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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb088b045e6700c78ccb3c38761bd7bea4ee77cca31d0140c3a44150c533a738. 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/44beea0f-3b82-41d4-acba-62216cf18baa.json and https://artists.proofprofile.net/proofs/artist/44beea0f-3b82-41d4-acba-62216cf18baa.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe07cd18deb9d1b694cbcc0880c01a9f583d962238100caca7e075fb7891f67. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZARB1857337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c0d261c39bd4d8e18289d76850ba40544bfd6148237eb78c50b53c1d741bc4. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZARB1857338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311298f4b8e48baf6a0a63c26312d655f7f2c1d9fcaba9b4a4fec3266ad0be11. 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/QZARB1857339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3361b67efb6632b43d21f0eb7d44e42b14f1536e4e68d6d5a5a37529e08062f3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZARB1857343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed2d33251215a36e530744c8b0200aa9af0e81c2d882fec22f39f813a22e2b6. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZ8LD1973889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710feb31d91fcadaad7303ca120ddddebf205a2c934c3c4c5ba9720b5eac66ce. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZ8LD1973890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f9ff9484362c55712690ae659c6e52164bc7bbff654b0eb4f6ee4a30e6a578. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZ8LD1973891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863f56fd5224ff986bb92cf6e002e41ce50d815f558cd73c19afd4cd84b57775. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZ8LD1973895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8b32990bbfc80d55bc02b485e38a3102c27316f903f4f2673fe1eebc5e1de0. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/QZ8LD1973896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca324fa3b9e4a0982507602c6e8171cbdfeb71714063fd49b5fa0e282fbe452. 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/QZ8LD1973898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2374d8dffce61c55dd6a54c9fb8c720b02fb96c96d291df9d7b5e12c0ab0ff7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHN51948674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58bc0a35409ce74428791d14e1378c663257867683d93a98b757a4a8b2cc29d. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZES52025267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f632786935b75b8b30524f1726267a3d4385bef2195d4a07aaff51b047e5c47. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/QZHN82017842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9797134c8a9db5bb5fc7bc464a6b9a40e80f58d655505930f30fc69b8dfcdc40. 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/QZHN82017846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15540a6ddd02b787de5ba85ed92b495f068ae5eff95825de78ca50de2035aac2. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZHN82017847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a514d6554b4adb67868cc1221c9b7a2c4abf9ee6b06497ba14cd435cb8823e8. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZHN82017849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc46449296739846c9c16260be2db5ac6fad71c882585bba9c8d37dce93fff7a. 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/QZMER2025785.
Skipping Stones That Sink Before They're Thrown
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3436ad483b832ccac0b4f9a2f4ddb4d350b81bfa11557ff5128adebeba0fe720. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZDA72125928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c4cbe8d127c5304e655023681b4d46112705917abf228a3be168d6e40e6719. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZK6K2182005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a41729a8b33a04019e72c3ce143a2d6c2aad83db1703d505b579a451853bb6b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6K2182006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c1b9426041b4b7487a49481a1c61088f9c1a9ba61f91e71b934efe594138ca. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/QZK6K2182007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265a0e2f11fa2366543e05932e1d44e8722ffc381ba345374289c296521c724a. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZK6K2182009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2de3c0550533dd17c6fec980f9469420ed819c3cffb1cd68d446fe24ea6e94. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZPLR2292522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4afaebdd7d854f654a032ec88523c2526f978ffed085b7a6f04378e29d59763. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QZES92362710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71c1b1ad3e59391d94c829dbe2e5f6c2beaa6045e740ba4f8aa99628cb697fd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZHNA2386854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa008d23308c7d34f3be918cfde3ecbb1ea34a3a9693050b4c30c5428ed91a45b. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZHNA2386857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825718112265a805f3c036e8a66d161b75355596bcf9bf418bef5abcc8343e5b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHNA2386858.
Down Out Law (from ‘Let’s Go Dancing’ the songs of Kevn Kinney)