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 0xbd325e4c8a52a33cf44480268594a220c7ecf99f21ea81e4d09bb5e762e9347f. 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/3c172d71-e81c-41c3-a10e-7fb505ca13df.json and https://artists.proofprofile.net/proofs/artist/3c172d71-e81c-41c3-a10e-7fb505ca13df.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 0xa1882c9ab2f13bd91e02bfdde0087530128812fd7ca0db94dbfbcff59eb579d9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBSMU6514495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfad8aa9314a6170644ca9617cf0eeb9741bc036daea76d2f9d34742edd47dd. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:48:22Z), 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/GBSMU6514496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2256647cb547104892448adbae94c7f9bbea127155feab2c07982c6779bd8bd3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBSMU6514497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea9106a9ad64da306a7d5a2765e0355534663df5ab4edf293b2d60116016a81. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBSMU6514498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc0f26e10dd2ad11fcbd87619acf11df031281e610b80ca43e2230fc1b4f260. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBSMU6514499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdc46e03d135f363849716377dbf1a6e5d83b876e501cbf7f9901c4e483fb95. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/GBSMU6514501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08af36a33034cab01e9abb559964f669dcd5a4de934a78bfd56dd92365527216. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBSMU6514502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c51a10c2a115dead9000337e112493aa141d0ef74c25e5ae1de2fd2ae6f374. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GBSMU6514503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430139c440fdf9bb90c83e0b712b2a1fed3d1f6f4f1d5c682ba438c2692d68d3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBSMU6514504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c621a6f1d04fc7967a2780d8e50d0eb321316a13bd37d161cb650facd11cd3f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBSMU6514505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a27f67ac871d5885e797ec2f138281c124943117e652d6beff6f394d919c28. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBSMU6514506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cbd54c5c7bbfc1706ae8d9195c91196035939ca4afe3c31ef24146abb6d32f. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GBSMU6514507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5954cb9a70d3a5f459f1460216bcad32ae0ef7d2234fb0426aeed015dc3d2496. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBSMU6514533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cafcbee88538da671bac6fefbc19fc13aef671cbbbd2d7b29894fb107aef52. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:47:19Z), 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/GBSMU6514534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878d1b7e3d912cfa24fd2bbb0409c913a58f5fbab689da4f4e0ec6abb5821e24. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/GBSMU6514535.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf174ab39ce32e96d6ac32dbc84c774ea867d8f0e2e76dfb1b6bc47c91c491532. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:22:37Z), 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/GBSMU7082250.