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 0x5240e67ecd830222d94b2d8717cdad6f609e7804fbe4af8d17bf4b9727e444c4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dcb255d7-6614-4668-840f-73e36d6007ef.json and https://artists.proofprofile.net/proofs/artist/dcb255d7-6614-4668-840f-73e36d6007ef.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 0x5cb494b0a0658c97bd01bad727c6b55c3c29cacf33132c3e2562e828843ecf10. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ESA112310809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8094c68fd64b72ff0d0c8a70bf84485099485bd99c91bd107ed20ee6cf27cad6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ESA112310810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f7868e095176b4169ff75e1d325ad520bf59f16af61062783a1a85113b2b90. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ESA112310813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99211f0419def52bc18b18ded726039ab79e44f7e5bdd2dd4f79d0f2599cf9f4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ESA112310814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28452a315a36382f881cb153109c839dd0502f78fd3e283e2e1cb8e0f38d84bd. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:27:57Z), 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/ESA112310815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c48bff4ddc8c271e113e92067d117de9f3dcfd076fb290096920eaec406c18. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ESA112310816.
Virando Litro (feat. Galeguinho Das Vaquejadas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3015a1e858bc1a0f68e5487a49024f15082e433adefbb4133976961e185d30. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:20:38Z), 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/ESA112318466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17b28e52a539252664de59edf9525253f726a002cb325be1683b2580b596208. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:51:49Z), 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/ESA112318469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199221fe5e9f196a223d382b1a413c0b10c609e6acdd5b388434c6bf519df091. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ESA112438186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa045960181d1b2cd0ae2ad62af4921692e78a9ef432020b95183891f9c619e94. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ESA112438190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4351319925c79f75dc2d4f4bf37acf605adba6ed2b872c188aae1fa4a927b71. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ESA112438195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe9489aa6a2d65cd765d15c1848d574caa7c3c917801a3a8ae0a57e32f165b9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ESA112438198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9157d32ef31b2d9c602c13966d2c3f7438b9ad5dd27f2ddf5ffb2aba1f219bda. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ESA112438199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126ed121d81c7d9aa4903f1487572d2846a773ba095c623adb04ab6bf921d536. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ESA112438201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda951c1421ef19893a9c3b72a463c206bc4b05680184f2bfff92cae444812d8. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/ESA112438203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4eb480e5202ab9fbd244b240d340c0f383ec1ec538c0050f30ba76bb69532d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ESA112438205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0adccda11af9512dcd5d8802e763c8e4ddce40ca8c9c802e483ad45b28fd0e1. 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/ESA112453647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf354c00b509a5151fbacf9120712504fc1b8c67e574c0285ffa3cfdf6807e91. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:06:24Z), 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/ESA112566472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e40bc08e2bd1be5086ea928a72f53eb3c6666693ec7fa0de13ccf34196f4a84. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:16:45Z), 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/ESA112566473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd6c8094eb0b600a916c144f5c6d3982528d068ac5d2a5ad916604bd26615ea. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ESA112566474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7a8f3525ffe8ddfa99b9f6b4178e9331c71b89c4cf06fa86422cdd315006da. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:09:52Z), 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/ESA112566475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bd00d6befd4b9bd3452c0145d30a59ed728bc62f164fd176b02e523a39cf35. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ESA112566479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f2af28ddd6f336841e35b0de891850b47a7d1006d1c3f2dddf5ba130874391. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:04:36Z), 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/ESA112566484.