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 0xeb2b7d85943d61aca9c0f5d0951651b2c7adee44b0b63dc0fc59e08f199e8e89. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c90ca3fb-a997-4056-840e-579090929e69.json and https://artists.proofprofile.net/proofs/artist/c90ca3fb-a997-4056-840e-579090929e69.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 0x63690ae72b238fe67523f6be566085bb4eb15ee6f6b6eb55e057f9c626551baf. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/US83Z2335646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d32d19f71b0bde7734882e8b495fb4cbd7becf68c0e3c22a2e09eb1fc5d126. 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/US83Z2485149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6c6a655275819eda24a252530febeb57bb138d47c070da1a483f7035fbd2d5. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US83Z2485148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7490218980431c4bdc278f0b0b31f481cae1bac8ecf3a294336aeef485eb9f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HUC3U2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45490f5b40dd5dcd6ee1ed679a3eea1ebffb149dc37f198b58da842087c2067. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/HUC3U2400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3193b99d55e964333bba9f3cf49acec9196c71ded7bb4b4d6ab410bed44a81e. 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/HUC3U2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0affa4393d3b6ebde12996986c4d5e728bb4dbd4b75cf1e505b65ba9a6d4f76a. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/US83Z2508863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b76abda244e6b96f74a5ac679c5b8722781ca4cebaed58b35e68caab5ae952. 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/US83Z2508864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8d2444cac07c696688c7e3a8de9c69345ae3c4b530c6b94e416cc54df77d03. 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/US83Z2508865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03403438b149f99cb5d1e8e81e9af7aa984149256be5668e05ab4c71b31841e. 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/US83Z2508866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65813de03fe14a6d3d2adca7bf486c5ccbc7f425a9f2b0b6139616e8d9fbb5c. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/US83Z2508867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e8f25f488369c03952073985779565351fca6dc61da84d8d128ad4724919aa. 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/US83Z2508868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a72801e487c2b8f65a11e74cb07ab4fad41dd91edcfbf43f929d2e93cadb99b. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/US83Z2416577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1eb4781cfc6785d2691a9ea36280d12c477dd71738c9c1da2ac1d478ba92e0a. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/US83Z2459039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f7204b0f99d586be46bcc4cd8ffaf3d899ac6d1523f7a03540847b1c9a59a1. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/US83Z2459040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338c420b1f58ec7893ee33e3850b6a8975f2d03e834fa4c10a210a0a845c9004. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/US83Z2459041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2977055c2c29b836774091a6d4c335a56562ed726326321bf587574d097ea0fc. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/US83Z2457636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24816204541eed2489920c128bbcf15992cbb6961301201f4273e03cc4346a35. 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/US83Z2345345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0fa9a214ffdc17e1118f474772ded6ec86a44067dc6fd22cb9be5677364db0. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/US83Z2324547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f0533fb50814384fb2c27f67d7f41e86981c8523db350dcb5aad3464106c39. 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/US83Z2320622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328b72240833996d91463099aa59b500bde6a56e77b66e848aae61bff02b6aaf. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US83Z2320623.
Her Brown Eyes - Contenance & Miles Away Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7c78443901e9cfc219865dc10c69f525183f448243ec443cc9c883e39867e3. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US83Z2303997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f20d64870995453495880a6a358f40ea0cac2f61996316fe0609f679cbbcfdd. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US83Z2303999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52da1b7800f4d76d8da426bfbc628c93a5897d3770d8d3d272e9af9487d4c6e. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/DGA052449798.