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 0xffc5c0c78eaa736138b2ebd85b45e99855e23c03350af72d2f9587ef3793fec4. 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/a0407eeb-2cce-4a22-b0c8-3fabcc80cbf4.json and https://artists.proofprofile.net/proofs/artist/a0407eeb-2cce-4a22-b0c8-3fabcc80cbf4.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 0x3c9c4d2896bd99fb2e4e16c98b92092d51ae59b542e933e8bd4cf056b9b739d2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR2X42211765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22f528d7e3655b6d4a5c4e6aab9e596225bdd28163235b947abb01699a51e91. 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/FRX872178571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe036e53493317e71399957da731eb350748e249c348035dc6b13cd7c306a71d4. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FR2X42211766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92fec4699356eda822f7d7aa44f24fc73d350f378804a2ed08d8e3c09760b5b. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/DGA062230038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fb8f8719dbb1266b50b95e9f53c875b6189fe64e6842af63f48eb79f9c3c5c. 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/USA2P2333439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fb8f8719dbb1266b50b95e9f53c875b6189fe64e6842af63f48eb79f9c3c5c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USA2P2333439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1914f26139e643c045948d13b03d7f6a1fed68241db69d37af4d99f8879b652. 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/DGA092325574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b50830f72e3394982d42aebc0b7b63bcd63bbc617a026bb4b67ed44c324ef67. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DGA0L2310944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1914f26139e643c045948d13b03d7f6a1fed68241db69d37af4d99f8879b652. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DGA092325574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0ee09f2f66a4742332930bad2599d6438d58e0b76136a143e8521fbf396757. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0L2310945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d112620a5ce26f261c41cee1444f57048b1116a62634a3bd11a7af1f31c0ad. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA0M2369495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af4b5ecd01ebbb6907687a22c5aa86152f9175206ff9b8e36df2217858cc42a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DGA0L2310946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c47e562cfe43b61ef5fa7e835f67727eb836c5f2fbe54e72f3754228af3cc48. 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/DGA0L2310947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18c86f7095683831f09d8953be05731bd18ef71481698b7617a60112f936773. 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/CH6542425443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea9e42aadaf2be72ea101382e12ec27748b5467a610b7ae9ae3c3348166c70a. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/FR10S2588116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f8ee14471fa8b913dfa1547dd77e16fc7e2ca196b943058367250e158588cc. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCAJZ2580035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936c1d6aea00970a5a1b57db6fcbcc181dfbde15f1e903feebabc2ec8502d395. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:51:57Z), 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/QMFME2552123.