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 0xc6ce6644dada97e46b48d53380365041a0bf0f14b104e7418ff0e038d8ae4957. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7c78f57-7eb2-4c69-bd86-1d5096769225.json and https://artists.proofprofile.net/proofs/artist/b7c78f57-7eb2-4c69-bd86-1d5096769225.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 0x7235bbd2905d7e45e9656f2f4b647dc2ebf91fe57b48b60cf3f002a9941ce795. 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/UKKSX2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288bed1b61e9aa87be483280b29cfe4e1fc608a7db1e17e8a586e216b2a874ba. 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/UKKSX1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adbbfdefd4dc22bfa95531c1c80e88ebe0774867cefd01585d5ce3efcd47a09. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USCGJ1612180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3492acf99485b835687ac337c2f3943df8026771175cf116ab1b92a0d6500a. 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/QMRTJ1600970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999f9d15c3f8cbab0779eeb437df4aa196432f5da92d206a8232e13ec7ef3626. 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/QMRTJ1601058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa921c73f7fb68ede9d01fad81240cf474e150b0d92119dc43bdd20692bfa7b96. 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/QMRTJ1601059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae15b20e68fe3c02107c870b6902c10e71675b70f992db701e3eeba365326b2d. 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/QMRTJ1601060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39a56fab08f031dbb323da00bcd9bd32348ca651b747600fbec4b0cc19d9e12. 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/QMRTJ1601061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe707f440a5c2a3c8ee2fd2179b3e6e936f5472dec16bc13937b23fc5c692aa03. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMRTJ1601062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491e29abdb0a8b5558252ccac6f111ee6ab852f008fdf72d4e933abd454ce8d5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMRTJ1601063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5706a8f5465fcb565e162db706dac3ca5a5e8650da9c59b584a4ae00a38367. 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/QMRTJ1900306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3198b61a989c62dd2e0b64e5f99e99ccb7e0c1ab0814215d961895279af75082. 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/QMRTJ1900307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb28c66fbd8016a9420a39d92ed90cdfb3c3f10241e6a2758379b1f91c6b90d0. 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/QMRTJ1900308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a848aa99f3512021f70c6004df3093a6519c14d38f08f807d6381164e35b06. 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/TCACI1504728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255d6c50826fdaad3785f3736623b00b9b27ea94beea710824e9e5032d82cb43. 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/TCACJ1551006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4123922d90b41174afc14ff6236fe9e0150c363d4838834a7178b371b2933d58. 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/TCACJ1506309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb5abe94fcf5bd9d1283eecda17e1477220998456dad0c9bf0a8612db38b5a6. 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/QMRTJ1600943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7778ea94e38a89b0b6fb268f8b68c833ca89ebdfe62d55e98ac45a06d3dfc5ec. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMRTJ1700725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa407874eec0556293f51658db96302e7a008a6f983a3b942e522af6155dc6a0e. 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/UKKSX1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8805dfb2bac1bdfdff6faa17294e2f16b55faaec9e66b410c41a61e229016eb2. 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/QMRTJ1700950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222812729fac72325b546874b3df585a18a78da03768d718ae553c45f9de6652. 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/USDY42266979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf610dc885b0411eaf02e2a5b173108da2acd29d0140b3a2ebdb9862ad225cc07. 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/QZNWW2463010.