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 0x3878004707453590c7c6a7d129f011c57c8bd7d7b8e223e6cf1f649fa83d170e. 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/7091400a-d2d3-425b-a5cf-5dd2c62597b2.json and https://artists.proofprofile.net/proofs/artist/7091400a-d2d3-425b-a5cf-5dd2c62597b2.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 0xc508de41b80640a8baf814922f42197c3f3ae73b58a4c5441e1291cbeed541cc. 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/BXATU1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781e13b7e3370970460e7c42d33a522ede9a72c85ecbdbce0159ef4419dc520e. 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/BXATU1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23cfeb247f8c46791640f61785276271aef5737abd1496d5cf0d121f170360d. 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/BXATU1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027a2539180e41d5d4f18aa00aa3aa53da013854e93f1921b2f3382c7a6dc094. 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/BXATU1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4856c177802adf8927370b26f8e2247f3eb2ac30b72b9146c2c6d70ab45be43. 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/BXATU1500006.
Rainha do Mar / Sabiá Cantou / Sambas de Roda da Bahia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b997f7bbf4502f22f7de35b58d71b73de33cdffb5ebed3291a32563ccffb0f. 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/BXATU1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1633ae080ff9ef5b5bc5dedddbbc3c45b0bc3431c6f5389f96727a745298323d. 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/BXATU1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd746b4dd2656aa67eed639c3784336832579368dedca6f4c6a0506f61a5b08ce. 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/BXATU1500009.
Axé de Aruanda / Tem Tambor para Tocar/Bambeia Malungo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a5ed6b1bd1256fea44e8bc70b91d5b7630ea29f6d9f73de6903c8e3d264a71. 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/BXATU1500012.
Guardião das Leis (feat. Afoxé Alafin Oyó)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c05007b3b5f7db1c8a15316ea12195f721cf927753bf0f0551f108442055a9. 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/BXATU1500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399ab71fdd28ea8588fde3bf5519a8207bfe8a3b6743c8ae47fd324969ebfb9a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:10:22Z), 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/BXATU1500005.
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 0x4e887851c194997436ab138afb573f9d2b432df3d2c8a788ba23716c9a43905f. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/BXATU1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82b82c1cbfacc78bf33ea11747169933a0649c745f67cce2c469765743a1505. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BXATU1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf28fd4e2a7aec8ca0fc4f04fc9cdcc97cee4618435cf071c872c93e2f5716ad. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/BXATU1500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e3cf675563d750a1e0badf2c075e8ea57afebd6cdc58f7e5bb64d40a4d7326. 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/BXATU1500015.
Brincando nas Férias / Glorioso São José / Boiadeiro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bbf0dc5be5d4c03cf2487e79d0d7735e35f7ae8fb4cce0aab9b17a5fa622a4. 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/BXIMA1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d2319de0d595bfd34de5b50527596104eef5f7eccf20fce19ffecda2248a07. 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/BXIMA1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bd93d58833c19cd072b01ebc56ce454e2e55bfbc6538fa14d899105dedc2b3. 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/BXIMA1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9d436d5a3531753d7e9ad0bdf2dfab8c30bb95bb9675fe417c731c27277129. 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/BXIMA1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab451cac0f22f5baeabeffce5a2fb7206fd31f4eca1411ab02d3656627639f5. 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/BXIMA1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc275cb98b4776b02294e3e2ac49a62c0e9fbd3a284ec39b033c1b424bb53458. 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/BXIMA1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97dd23662d2a24ef5315a23394ddc07e2c3f459fe8a3a4ab582962ebde7b6650. 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/BXIMA1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cd5ef3663ae7e813da30b03bbfc4f82ed9d7b0e95467019a8d3dda1fd86444. 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/BXIMA1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4186900d606ccd7ac6957f1d9b5eddb7f5366cb2c926b4a5cbc0e2ecc1cd9b. 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/BXIMA1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b6814e653caf859ff107f5576022f711487140655cdc08d58c555eb3ec68fd. 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/BXIMA1600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2347c93e373017538b8bb4a465e2e3d7b16690a7065275b272bef64c049a342. 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/BXIMA1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ab7734f39f8be1e886452e3af8d7c328d16457db7eb0884d1a168ff932c545. 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/BXIMA1600011.