1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x63d3f71a3a9909ab846af7835e363aedf2b45bd166dff5d4ef3e1edf2815ad9c. 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/3e12c07b-66a1-4e0e-965d-fa8d91f9b305.json and https://artists.proofprofile.net/proofs/artist/3e12c07b-66a1-4e0e-965d-fa8d91f9b305.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 → block OTSBitcoinBlock must exist at that height 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 0x80115f85227fbe959196496973deb9d20e7db3e3f015760e493a50a1b0dcd8a4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US85P1319101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3887838d02353350988e0409ac6fd87e02cc0438b78ce057b639536db12db35c. 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/US85P1319102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d37efce109618d805a5271548debc69e4e59b85af0fda15e289b22442f1726f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US85P1319104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc25f47498112484c7c2e1a92be24b376ae96ec93a54595d4c3c27303763a903. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/US85P1319105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993dce3421c4fabe48cbf9a67b5332544461805066f5a3c2cea88d72b6957f6d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/US85P1319107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe4fb8d50aaf3f784fdaeb28e3e2daa01668d26331d0a4b419d3db5a520d70f. 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/US85P1319109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9a4ee89d7f30fe52def00df729976f558611ae08d1576b4489ea1f9f213a3a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US85P1319110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76e109d81bed76f621e082070547c6b4c47178bd5ae454e3a78ea0c424153b3. 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/US85P1319111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5462b8ff4fe535665c8b2272214b4eb524154879f835d9d625bd223f3c7791. 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/US85P1319112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197a6fbf417eef965157279d3322f9a1625ba30f26588a26aadc94405db2cd3c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:03:58Z), 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/US85P1319113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c5c01aab13712ac1da7039e05dcd547c2ab8a5324e11eee545a1d9dfb6c463. 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/US85P1319114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164f3b43b4826e7337247fcebc70eb1b50b4ad92574dced011d07f1e5366acf8. 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/US85P1319115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24a1047b46ef209a8b7b301607c2b2d6a876a78370852e7b73855c3412c04e5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US85P1319116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d23d7a2c279b7fb3361c03e2bb52b706177916a459fdedca157b45e4b7151ff. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US85P1523601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f625556ff14c9295aba5798ed8f214ed81d71f322ca078ea3c5e610a8a3426b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US85P1523602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad651affca1f236d86d311c15fe261cc27999c2429f79fcc2084f20905480019. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/US85P1523603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c88671039b5653fe33461e508c74952da8049ff05dc2918dd82ac6b42de615. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/US85P1523604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c429e044d89f458608fc25565b7291c4aa678340b0f72713dd054e7b4fe25d7. 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/US85P1523605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865b2efcac0059e57221abc62b3aac8519dab2a69fb3da860ad487cb529f5899. 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/US85P1523607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3124c6cd3efa92989fea6d9b0896faef7a3346cd9814927d3baa5c74e98b53e6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US85P1523608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb708cf455ee63734660f065cdf76c57a82b7f3557c878a76beb3b81be0eafa54. 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/US85P1523609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc8ace05411e0d3904dd13abf45cd58ff37c7fd5ad858084311087c3ca3e2cf. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/US85P1523610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07772adb60c4006b908be4ce2db948796af1f04661d5fab7b4a0fca761281b5. 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/US85P1523611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468f0b90d9ec77cb54bf2854953737139a084eccd749b7d5db1605d083732943. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US85P1523612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e7e60ae892b0dea6950db2725101a66dd9816cbe4dd11bc4fbf3f9f0d1a8d1. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/US85P1523614.