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 0x8e8093e5d564bf3e2bd5fafbc24b0a12f47d3892f3c0636984e1473924480d7b. 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/a07f3fe8-5639-487c-9e08-263743842ba2.json and https://artists.proofprofile.net/proofs/artist/a07f3fe8-5639-487c-9e08-263743842ba2.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 0xe64671b51bef67ab32422d16cbc23ce18baf0d7f086184ee8930bae059d7baf6. 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/GXD7G2335873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727fc7aa27f71181ada37a4cd2ac99feba40e58038face055ee81792d34b49bf. 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/SGW502497720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e62c0cd41570985df53159e54b74b2c21622aaecfe478c839191bf5bcb08d14. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GXD7V2363930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1719c86bfcb038b828a01a2bf2700aa7e0243769c3ecac63109ec085fda169. 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/SGW502259780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecedbc04d8e44f536fd0a26427a24174532d9509b1adddea7049af15c3b7471. 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/SGW502222960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0be5b1ffb81652e25934edd491c2f5857cba685ecef55cce345f969f275558d. 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/SGW502237973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b072ad5ee0b9ba9472d387e5d38a5e1abdeb53b0fdf9616548dcb4e1477f69c. 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/SGW502276053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8e1c117efc26b4d2a15e81d279e5ea73ea35573188788021c062765fd41e87. 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/SGW502221858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c2f10ef40320e1408f5ba3e60541d3ac0deb5e4ec42e934a16d15bbaec5bcc. 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/SGW502287565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23aa444abfc27957c52a0add4593fa8ebc04e654ee524343c19003915e30735. 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/SGW502210463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310bf1d8135bc18e357b925f890d0125ca1dee8cc22efbe49042027035a1d7df. 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/SGW502255099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81612e80ac68093be80c879151899d003505a4227497af10f3a35c52c48bf1e3. 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/SGW502219991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300e105f5f3d4853667f1a47e11cd9107a1b6c42162956188ad345c1445457b0. 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/SGW502287553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02affa6c136f9ba90200269056e2d664f3c1483da78c44b15fbe92a21002dad. 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/SGW502209283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd900380305fb0f8f84bcf2e30a6a6ca098ad765ba26ee9b5fbda2e847e1df660. 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/SGW502224731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba372b716c7b624e1fe2e968d22fb454ccfcf219370c485a7cc75e8cba8c28be. 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/GXD7V2350546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cc5668c279eda6299345e8b1eab062d6dbf1afc76939fcac28d6a58d135853. 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/GXD7G2284413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fc34513d9b99578777243d8029f863364d2611629ae3d3cf35444a09dbe826. 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/GXBAV2574401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f1e467d433ce652cb4795e6af19b06f024998fbe9ceec07da4af2f17d0bf33. 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/AEA3A2280891.