52254689.
Pot-Pourri: Encontro de Poetas (Natureza / Mourão da Porteira / Cabocla Tereza / Pingo D´Água / Meu Pedaço de Sertão)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bf3c353c152a558a4743620b225ae6dbd9ed86d842063751d73928de4ec0a5. 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/NLRD52254691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45938054103ee705aa37b6e017ff09209544b60e4c7151cfb39894883cfafd11. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLRD52254692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dafd026a9d6fdd38d41315b402936f61cf2a577c4078a1cdbe59cf136baea1. 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/NLRD52254694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84264abf1126c7fe9f61b4e9a7d8b002962613dfbb77110090548d7fee2705bd. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/NLRD52254684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3686b1a58d6c6e07733a23baaebedf51cb97193a8673fae5920c945fadae9b5. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/NLRD52254686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1776a051099151fdca99a525d6d2c97ec3d1052c544276056fa45d64dce0a72. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/NLRD52254687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc714a9bcd32123bce23a05955f4be6e1e6f458ebbe589720964981ac7009def. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/NLRD52254690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2ce3761012cee45a8384693a2ca1505030ff1232ca48fcb84e60d2e48ac86c. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/NLRD52254693.