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 0x66d932ce9f19297d0488c63860887de3ad5556e2ff6dfcb76de4cf5c7a3f114f. 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/f1ab980e-d84b-412c-a390-4f408d57c067.json and https://artists.proofprofile.net/proofs/artist/f1ab980e-d84b-412c-a390-4f408d57c067.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 0x47e360ea29c9740cca7eac73a8695eb3eeabb6239a89fcf8bb48b834a6f6f419. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE5IB2263857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb9c801abb73358a22adeef1a14383e418949017730613ec5c2834b41aa3662. 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/SE37J1600167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc383310a330903b063da4d849075c005424a71e438dc349620eceebe674d8281. 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/SE37J1600164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9e3a27d62bd3ff2c0778ecda022d78cef54d1c56e2f596cdfe7b5524098116. 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/SE37J1600166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd311362a68151559413632f7fc14c45ed83d66db00fa7bc313235b7653a80a1. 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/SE37J1600163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3480bbbab6acc6cd125d3dbf41cac485e084ddeddcfce0bdde06204ea57a485. 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/SE37J1600165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9e3a27d62bd3ff2c0778ecda022d78cef54d1c56e2f596cdfe7b5524098116. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE37J1600166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3480bbbab6acc6cd125d3dbf41cac485e084ddeddcfce0bdde06204ea57a485. 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/SE37J1600165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd311362a68151559413632f7fc14c45ed83d66db00fa7bc313235b7653a80a1. 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/SE37J1600163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc383310a330903b063da4d849075c005424a71e438dc349620eceebe674d8281. 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/SE37J1600164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc383310a330903b063da4d849075c005424a71e438dc349620eceebe674d8281. 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/SE37J1600164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb9c801abb73358a22adeef1a14383e418949017730613ec5c2834b41aa3662. 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/SE37J1600167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9e3a27d62bd3ff2c0778ecda022d78cef54d1c56e2f596cdfe7b5524098116. 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/SE37J1600166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd311362a68151559413632f7fc14c45ed83d66db00fa7bc313235b7653a80a1. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T20:41:11Z), 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/SE37J1600163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3480bbbab6acc6cd125d3dbf41cac485e084ddeddcfce0bdde06204ea57a485. 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/SE37J1600165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178258a5d6f64f97d0d3053b02394ce866c3f3666e83675bd73adfe33e38c9d4. 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/SE37J1504789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406c17a041a0d11410bcd11ad5ac5234a8dc128ce59ef917857f48505564982c. 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/SE37J1504792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0cffb2b1dced6252488afe83fa7cb074686d19078cd2ef7e3bb363fdc209d3. 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/SE37J1504790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3590d0a7706eccff16b6ebc30e123f50ec2ffe1dc3d230af9158d5c7a26403. 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/SE37J1504791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c22df4bbfb230083679304780f9385682f7fd9864a4044dc621a419753fea3c. 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/SE37J1504788.