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 0x5f0237a4bb1756ae2b8e75b539c4a8da3e1273e6afe76d424f52b87a536a127f. 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/1e9ea221-9529-4fbf-a5a4-5d271f8ed113.json and https://artists.proofprofile.net/proofs/artist/1e9ea221-9529-4fbf-a5a4-5d271f8ed113.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 0xb2f2836fb1e0a401ee6be9268ebc1e52c65dee4155e680ea9dc0d12c397c6526. 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/QM6N22487441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e265c056bc12be9ee7306d7f4e793389dd9055d5d96c4e1066203966692c1f3. 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/QM6N22380422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192ce583487c97a00c132513a55f606f2ec92acbe2e81c839539cd71371f0758. 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/QM4TX2363475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d22a20682f0721d5f1975c257d719a718530fbd892578d71206dfd8560d13f5. 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/QM4TW2350487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4e8d5cc580b75f9a79aa2560998096f3a7bbd7570c34687869d318763b2507. 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/QMDA62229974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4303d04c9b50134ae110498305014189147ffc766ab4c7b92235dc26edf4068f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM6MZ2254496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754cab363651425a4c371ee662517f9ee13d8c2118291332ccd549e08af6ea7d. 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/QZDA62084619.
And Heavens Began to Fall (feat. Lauren Babic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bf36cefc7baddaf12809f70b8be5e90a1ec2c5e1307b11d0774700b2d50f61. 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/TCACR1621545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f17d55d21debde6ba76ea0359e4dc979bfa3627044a4b1a1e01aefc0adeb92. 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/QMDA72221056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e265c056bc12be9ee7306d7f4e793389dd9055d5d96c4e1066203966692c1f3. 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/QM6N22380422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f17d55d21debde6ba76ea0359e4dc979bfa3627044a4b1a1e01aefc0adeb92. 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/QMDA72221056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d152803d38f367399eca787c4a8e553929224eb9512a8419662ef71538d9a63. 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/QZPJ32250619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f1275d3d6e9cadec57874b891cea048ea59ed40868608b2b0ce52478d19f96. 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/QZPLR2067113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1407edbad5d8bddcd671bc91c4999fb31bf303cba97b4444653af4262341ee. 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/QZPLR2274033.
Already Damned (Inspired by "Attack On Titan")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0e35bf9cb0437374a6627ee0112b9767d7ca7e3f398bc98b9c570d3200a005. 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/QZVEM2364982.