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 0x74c98022878088dd99c012a7fd0c720efed37ac7900f09c328408b8ee148647b. 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/0c744434-30e1-45ea-8138-ac47d3bd553a.json and https://artists.proofprofile.net/proofs/artist/0c744434-30e1-45ea-8138-ac47d3bd553a.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 0xa565f580b4608bf620acc809cf54cef20a6cbe0b4d120bc2eb8cedbdc62f6689. 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/US3DF2247162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b6560b14d6525a2c7cde13241aa5ba3edfe71d8cb93b20a7056b06e5c15d81. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM42K1711354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb28c107973cbad0db95dba82d02e0d61b57859c4e8d7e85badf69001d9470c. 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/US3DF2463012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59ded087de5a5a30a79ce17e868ce673a27bc93d8354794a0985dca85093d42. 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/SE6I32486714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3f18e2d7667008b1d3607cdcb0936dbf49797c16680f85160153e4f041c714. 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/SE6SA2303467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd641551dbdcf000f6f1266f04f988b218908d3869fd97b94ec2079ade72eb6. 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/QZMHM2268604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe37867b1dc0d86d765e03daf2d4ce082ce64e2d5e9f1dac84b7f20d4640679. 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/QM3DF2210184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4c80d6de40391bd0a3a0a51439e2c4b0896b1a2aad7150c3f8121eae920c49. 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/QM3DF2207721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f7912ce5702ffb6679e58988cb7445def8a8b624932fbe28791c66577b46b6. 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/QZMHP2373622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9292c6893e26ccc4184169366b24c5bc0140f52e91bbea81098590e78cc42525. 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/US3DF2292099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a54a9af2fb82953ed4743a5afdf2e814ba4d52e760d0f89f8afd88ec1a2cdb9. 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/US3DF2232288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4826e560f180f9fcd16866c637111df91a77f29e2a52e55cbfb2fa60ba98f255. 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/QZKDK2292751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c4fec5ed8aea9f5ebfa963977094e49a28cb0de63e519c43aaa2ca1792502f. 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/QM42K2231112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce8255d1e1f1aa161caa567d39b6ae32f47efba7716698e92340e5f41a90cc6. 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/QM42K2255410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c38fe28e182297510282d93250d2d62d02789464b859f9b8e76dbb8d84b452c. 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/QZS642193906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76183e06b76950d1dba9632bd8d2387045c9f281b9c1c4250170be67eae5535. 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/QZS652180199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a022acfc0a4e632277def38ff77ab53195bcc8910d83682e78048ab99a7aeba. 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/QZS672111768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756fa4762d01ea2a3854bc9fe7672b1646fd0455891e5d14c22a187f084f82b2. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZKDK2134146.