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 0x4f6eb729392c003958fea2aa6cd6b3794ab2fdeecdffafee3b047045bc7d5762. 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/fa0753dd-c95d-443e-a1b5-88909b4382f7.json and https://artists.proofprofile.net/proofs/artist/fa0753dd-c95d-443e-a1b5-88909b4382f7.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 0x252011126e3dbddbfd00e79e2994b916916b7a7da2f2bd2e5b2f468f8750bc03. 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/QZHNB2079724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d14ff70a2b7581038a27f9f0656c918fdb41baf4bd328ba93b058b85ac16962. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USUYG1472181.
HALO HALO - REMIX (feat. Guapdad 4000 and Chevy)
HALO HALO [REMIX (feat. Guapdad 4000 and Chevy)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593ede0612e2ed834ee9b088db82d739f2b39d5075b0fde5686e6f9460e9a99a. 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/USWB12003851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00be86896bb63c9e853be78165f48298f09a70616e808cbab6ae6223acf436b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM4TW2322898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1a8f273a955281dea29a445db0a7b6b8752cea3b703007d85e3ce4e4b93284. 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/QZNWZ2052554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd82e26ec607ddce89e094a9bed808707020a2c61367ac571486b58e7554e59. 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/QZK6G2021811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d57815579ad337af9a5f19565247c2ad1cf48ec6169a3f24e485f83eefab24. 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/QZ5FN2274995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65d9c63d88242127e55454798bf5edcab0b79d216dc4802a62ae038c221e79c. 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/QZ5FN2275000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1152b0530a78ed25a788d658e0d2934915038c396aedee8fe6796fab132226. 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/QZTB52450060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd89901d523e8404c8e7e71d83454037c9d587a4c3e9247e09eaf668c57057d. 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/QZDA62351365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3744bbd82e3e6156e065cf41e11c8161891cdc4e7e7357bdfe20e76af120fa3. 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/QZHN81987271.
Band In A Van: Bay Area Rising Live Studio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4566194234e4b4ab2b594198702968fc6790a8e42f899aa28158b24763182c3. 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/QZRP42522832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dbb96f5402abdf171bf7f33a3cd0bb4c3fc51433eeea1aa6e894673ed6acaf. 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/QZFZ31905732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842c9bf7cd9abcfe230669fd6bc1f301c84fa77674e67027d056ae91af171eb4. 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/QZTB32455108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed072181815caa0b4fef6521834d73b402e0a91bbc97673e54bb2459781f0c6. 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/QZWFE2483783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cc68d7ec38564a31ee7937cefba82dbe11640409c69f47dc24a066aa6579f3. 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/QZWFE2483784.