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 0x779312e9607720a7495c89fe2b1f6f8bacb231c3ca108fa4fff9a02d9fb8e1ac. 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/7061f0b3-0e69-47b8-a830-c9beeade6b13.json and https://artists.proofprofile.net/proofs/artist/7061f0b3-0e69-47b8-a830-c9beeade6b13.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 0x5bc96aa31c1c5bf2f527879910cedecfce86e24f5fcba0524a4ad293ae57b703. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:04:28Z), 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/QZWFE2412201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9075e274d947b3207ce4890ee06b08fc836a332af76a967b7d8c1c7d08d3e207. 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/QZWFN2468254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915572e2454c3166eb4b23f65bb9d1bf3dd6811f5cf32bfc4651cac59dea3544. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:24:51Z), 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/QZWFN2468255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f62722f40589cace8e05a52cc125765f98e899c9f787780c5a96961dd773e2. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:21:33Z), 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/QZWFN2468256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb01b76cf1a3915670f22ae61c5c427bbf196a52d1faf3ae54aa22b0ea187b31. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWFN2468258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e4d72c57bf7c7a691a63bec1e22789c341cbfdbe2c122abb762c56876b0c47. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:32:58Z), 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/QZWFQ2444206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323aead61f9bd656f955ddac8cac41a3f5aff43cd6da2d05895340b3b58f48d9. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZDA52520875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430004445251067f3650d26fff7def3bc76c2eeeff71b6e74e2c4e2a387c0fc4. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:08:41Z), 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/QZHN62502486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5580120f52bd4386545cf67d7cf5fca8cc9c6dd2cfa37b3588183ce8c23b6196. 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/QZK6L2592122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d9c27eb22f84f6943a750e1e01654d4b45914a831b5431d26b7fa6888cafe4. 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/QZK6K2595048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c2fd282c1f80dc89be90ed28b0408376fbf3155089640598e695a63ccb0e46. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:11:07Z), 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/QZK6H2500518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809e88db4d9d655cfa4f1433998fa81866738f3a36f64768004bb71e106c6123. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:36:26Z), 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/QZK6G2514416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0a69c4da1c73a9203f171268f9a3e0e3efcf40c3b18b78bfbc9369c991492e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZK6F2583534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e4d72c57bf7c7a691a63bec1e22789c341cbfdbe2c122abb762c56876b0c47. 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/QZWFQ2444206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d386408cd8781dbc0316127c94afb298e94ed25b0c1a53c092b0d17102d3ffc. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZMEM2506649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20842faab86089593e6329e362a2aadf05b3164e69078c2685d177dc2274917. 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/QZTB42581233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccdf682f44bcf96fb7917388104fa8fd37568130232ba2d1c60e9a0ea368512. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTB42581235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dcf4de13fb52529e80f1fd66bfb591cb92c98a688cdef02042ff787b8fedd8. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:28:36Z), 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/QZTB42581250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e4d72c57bf7c7a691a63bec1e22789c341cbfdbe2c122abb762c56876b0c47. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZWFQ2444206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295264813ba719be7f5c02212cbfb5217a2c2e1994a36ecf2c2e15d210136c98. 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/QZWFW2533197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85cdaa7078edb0c7d1141d2d51be10cf8d96ca472d3d92d0c910949c12a405f. 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/QZZ7P2577111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd926685c8e634750a84210b92d835068bdc72caa785191ad7e194376a2f80985. 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/QZZ7P2577112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf63ba7b0521a91e5e90a1555dccb89832426a5547229f59057c73d85f255b34. 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/QZZ7V2523347.