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 0x06c34f9f3dca910e2d2bfa87b7bb370a6c73cb3ff7cc40353105bfdb58c424b1. 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/58787acf-3198-4a89-85fa-d2c278808dde.json and https://artists.proofprofile.net/proofs/artist/58787acf-3198-4a89-85fa-d2c278808dde.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 0xd0265f28f3d2389693f78bb023be992c7f47d1be64d42b97b3970c972068ee70. 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/BCQ2X2300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5a4939299f6394e29ebcbe118b9b934ee84f1d83677c70fa7783383b10f701. 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/QZNJX2221377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37768af8cf0707d275f70ce7f496456644a00b7ce6b503ee861a09f2366c7ca0. 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/QZNJW2277382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c58165527135c6721146e60b84bd40cbd21236df15f8bd11fe3eac2400f055. 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/BCIH82201680.
Mc Cidinho General Medley, Pt. 2 (Ao Vivo Roda de Funk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97145a8f9f40b1ab51cdb739824228b0ce6507d1676002e7b404db0a6ec6c473. 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/QZNJV2248500.
Mc Cidinho General Medley (Ao Vivo Roda de Funk)
Mc Cidinho General Medley - Ao Vivo Roda de Funk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98101608c7738573e9dcf5141c79e5e1a79cc1c409b400d397c423c126a5c25. 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/QZNJV2247652.
Mc Cidinho General Especial (Ao Vivo Roda de Funk)
Mc Cidinho General Especial - Ao Vivo Roda de Funk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232c2085f2f7064d524d18dd4ab94302ddc6e3e2cc9bf70d3d5d127d008422dc. 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/QZNJV2268485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e738aac27039c1d3681ecbc5857da4251be6c7963f5e7d16bf70a161e2f4874. 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/QZNJV2248816.
Homenagem Ao Mc G3 (Ao vivo na Roda de Funk)
Homenagem Ao Mc G3 - Ao vivo na Roda de Funk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54fe87da1b934fc01cb91cd88adf56a1114f7e3acfc53e8e0c5f676285489eb. 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/QZ5AB2222818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa121563821818296c08d9ffce21d97dcaef150f41dd2b54ace2e2e8cc0e1e936. 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/BXKG22101541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb573767d162a3d86bd10a6999e6362db0a04c2313a09181de317e110383538cc. 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/QZHZ62062966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0d00f63e3f68d7eadaaa8a44c3e36a9022fcd305b7ac2fa0e42d40bda3878c. 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/BX2SM2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ef12f50dc76aa6d6979542ab93c93e136a0b7cbf230d14be98a241ec9ccdfb. 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/QZ5AB1958363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0d6cbb9ccad090befc20ff7f6f8f6ae382c3fc0fe6b8575df9b5b8126f31ad. 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/BX2SM1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2954e35a683205a599ebb485d646c8e1ea4650fb3b70305045d0d89997d9146. 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/BX2SM1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666378219c8f736545e8eada0aa787edde964404cabfe878da1c118e22dd9872. 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/BX2SM1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2ae145f95a4b1b68220de1f0c7ea66607946be5d724109629913a5a5971fd0. 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/BX2SM1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0278e2b8ae9127fc2e313c16e1d1602f2d1aa6a9f45212f52a268e06e8b11fdb. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/BX2SM1800003.
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 0x5298730d8bad910efd2a83ea20d1d65d7200d5d5769e16cfb4c30f19b36ad606. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BX2SM1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71dfefee8b12ae109b6dbd509f58cf7bbf0b5c5d8d8184ace9646748903ec57. 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/BX7X82100010.