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 0xe7ca29f020715436df5482cad52626f1bc4d8ff4901c6a577c0835242c0dbe46. 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/1a7a2680-5185-4d33-ab9d-e4f757ec8994.json and https://artists.proofprofile.net/proofs/artist/1a7a2680-5185-4d33-ab9d-e4f757ec8994.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 0x2497a84677bbb26b14e54fbe886d98a340ef7e928d776b8182ad6de78dc61e4c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PL59G2300321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e77b1c09bb2735a63c5f8019fbb5bc4f7df284ab2a4cc31a9a37c70d3f32e94. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PL2DY2400243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09f8e81870f7e3e85d558c64bf4b96049bb5c27558e574c5468f772d00d15c2. 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/PL2DY2400275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7400ec97b50be10d66530fe5012e5d76ad8fc8f7ebd03d7921fdae1a7f076d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PL2DY2400272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdcf7d20a75e363fd756980be5c4ffba469c92f2fc3bab52997163dd0643175. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLUM72400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eab95358259aa23ba3ac76f83d3c493ae236b7b1bbbf2f0fe99d462a7552681. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLUM72400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0555d748bc5fd36289a26b410921b729caa38ae335c773a514f57d7062f58f54. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PL2DY2400256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e77b1c09bb2735a63c5f8019fbb5bc4f7df284ab2a4cc31a9a37c70d3f32e94. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PL2DY2400243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa88265c5d431a644a56494bceb86cd830d7c6f4434316d90d59a1fbc3961381. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/PL2DY2400273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a4e7e12bd66e97f9192a3b5718b2799866dca7da5a684eec8e1f4d6f5cd116. 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/PL2DY2400267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f064be728d725c7c807bb0c32f70eaa71dd33859a3f62ca43d4c31ecd7defb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PL2DY2400271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bea9a0a1d44fd46011d853c6dc3c4133cff85205cf1a2f96d97b64389be471a. 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/PL2DY2500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9885aae04acb4db74bb911b1fec70efe3fd95bc8bb07864dc371e432ec18cc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PL2DY2400499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca3eb0824e3c1fef9ec8f569d65cb4a4293c77c40ecc0f869346c85c74c053c. 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/PL2DY2400470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbf998eaf8bde384c0e74bd8c767d454639d8f30cebcdda23c0e42b96b7c14a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PL2DY2400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e63929a8e2876f341b44b05b6f4f9bad4bbdbea77426571a4e0f43b4d63025b. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:10:51Z), 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/PL2DY2400501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca3eb0824e3c1fef9ec8f569d65cb4a4293c77c40ecc0f869346c85c74c053c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PL2DY2400470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0555d748bc5fd36289a26b410921b729caa38ae335c773a514f57d7062f58f54. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/PL2DY2400256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdcf7d20a75e363fd756980be5c4ffba469c92f2fc3bab52997163dd0643175. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLUM72400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814136d0fd13cf75f478e230d8f36574947dc711a1b1c4232267bb21d8f692c3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PL59G2200296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1b1ee3db090865788718ed786eeab037a6bf3b58e88972be0a3ef1f999c526. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/PLC062386834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29da461af4d6be80b96c8f3fe35417963b11580b99366f1aff024fe36bbdd7ec. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/PLC062386843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f38a83f28c5d332f37dd1b439cf04a70bba98d53951cb5dcfcf1046f56ef5e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLC062386363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc69f136193a0f8b4e13199bbd534529fee1311f3817e638511a2c64f7eb403. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PLC062386844.