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 0xbb77c1a25ebf55c443db7505119676aec1d2babefa88ce47e2e0fcd031ec7034. 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/c4b9d353-17f6-49e8-b4d4-cbb7cafe10fa.json and https://artists.proofprofile.net/proofs/artist/c4b9d353-17f6-49e8-b4d4-cbb7cafe10fa.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 0xa690b8753d0122cc1457e5e2295175710039479ea87130d495dc22b872cf3883. 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/GBUQH1200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe954c844b7587b28571f57fe2fd1c892ecea39f03f8537dc5dbd08436c273d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBUQH1200127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0484353ca779009c77d74f1bc4f7fa2c79299f137008f97d5f88fb02129efc19. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBUQH1200128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9380f08932fa4ff4b96a819645a46cc9604d66560fcab159d84a03ec1e46db90. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/UKEZZ1820002.
London Luanda, Pt. 1 - Zé Da Lua Ulungu Wami Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd58273ca0b4e3686563b46a96cb6d42e9cc29cff616e5572fedacd2a3a4ab1a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITH641902680.
London Luanda, Pt. 3 - Levis Vercky's Meca Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e2bacd706ef58618e3996d68ce54bfbdcaf202abd8eb02cd37b2ce6a668195. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ITH641902684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd58273ca0b4e3686563b46a96cb6d42e9cc29cff616e5572fedacd2a3a4ab1a. 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/ITH641902680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88ef9cdbdcfbc7b7c2f2c5409d2c5078b1a4c7d76d34cac7d95355a719405f8. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/GBFPN2158801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf908bdf4adab980194d9072128bc8ab5ea8b9c9205c7b75f4e7992ee37415180. 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/GBFPN2158803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dccf9fb5583025e550dab11f42d3515311ad81ceb59d55d13790bfcc9bc95d. 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/GBAAP2300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bef5aa88e00b0d302b442eea49c664fb05ab2e038d44b0daaafedc7b4baa9f. 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/GBAAP2300329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dccf9fb5583025e550dab11f42d3515311ad81ceb59d55d13790bfcc9bc95d. 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/GBAAP2300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1b9df4d01d3e78830de94644aed7c230484754ced2efaa4ba74fe3e503f627. 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/QM4TX2505911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5457a94c39eb8c1b168c59647ca90ab1f0b85c07274c793e622aa79025fdc9. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GBAAP2500223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d92157a6513817224e23490759d6fca9f1455db3b6b4033c82eba4f977ed0e. 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/USSD12300087.
El Oro De La Tolita - The Busy Twist Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dd6b1f5866493d34b9066adae579a1c3f3b5d37c2d58315d32b32c79b170a9. 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/USCCW1610641.
El Oro De La Tolita - The Busy Twist Club Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321636b867575fab452dfba8707c3cab1f3219f4c0b6b62c1e3d44694bea3945. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/USCCW1610642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f400420c62cf01282d06bfc748b46806727378b36ebd22f0dc8040f5f4beb19. 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/UKEZZ1700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75ff2f6311b79c1df5cb2ead483646ad98c4326c7b8966235b5ba765d61218a. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/FRX452136540.
fabric Presents Laurent Garnier: Into The Low-end (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470136acd6249adedb18aede4f857688b8d96a8e48528e3ce0a2f6314df38402. 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/GBEXH2402071.
Galletas Calientes Present: Palenque Records AfroColombia Remix, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e650c27f3316ccf7149fb697dbb3f6ed44f39171e1ef488b8efd7157bab423d. 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/ITH641611210.