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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574221a70cf0834e9a35454abc9d5c5906cc0ba4b77794e8b77cafc99efa9afc. 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/a749bf58-2fa2-4ec6-b494-851f589c3be0.json and https://artists.proofprofile.net/proofs/artist/a749bf58-2fa2-4ec6-b494-851f589c3be0.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab9c2e0e590309e258dc3627f0329e944ebacc49ec11d16385fb671a40bdaae. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBTMZ2301194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8706a03b79ba664c4ad83616e5e1e270948c56f2256a1642daa5ef8f3dd9c86b. 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/NZAM02103707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac68670025e67f82c19b51e6e91fbe65ea5887160dac59d3dd5c9fc961e4082. 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/NZAM02222644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb69856216c328d786d44cfa17e40e17e1db62f3f90c1e5b0573640228e97b7d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBTMZ2201115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e39ba901e111b4c35992f7c6dbb6d7f4de6bf283d90a718f97cdb9f365b58a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NZAM02103705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d91d878e21f775d17794569cac45e992ee5ae940a0fcee0a2a70c26c82cfb0d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBTMZ2101067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b7fd1e5713bc181cacfc170b084fa83321191ff395cad9f87319235bac20ec. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBTMZ2101068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76045010c5f003a6599aab1a2a77a69acccff44fcdac5776ab101db53080e9fe. 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/GBTMZ2401246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42911b538a341b33745d1f7442938d34debbf8d32dd0a065db34755bb7687f2. 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/GBTMZ2201126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541c5e025b64a12399244c87ae57dd04cf6e7653ec508b9233990e088baf25c4. 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/NZEP02004255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e8e04655bb45c509258fa1ef346ef0eb1907963f697105b7dfa718bc33cb84. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/NZEP02004263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ba133e2e836d8a773b247e1ad7e7ffa29c48a12c00068a27e7700d87cbddbc. 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/NZEP02004264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6449940131a54ae16862d977f2b9c395bf70cc655319c596697fdd34f561098. 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/NZEP02104280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1b1ca5d74344137b15426ddbf533fd8667380d971ecfb799cf2924df8fd353. 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/NZEP02104282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa6c3822dca472ee91ee693bf8f84486d8abbc05a6c46366093a2b713168aa2. 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/NZAM02103704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e39ba901e111b4c35992f7c6dbb6d7f4de6bf283d90a718f97cdb9f365b58a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NZAM02103705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30fd9cf702bc69f36be398bc264564e5d485b597c8f91355df2acd9bb16de66. 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/GBTMZ2101078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f519c41461aa4157acca038b32abd4d8ea27cd1d43b3fef6011e20e3f49388. 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/GBTMZ2101060.
The Sound of Drum & Bass 2021 (Viper Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c5ed21e73b21715ab8046838969a88600c27fcc04cc5c32f921a536bf2c75e. 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/CA5KR2113990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f23b8d8513c6b930f27d9bb1b4ce9707ffc2014abada07eac97691452d7e5a5. 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/CA6D22100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d91d878e21f775d17794569cac45e992ee5ae940a0fcee0a2a70c26c82cfb0d. 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/GBTMZ2101067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f519c41461aa4157acca038b32abd4d8ea27cd1d43b3fef6011e20e3f49388. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBTMZ2101060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd8484e8c5ac646789c5df4bedfdadcad3090412ab574e774d8f766358d4d47. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBGLW2000571.