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 0x62154ca9ef64d9e1c023d91147028ada1c92c19d3979b34e7ff22765d6ab42d4. 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/950039db-dad1-4b5e-9ecc-6d90ed57281b.json and https://artists.proofprofile.net/proofs/artist/950039db-dad1-4b5e-9ecc-6d90ed57281b.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 0x4a7f06baa810b1052ea3549c88f0a698ee24971732fd4a9ae2bf8335e0a65f50. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:46:08Z), 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/GX8LE2424805.
99 Problems (Buildin' A Bridge Ain't One)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d432d9b96aa7b0ab3ac900cabfc5ef4a919bc802c229f2788534f2ccff00435. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GX8LE2429481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab509b220630040abed48ae42857d215b1465bc1c9d41899c50d98128d448b7. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:59:09Z), 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/GX8LE2449755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1a22fb4c329f11db3bc454aa60ea26d795f5acfb346e1f370af412562a4129. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:43:39Z), 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/GX8LE2478127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e76157fae4c8798703fd89c59335cff1f332ad6a126e55c9f92f1b8b5cf3952. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GX8LE2411844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039b290fa154c000b22b050009ac53c3aeb190efdd346f60c6a8d1a9e237660c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GX8LE2421751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabb48761fbc72aa3e036f8c1075bd6528008e15cdac5224262a9ab171b67399. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GX8LE2463378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee847c943143ef74d5a404dd2265ffc19073d5741aae41e22174dbd0830401c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:10:57Z), 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/GX8LE2447668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb65705ab69750612e0024e62832e619b32ec6221df314a6c16dab5d1f9c356b. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/GX8LE2455002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cedbacb052bb8984f9f6785a94a96fd20c57b6af4a3367208da41469ee7474. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GX8LE2483713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4273fe52c103870a36d4bb3552fbc82b68bdda372007b65e309bc612cebe4c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GX8LE2448427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe0cc57fd9ed6f228d34cde51d2e63d042b347faeb921046efde71d2617ba84. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX8LE2405961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b15ed049a51c9e275c45cb50d160a67c12019cf85022eb59a1bc4bfbf26331e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX8LE2419285.
In The End (I Should Have Used An Arch Bridge)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c78555cf355447ea6e418ef4d107223e9b40da7fcc9571483cc1f7bb747b54. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/GX8LE2473480.
Always Walk On The Strong Part Of The Bridge
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca43f0b6e1a085664e6ce0735bed68aef820ca72e9353ded04f15ace0dabf512. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GX8LE2484403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf644e599f2c74eb10a0fbe142e94cbae12789069be94e4bb524a63205ffd172. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GX8LE2413404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244a5868453b3e8ed9f91d15012e613d3201c795fcbdd87a4dbd5fc520b6d167. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GX8LE2495237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0691c082a4513becbc9bc428ab68301b165730f1467394d4dfa34cb58b5652b2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GX8LE2433914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf68bde612834e38bbce9a38333e978b5d152983362e92932d4f2319b31747c6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GX8LE2456436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987a62065a55d7f16c7f6aac20ad2dfe128670bb32813ce77fa455f66b5d5d8e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GX8LE2446851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d57449808e6abc64d63a920676b1e9ea46e2918c38454a84c257b8c4d3ff44b. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GX8LE2412389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91f668986675df139ba4b9a0ca07e259a70fbdb6c81cd37c348e2be97413b91. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:51:16Z), 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/GXBDT2402678.