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 0xa8510e7d0a53059090612fdb44c20b643ef45a561d26bb5365c63bed5a359fc7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85af6b24-cbf5-4206-85bf-a756f8186fa0.json and https://artists.proofprofile.net/proofs/artist/85af6b24-cbf5-4206-85bf-a756f8186fa0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cantigas e Desgarradas (Ruizinho Em Lisboa)
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 0x48390c1ace72512f2b7392b8e76e1e9fa3a66839c93238c2e2e6c02d9ce96d02. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PTTO10746107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e5b3765929e4c5d3ca29af948ece452314bf473f42c0d63aecf840e8c894e7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:53:03Z), 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/PTES11202102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6c1562ac5ea1f9b552694ef727b6e8dc2379e0115cdf5e41e99da019332426. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PTES11202108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4a7a7e6bf8c25d9ae2859b5c3bd13926b027c26aff0068f62a447929250ab2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PTES11306201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7843ece22ef51e6b44d2dc9c91e4555cf550c02f922e461e1dd3e59b79c94226. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PTES11401201.
Festa Dos Animais - O Bom Filho a Casa Torna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e2938169637c4808ae646dd8949e3be419af0a94d0fc42b31108bba874441d. 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/PTTO11782003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce25209ffc535be54cf2b8746bdf1646565a72a80e38c8d9b5628b1fc2b884a5. 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/PT2EO2100296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f865f62ed0977a0b5b0d951076d9696aba396bf9a68c3000db2f2b92d0e00c5. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/PT2EO2100297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd572c341c5ff2c0f9319409e71da1255ab56fcc62c3285874f5afbeeb76f565d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PT2EO2100298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dac069f42ee40de6a9a652f0eaebf61b1fe159be362466f645b19c6effd0f04. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:43:52Z), 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/PT2EO2100300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacaa40fea062ead665f9daa4005707ac24cbd0defc2e66b3e10d6b28f1b26d2. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/PT2EO2100294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedd396721f6dfe3a853f0fa3518cf1f1338282da74926c55140d53f668b4bf4. 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/PT2EO2100295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce25209ffc535be54cf2b8746bdf1646565a72a80e38c8d9b5628b1fc2b884a5. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/PT2EO2100296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f865f62ed0977a0b5b0d951076d9696aba396bf9a68c3000db2f2b92d0e00c5. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:14:21Z), 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/PT2EO2100297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd572c341c5ff2c0f9319409e71da1255ab56fcc62c3285874f5afbeeb76f565d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/PT2EO2100298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa1ad9b2d304b4a46e21c55f03538c341f072d5fe08dbfd2b937eb3c82e944c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/PT2EO2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1120ad288700847b453966d314934e2ac619315515afd9d1313bbf347b1f5a. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:08:03Z), 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/PT2EO2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa1ad9b2d304b4a46e21c55f03538c341f072d5fe08dbfd2b937eb3c82e944c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:53:59Z), 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/PT2EO2500014.