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 0xe44cad27e7c6b5002a9feea4c88a218ab031a1605076298d2439abf96872df0e. 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/b49b0d8b-7520-4bc6-9736-12b0530953ab.json and https://artists.proofprofile.net/proofs/artist/b49b0d8b-7520-4bc6-9736-12b0530953ab.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 0x4dda1875ed3a258f781f39196cb2be20d4aab323b54bdd071b55cb7f7f07ad2f. 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/JPG102402234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fb49b9b4b9509a18b7f5d83871c1947791702c60b7e9fe305af8da25449cd6. 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/JPG102401797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaee1800f28007ee9d6717b8adf6013f023ed088b04d4dafb473ac745e8901f1. 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/JPG102400976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91e72403e3b0664911cb9a2f0471994e6fa9b5760e120c14b1a0b6c2cfdbf5c. 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/JPG102400977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3812453879fdbae183d89991248408c0cddff77024d0600111b3b7379089471. 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/JPG102400979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640bde5c4031c3db2297a0ff06a044da99a61636eedd1157801eaf1f71e88bf1. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/JPG102400706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91e72403e3b0664911cb9a2f0471994e6fa9b5760e120c14b1a0b6c2cfdbf5c. 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/JPG102400977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640bde5c4031c3db2297a0ff06a044da99a61636eedd1157801eaf1f71e88bf1. 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/JPG102400706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49dba0bbb0ac65cfee4251bb800155c0c6ff695c1fe1545d2fd4d65d09c497b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPG102301442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cea90eecb63ba334af7cc50d11165bce10b78bda4a3844d7960c1919351b156. 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/JPG102301443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff5577d514d83222b56d5fe817df9e360a895430c77f1bd80c1b859fe6c1c0f. 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/JPG102301100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72222adff928175c5f18d521424c996274b6d8af1af9e658f62f0c3d1ba47975. 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/JPG102300898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8557b0f5adba73cc05e0ed0158d82ee1ae0afbc84449ba3b0d31b5872a4474. 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/JPG102300597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6a052266ac7c9ead2f9112a684ccf6742edaaad5f1c1241441fe4cfb10cd34. 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/JPG102300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1883c13f4934d6929830e1dacb26517de4cea55bf41fec352008cfd6b97c90. 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/JPG102201622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065caaa03e2598640defe1dd9d74ed9b11e3ee71ab2a19d1242a05d1a30a118e. 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/JPG102201524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e7180a23eac4d2615370a9523b78485449483382dff1d6166e4ef9c5f9d81f. 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/JPG102200895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2638753d680afc975c316f165fd1b9ebe42866aa4eac786d0aa1f44b6b29e2e9. 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/JPG102100855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d3726fe4fa93a4ec6116c99402404a7bc8d4736c16ff8e7d37a829d2e8649c. 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/JPG102100856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d3726fe4fa93a4ec6116c99402404a7bc8d4736c16ff8e7d37a829d2e8649c. 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/JPG102100856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab06ab17de83b2d8e8a07882f38ce147312945130e0af6a7fa189f5e84cabd4. 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/JPG102100351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c08fb42683a2524760dba46eb9da121701339cde1b4fdef99597298a3fac4b. 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/TCJPM2004437.