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 0xd3e5ae4e6f01dcec71f39cc696d6e6a5288d275aa778cf8e88581390c9ded7ae. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7507f78-46f6-4a02-9f86-9eed2159d15c.json and https://artists.proofprofile.net/proofs/artist/a7507f78-46f6-4a02-9f86-9eed2159d15c.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 0x2058b8cfd70d809094beab58e303416967de5cb5e83094a73ff9daecd4398118. 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/FRX282358667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84590a3ea554175071f92a8fdf4f9810271fa979f7337e076bd31681636625a. 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/FRX872385251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6d3c00c630245b9f591fb36d1ec5496fca358808d574622ad9339b31b7603b. 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/FRX872385252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6706f2b631d06c7daa2da19389279ef94fe09cd5aaa300eff7a08233515c60. 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/FRX872317317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c247f6a1b9c4ccc3c9e4cc55ad1ddf075eb20ebaee9062469b23c2c87af6d79. 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/FRX872385254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c73f3d801f2d099d0b9587bb51e3b79cee23c4be5f75ea7fbf4aa811572938. 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/FRX872385255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6706f2b631d06c7daa2da19389279ef94fe09cd5aaa300eff7a08233515c60. 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/FRX872317317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b700a93940a0bb62980fefaf0fdb0c9b8c47585a8b427cd953ee64dda6a8ef. 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/FR59R2396409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff473101a24d33d7958962e0225a8ce45bab00df5ae665d674e34d97793d7f93. 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/USANG2104707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71e842eb9f7666f4ef864ce1d413986de40f37b97b4be007d51ea2b4c0d5fff. 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/FRX202118513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5397b53f43bd766e70b0557c287b9d3ddba4c28dfe58e78917ecf462a34480ec. 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/FRX202118514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998ed4e1a80a0c4d96f9deaf3793232f436fee1af1c25b95ca97c86adc3e5449. 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/FRX202118515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f54a40b20c783347ddb828c8c4577162df24ec0edb44140d800daa61d039e1. 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/FRX202118519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb620111489449d87fc8a75b3ffe6d383d58e8710734d51748154b450e5110dd. 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/FRX202118520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7407416a48b776e7a2dc751b2eebe8917ea98ce9fb90c93c1f94c2dba01fb37. 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/FRX202118522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78dd7e911498f4f4b2cba2dece33c08cf20426c93ba300364188ac9559cff24. 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/CZDN92400018.