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 0xcf2dc2cb7e9ab291e560fa814f2f38a3ac7f49071faaca358a7cc6a711878840. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e0e7b06-9b65-4ded-a615-132c5b2afa71.json and https://artists.proofprofile.net/proofs/artist/0e0e7b06-9b65-4ded-a615-132c5b2afa71.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 0x8d8ee842437445e9d1a3017fbb85479405a1038549b3f598047411dcc12fbc45. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBLFP2340453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858ac1a9490ee1873f0f560701582c5102c47272dd4ec29fb7cde6f4823a7a28. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/GBLFP2340454.
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 0xf66fd98b1787e9429b87de249edff7d58c96a3de63435f90d639ea85dce8c64d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBLFP2340455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c735da141600b017588006f0b8722a9d02375bdea7c55eba5f8ad05149c996. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GX3Q92388183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac1e3ace55fd1627c48d9feeba720918ab2298c526666fc88aa96830fc2ab25. 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/GX3Q92376228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380a36145b851062060e351be296e101b875e010f78b8a8ce9321ab064ee35aa. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/GBLFP2340456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa054f510d2b89dcd100d457f1d3d86eec91aefe8d4f26a8d27dd996136f7b394. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBLFP2340452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323703a2f5ce9ce81ada16229032a0f65526bfdae5cb02de2546882aad99efd1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/UKXN22312391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909d1133aafcf2cca5a347c306173d3e8237e34676fd3060ead9ae208e65459a. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/UKXN22332911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eecd6dbd1de21f73c520fa60155dce9fa230ddf7c7c39366e7fc675f14986d1. 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/UKXN22367462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad85fba4444834d34d433151be19adccdecbf51c115b9dca64aae33d14b79b29. 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/GXF9Q2400327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9c95494946ebc9c252375adf510847c8f7fbba79416f5f6ef52b7b9d6948a7. 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/GXF9Q2400328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe407ca284c1496a1b7aba11f696d8f4309f5409fce70f96b4ea6dfde59de37bf. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GXF9Q2400326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426928cc1b01216ff0b18b50463f615ba9487c2d1fc845c71e92522eaced142d. 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/ZBCHJ2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54acfea7154b138915657fca3ace836e0debf329a341a1485dbc12f914a941cc. 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/ZA56E2416391.
Sober (feat. Xduppy, M.J., ShaunMusiq & Ftears & Mali B-flat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03af8acc444eb8d72c6951b49ea01214ee354e98e18b0075ac283b60e6bfb0e0. 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/ZA56E2416979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692f961baa84fa5a132afdeaee4617d61142c3c2e6d48a271c24ea939da6449a. 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/ZA56E2416286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c3dea822f5889d693fcf4676d417861f2aadbb35d493a2464a63a22a5390f6. 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/ZB1OS2300178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22dc8a00f40fa87530c0c0feb59f18f10eaf1b4802558e4e260ccd544827fcfc. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:02:08Z), 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/QZWDE2407460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3477bd10522246ca9ec7ef1fe9de261d24bb188bbc6ee86cfc480691279a41. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QMBZ92494876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a2bdbee79f1d56bd3ef9d083b404bd50b87018b9bece936e4b81104f6c75f3. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ZAXP32300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dabccc17d24e2464ee7fa12509342b176b2a66d79d524fc70b693c14f65a1a6. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/ZAXP32300109.