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 0x87b678a772f830abf7bee7458f448615ad3fdada7e5a12eba6d7473d5fa9e895. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a96f3fa-489b-44e3-abe0-581048116c77.json and https://artists.proofprofile.net/proofs/artist/0a96f3fa-489b-44e3-abe0-581048116c77.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 0x7e29b6d6529a67b65a99ec6c78ce5981a271b130a1a48e519ea070d8923dd58f. 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/US7VG1869477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ed289348e87f03d5ad3d59544a171b6b48cc58ac97ee94bc83c0188c371d53. 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/US7VG1869478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55da7821a2dca41fea89232d3b86cdfb8143cd6fa57b6b6d30ee0564c4736287. 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/US7VG1869479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f7ab148e1af324f4c435259bf44f9c5dd21fc668837dfc437142e6246a6db7. 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/QZW9L2323283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1272a4a2aa69bbd5931ca9227abd7ca08a0e6b7c31921be84e4869731b835b4d. 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/BR4VT2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0ae53145553e456feae5783e2a07e83b183f5b998f07e3314953cb605cef7c. 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/QZW9M2262321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c958ec359e62ed50608eb70fb7da625d00937163f61ff115d321ab7c88d116. 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/QZHZ62281947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498d7e9652625be78740e083bae0ef1307e264d532186ada5256a54a33286a06. 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/QZTVM2105631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd297d2af46f05693528d09e46055aee2d95378d38b057ee0580a884a2a21fa5. 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/BR5PQ2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a602fc8f4f4b439a016501b25956999826aff35a07b9bae4b92b889e9dcdcff. 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/BR4VT2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa022b9bc3233e565ff583d73b84c58bb62bad9f02d051e5f3b53837762d5f6a4. 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/BR4VT2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ea4ea005c8a87ec12144998fced1b7586add22bfc55e825c5148163bc76e4b. 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/QZHZ42251019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbcedc30131959e5dc8c701d4ef5e9dc3d9006c276ccc4d4ea86b5239e562c47. 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/QZGLM2240073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e703c5cbb36a53ee8df462c717364e7cfce2de08e9db7e9317e1bc63a5a4ed4. 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/US7VG2139436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f80671c96213f0d0a4836bbc86152d4a3c8901e402ce916ad7d42e7f3c5270b. 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/QZNJX2081988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1811cb337a8c0b00354be1dfa8fc503d93510194e68f2491f0b20ddc52770f7d. 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/QZNJX2081767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56126f4156b670ca9985e4a0a2649c22bddee731cac0f5c898c04180cfe593b1. 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/QZNJX2081768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba199c5372c461827ff43453e714dfb2af9a31e5fb5b3ec7b1bc15aa1d92d55. 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/QZHZ52027181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700af0d505516c6c791e48c12dae1b060aa51a7531c3fa9e3786e7e764a83329. 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/QZHZ51934065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115199ab504182376e4bfea3753a80f02b7121bc15e38b7973179c90223ef57d. 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/QZHZ51934066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d37504286eb511d3df663e5ec95d24b605ea09a4a154f6ecd8d488b19e96f9. 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/QZHZ51934135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec372180e8b7590db499e4cfe954ed2f645e1f21ce8123697de1f6f6bd11d3fd. 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/QZHZ51934136.