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 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 0xcb33f0b3175a89fab8d8b08bee95d6e1b019deb08f56489a8fe0c8c83f9b3fea. 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/d367da43-f990-47d5-a41e-bab97ec1d231.json and https://artists.proofprofile.net/proofs/artist/d367da43-f990-47d5-a41e-bab97ec1d231.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 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 0x39949caa08fecbc64e8370adec3924f4e32ef3fa909e5fdb784271dcb1b52fa5. 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/BC3PG2401795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7481836fb618ef105f033837db9b796cdab071a638f6a00b22e6a9353ba0da94. 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/BC3PG2401796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72aafe184915b031103ddcf68439af06750772fa43fab7f670d424f07268424. 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/BC3PG2401797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0298564e73e6ae70fa92c0e4cf350b07fa2344c48227db9377fd7efa4767c03f. 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/BC3PG2401798.
MEGA BOTA A PALMA DA MÃO NO CHÃO (feat. MC Hollywood)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b5a468376a778c084be53de83b647bfbd43029b150b3e7ac8d55f97d05a3c8. 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/ZZOPM2231147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d99dd14647dec8b5bc7bd4d964f079ce349ef9bdd5497f3c45a5a73ee9ed0c7. 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/GBMA22418376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a9142011d4b56749e46072a7adedf24e5cad1839fdbedbc0ee88b1be150f77. 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/QZTPX2459512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bab0e2dbf2aba22e122fc19735927ea86768499891b2a7b30821f0c1d35915. 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/BC3PG2401629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa02526ac2b1dc64905c50aee9651c7b69e9af6f35d0db85ebd86e4a3252f901. 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/BC3PG2402228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739ade3ea6fc64fe0a8678c63f57969c1834a10b4af68e43fccce7cd63094d01. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZNJV2458026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0306f9717a10d746dfbe208a220d10383fa89f6b8464ff462c6d793e39c58a81. 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/BC3PG2401406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ace4a0beb8c0773465954cbf06d4fce087dfcf79f2a14c9efdc5c999b31fc5. 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/GX53U2309537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479b62b17310c1895b59b5495ea622a9dde16aff7cdfacbb4a5e41f2c99aa6a8. 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/BC3PG2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9679f7c63cfca4132827342ab87281cc430fb21c32440a27c8d4b2ec27327550. 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/BC3PG2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d375ef83c4635a6a42fa0e3f5db6bd67afd2277ee01bf5b5f21536f19dfe92. 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/BC3PG2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfd106a046f3ba217a722215229bd9a511841198dc664773eded389b63d135c. 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/BC3PG2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4fb7f3df03899a5b2eedb29e1b7d15ed3fe8da18896fc186dcf45aa118d995. 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/BC3PG2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2772a5d044d0b354e4041fa1ea55cc0316311dc2485d58878f4753da0d72211c. 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/BC3PG2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4da569337f49f1d3cdda1fff4d9ee46efbde2ad0ced116e6d9cbb9f97165cd3. 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/BC3PG2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa7085739cb645a053e745d837d7eff81e5f43eceafe2c6c03883d69b7dada8. 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/BC3PG2400028.