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 0x614b2e6342c15e96bf6650540619098dd800ba8c352336e09b6fd5ea5de31fe4. 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/13685a71-5d2d-4538-a55e-13ae40ea17ae.json and https://artists.proofprofile.net/proofs/artist/13685a71-5d2d-4538-a55e-13ae40ea17ae.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 0xbab7529c8da040fa4e6bdcea1c6cdd2492f5448d4a2b7df0c95d37c449535017. 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/ROHPA2200256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b682f1fae5a2456d5c39c39187969c90b2082de8de2019e11558dfa53005b7. 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/ROCMA1711157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717f2c5188abcb3c16ca2a2296e6471fd109df458f27e41ade37b8c3898bad81. 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/ROROT2203710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a6b1f27807032769e41faf057e39ec0270c19dd451dac3d3c580a7199c001a. 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/ROHPA2300087.
Doua inimi - Cristi Nitzu & AQQUANOX Remix
Doua inimi (Cristi Nitzu & AQQUANOX Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5395821b5938b87aabf3306658954851e75565bccf3286dea215f9c8f8699495. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/ROHPA2200072.
Doua inimi - Sloupi & DJ Jonnessey Remix
Doua inimi (Sloupi & DJ Jonnessey Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61a53c56f2d3caeaef36461013267b530869f5411a636d3e8322177cac6d4ec. 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/ROHPA2103764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c68f3f1576536417c247d6fa40c6fe698858b671196dfeabb26b1e46f249cc. 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/ROHPA2103532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f1ba25be7aa5d7ae5239a8874faa9ceb58e052ba6a3f572112a6aac6385a40. 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/ROHPA2300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288530ce71547d0f7d1ae5b01de02f2f94ec4d4a906778427630201421828c36. 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/ROHPA2200398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717f2c5188abcb3c16ca2a2296e6471fd109df458f27e41ade37b8c3898bad81. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/ROROT2203710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26106aa84a60b832d39607ade9e4c8b3c708de95582171473e4577071bbf73ee. 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/FR59R1811419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb7e8bf338ae0e420c3719c6ce730d1708d98f2e100dcd843fd1f525dc9d578. 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/ROHPA2400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf3e575a3ea2ac04ef4974b325e1445b5a98ef5ae0f9786d303b1550e5d7003. 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/ROGRA2300210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4c48417ca90892334ffceaf89a7b486c995ad9427d07c2479f54cac03fffe9. 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/ROROT2402094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5941bff6d52379371530f0b9eb900ab6f2a3d16fb479bcdf1de74a85f41f1af1. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GB2LD2410264.
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