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 0xeff7966042f4eed8cd90a7bbdd8ee726aac85fae726efc6610681dfef2610495. 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/d6fa2fe4-ec30-46f4-9311-b8b0a8f0c4dd.json and https://artists.proofprofile.net/proofs/artist/d6fa2fe4-ec30-46f4-9311-b8b0a8f0c4dd.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 0xa080ee9642239b30e0fd8c728159904dc1e33e9d0cbb0304ff9a50e85243e37d. 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/QZES51994500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe380a699437cceff693d84674a1ca04b0b5363834bfe0d5290c4c6f921e531e2. 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/UKXN22071284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ddd9c50fc934e909b678f43b3fe76e4c557a3e1958766c039e2aede4072c9d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBLFP2157707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7524a7750f576a296e5e739cd04a1813b8b9f24a41d0df3d8b8fd0e189f2e1f1. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZGLS2104059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddff3a623eca55741fd8021dbb1a2997108bc89add25dbdd214d2569cb21abe8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BCLWS2100112.
Uau Uau, Elas Gosta Dos Que Tem Cara de Mal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2ed11de83e814362795d0a551e74e419c5f68e0aa5c239cbd1c6724dbd03a5. 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/SGB502240026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799e73c4de61926af4a332bdf44c878d79d7498e2a8be340c5c17f0b76c9268a. 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/BC3PG2203517.
Prefiro Sofrer, Mas Não Volto pra Minha Ex
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051d657246c601f76742ae6593764933dbc7f2820028067de9dbd28a72d4147d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BCLWS2301174.
Prefiro Sofrer do Que Volta Com a Minha Ex
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92bacb7bb10855ce0ea9848a7b40dec9b2e7ad631681804dbf666a32390be57. 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/BC3PG2203436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb6a6231b6b394dd7eb97b902f24bd3efa8d069475e7422f41129614f3bd08f. 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/QZNJX2079095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac7fa1a9e3a67c4d78605c8a3768b3a22697d52ce222cec653412b120f72591. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BRWMB2300866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1690989542b7588265ec041b2f368f19ef6b63f81c4b1692c81ba85a4c456479. 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/US7VG2447340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac7fa1a9e3a67c4d78605c8a3768b3a22697d52ce222cec653412b120f72591. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRWMB2300866.