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 0xc6f835649aa4b7d67a6c32edc7f7fb88fa74c0d73db4aba61377f4a9068f0533. 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/c80109fb-775a-4461-a0f6-feaf94452989.json and https://artists.proofprofile.net/proofs/artist/c80109fb-775a-4461-a0f6-feaf94452989.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 0xbf31d6df180c5cf1583ddf3fc3dae39af8eecf49115ea3919a83af7d5ba17d89. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:49:42Z), 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/QZNWR2188488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c1fc3b7eac6b602dc41b214c3720c6e61b11c209719fe8f5eed4a8b431d8b5. 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/QZFZ72342299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd3f17aa0b64d39ec83a39c1cd97292af0689a53672708910b34b7d5e2690af. 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/QZFZ72342300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843517798a8d467ecb9cd8c6c71f56b216436f9812b0f1158d4419c54ab48148. 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/QZFZ72342301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe093bf3e44771bfe154056a7b34098a9b4d3ebeab1685d1115f46beacbc30646. 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/QZFZ72342302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9cf350b2f7dd0239f8c561b956852d857bf670e17a1bd62eca240d87107c2f. 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/QZFZ72342303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc112e683f4459c49bed8b7188a712a7a2b451f995b336085debf4e2b1393db6. 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/QZFZ72342304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4012246a7d1f29b4ebc05749f2e73f9775d67f77ee332d6fa8aa2282e93f6633. 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/QZFZ72342305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d203ecc1343e578ffc43f861bb35327622e4562922bca9906d1afda27266b42. 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/QZFZ72342306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba13db075367272c47a3215711f0a9c99ebd37f4e6df5f435cf22d7b12e28535. 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/QZFZ72342307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc933e363a03b1be9b2f666eb1d253a69a7827bc3f460ba900ccacfa169f234. 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/QZFZ72342308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad2b88998e724725d1f86e45833228da33e15727a82634d2991e268e8eec819. 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/QZFZ72342309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9774e4647ca7949172dc7909319378f3771ef9a497c4cda1348f99cc194cdf46. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZES72314682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedeb8b1a9acf7de55926d6f28703b26e5305bf27ef98c8e8ef6c0c4c9c2192f9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZES72314683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3251e6676b6edeecc8b1007383a3d8a8e17f32c3583201b28fcc83d4e4988709. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZES72314684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763a8873740efa45ec740943794c40be584282ab07c8c5bae3897a616c019601. 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/QZES72314685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0972e433d7eb7be218a0fbcc0fefb544a2859b6b464af0d587b11a5c14f0fc. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:19:36Z), 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/QZES72314690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c6fa3a16830a49b4a2d8c668f28acde5fc1d390e73dbd26a98b3f68ab981a1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZES72314692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21de38b21f42da1ace8c2e703d35ba7b1753b5a5fe4892bb6c9a8b6839a7f3c0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWZ2326398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f30e059a81e5781acea0f90f590f2824228c50a9f00ca9127bb1ae9da2c715c. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZWFM2341781.
50Thousand in the Room - Prod [Facy] & 1man
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe606aad47e83964599702ffc4afda7a5eb9b59946029a5b71bdcd08f0e6f5203. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZWFM2341786.
Shangri-La (Poison Pill #1 "poison bug world" REMIX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbf13c44709d07728d256b98ff57c9f29b7d6f3b0f7947ed16bee6e606013ef. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZWFG2584039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903722883701e08840e4021f0313948f10c8c322cc7b3cef587f4a8948ca319d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFG2581873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2469028ddcc0434b138e8d4c9410bfc4ac2fbb5b2020c285bbe42f6c4c8531. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZWFW2523668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0d1c857fb0f32a42e4eaacb5414d2ee97771b793fab256d40518a04e562bc2. 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/QZES72405818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac9b0f6be477b28423c53c595199428eab30f82a22ab3ee6dd9dd8694d0f313. 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/QZES72405819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a935567f701353b7de907680d460b50b7177bb8e511861175ea7755291ebb86. 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/QZMHL2381443.