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 0x2d4c210a2d21ec61fae1db05dd11ec9b48249fda27e39286b37febf9ea34656b. 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/a1a9cd9b-ac3b-4a5f-a1d8-13282e3babfc.json and https://artists.proofprofile.net/proofs/artist/a1a9cd9b-ac3b-4a5f-a1d8-13282e3babfc.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 0xbfeba52fb40d7d3a7982fc5b7874aeb23fa413917adcf087fc918ffd5f27e20c. 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/DKFC42400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ac7d9a3a7073180a457861a636cd32d7964b5874a55ffa7e103ed415e5d48e. 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/DKFC42400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104a4e0fb4daa94109fc3ae0f1c3ec98e3fea6bc2ffb72df01fd78694585ddfd. 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/DKFC42400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7047d5ec4381ee4a8dd5015955080e1b2cf80e4f5d2714475295313066bdf05. 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/DKFC42400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88a4c3e2a23ac9f90b7c01a1f14679e8ac34fd2a5f966eab0bed0750c18faa9. 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/DKFC42400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff0975c46fbbafacc0535bc884935d02405be3fe11a7c987e263eed7b5f4af9. 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/DKFC42400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c72cdaa505ec4b172a46bbfadb79e8cf52a34288aadad6fa0d93944878f3aba. 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/DKFC42400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30460d227b7ea9f683e162be057711e092c7663db7605014e719fa52919ef0c0. 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/DKFC42400208.
Surely Not Everybody Was Kung Fu Fighting
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdb794832a8d5716688066a102aeb604a5fa52d7e1c96c06a02fc9237c99d36. 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/DKFC42400209.
The Woman And The Stars And The Man And The Moon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f312c2ee9bebc765f0708807ac1f78153c88461273a0fbb4aa719d9adc50543. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DKFC42400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952eb9287b7527d03a83fa51d4e60c9df82daf5fead0088f3e2866c02efa03af. 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/DKFC42400211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5543033426fb0c9fff1c0d40deb60be110c6c7e7c04f3f4e3061c35f44e274. 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/USUR40721107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4c7aba546faafa0ee25cb94bdbf8a4cbf71de93b640b6a0635043ff405c44f. 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/DKFC41700207.
Trip-Hop Music - The Must Have Selection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34732029c0dc1c840bfd9d2802d942c01f90f775e07f82a51c5a90f4308cfacd. 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/DKFC41700202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ab0dab3eaab6cc75dcf8902a954a270cc43d9ee60c276aa30742f6cd52cd82. 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/DKADG1000168.
Tribute: The Finest Cover Songs by Kid Loco, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c1e5ed8271949ec69b5382fc7932c878b7045bd7f3bb4a476ddb7f08bde42f. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USUR40721109.
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 0xfadc931438c9554f81648df03584afa7b311dc315d06fbc88b614df879beef1f. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DKFC41700209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf1d18b15329449230ac53ad821f872e083bbb2520bd97ef845331e19a05ed7. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/DKADG1000167.