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 0xfbeb6d631fc2cf61f627cfacef8a5715a494d93f154d3e631f81e33b5929f296. 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/59943ef3-2999-4aee-a768-48ccd0fe815d.json and https://artists.proofprofile.net/proofs/artist/59943ef3-2999-4aee-a768-48ccd0fe815d.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 0xc4fdf2fae72efa1fb3bf987298d3668cf86081fdce40bc94d9773330041b12d1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR0U91700924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24647af6d2b899810826654bf03baa6df7f73ddd13f36f24eb724e384b3edc2b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:25:12Z), 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/FR0U91701381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae3ad7c1867af3a74e4afe50b467e7d01e04a023f73472a2c120cabc201fc68. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/FR0U91800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c44e2d71fa6fa1cacec8c52d575632e1833f06a93f101dfb1efe5f0cdfa0f7. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:10:56Z), 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/FR0U91800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa953b9fa4f874fb87f2bef23551af76420cf1769af6e574afc5905adbb1b35dd. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:52:08Z), 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/FR0U91800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d31b6f3d98ae34bfb9341793d1635c8d9c5bdfea8de9cb09cd2d4ab6bb41044. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/FR0U91800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a2def3e7d4c7fee4ac3b3d8fc1e0996607b0e7d5ee7701fe3452e3f19ae980. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FR0U91800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7fa0ae9a456875d55bd4bc16f8a37f4a94f04493c757805a81bbea78d5d076. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR0U91800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1871aa7a300072482f18a2aae5318d8a54552b2098afe612eee7e372acef4fd8. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:55:52Z), 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/FR9NI1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef83fcb4992196e693d3eb2c5a8d716203e169b4532334c152148a48fbc0228. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/FR9NI1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8526668e082f1a15e296e9dacb2b2c8abf60be5b4062be54ac2a9546485e2e. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FR9NI1900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb68d031bf8292e2819c22759d46afe56b2e9d2add5d3670d1328f55b61007b7. 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/FR9NI1900140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f48e794d875db9de0ef59a82b78ac053726cde3de804933d5e3f094416f448f. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FR9NI2000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf858ece392666cc508010b7f9d0d7463187f5fee9e0775b33bde56d6f02568c6. 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/FR9NI2100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf410f0d8610a332940b4eae9bcfc063e478b05a0f9ebf6b2428c135c811ce438. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR9NI2100380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda02ddc1b1a312d4a081314f2d1ed67f32c6fd5367b8edf8257c3d71e029aa77. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/FR9NI2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2364a447c1a26b4ef61d23e6537fda18db3f580c8a650d16fe1080f93e214a9e. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FR9NI2200740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd83cab0950cba674e8c9242d0e17203a13882e035994dd932fbe99398d96396. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR9NI2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d0c0ae8ab3992acdfe68101d10470cf996beda2cc05852a15ebe1891cebee6. 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/FR0U91800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d0c0ae8ab3992acdfe68101d10470cf996beda2cc05852a15ebe1891cebee6. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/FR0U91800042.