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 0xf00e4361ed2160f52e52858f42c39dcfb8e9e35133730144d3b67d8f5b69ff26. 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/b348f0e5-f9f8-4f9b-885f-613e99113559.json and https://artists.proofprofile.net/proofs/artist/b348f0e5-f9f8-4f9b-885f-613e99113559.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 0x8d0c170b7f025e360c61b715c33797232f3dafe71c35ce4bf0d81b94995a86b0. 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/BXIV82003681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20081826da3b8e49a977b1b709ada9cd3fdbb752eea58772f8b9dbd1403a97a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BXIV82058796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581bec3784b2fede1bf85f74a68769804e74ec29906c5a525de92c6ee2348065. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:20:14Z), 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/BXIV82036692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6effda9fa31089ca4e5603c5bbeadafbb65837979f15938eaf4779ba1d1907. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:38:45Z), 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/BXIV82028853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a62e75d8261cba7199fffc28b054f00d0336e579d4cbdf5ab5cf3a7ac23bdf. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BXIV82127187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29fb9f60e8faf7f12e09c74804778f588285df50bb2792279f3dffc27bc4f45. 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/BXIV82211347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ed9c560b96c27ca3423f6766cbf18269200e418abe2896b66850c1335697f2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:37:51Z), 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/BXIV82243103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ec3489a0e6d641a7aa2ef16444b8fc466cafcf1edb76654fadce0b6f7c35a0. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/BXIV82283059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b01948b01401ec00c2ad2b5c20a3d7faf577ae8a00a618d116bae4b4246902. 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/QZW9L2229570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e765e017e21a97e91e006dd3b046f922d4f5f52202abc25af98fbe4da5c08a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZGLM2397458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fab680e59e5a51e2f05276e7548fc57964a7b145b7252bf1689e8922b3bfdb. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:52:02Z), 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/QZMZ92371094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad14ab59c7b60d350868ba51843522b38d872ce298de07d62c0d29b96250beac. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZTVM2311452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07da9248319b87b536f51b08aa0d509f9c832f3baa94ecd89903dad5e91ec47e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BX4IU2510453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a38f88b349390a7070ba605a3c748e5538a82fca3d64678f43c1c878aa4b010. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/BC6M22522999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f2c711c3ba7c5ad9fc6dcbe198fa7fd495c780252c667cdcd0526569481da5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3F62585767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5feeef9f16325382ef1a49dab93b76963ff497961d8115d17cff9ef3c224fa. 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/BRUM72301775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277156896713958bc3a529febc55cdfcfcb2138af92dc04371e8898db1f3f182. 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/BRUM72301782.