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 0x7ab45c4c3e4b995e4302905172e2bc17caee0f855e872661785d9996c58ba424. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6438ed58-8392-44e0-97cb-8038e1ba8d77.json and https://artists.proofprofile.net/proofs/artist/6438ed58-8392-44e0-97cb-8038e1ba8d77.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 0x6543a58331123ae29b5d2cea94691c39c69229d9c49c27ff0e5fa7d5d1ed274f. 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/PLF242107892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9f87eba2f511cb5580d91dd8c1df79e7236b9741f002ea3d9329b66e7290f7. 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/PLF242108074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1eff8dd4417e7da278d1f07a05a4fd8549c1da06523c9aad3b930fa9223b1e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLF242107600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5475c8e606d5abf8229e8cc4f736fc4f3ed517d219eccd255bee79b3ed7907. 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/PLF242107724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e5486553a3eb917e53dca090ea2ed7105f007477334158a633233a0249d2cf. 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/PLF242107957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb93cdb28e32bc69a5982bcd58ed6857689e462cc4aeca1550c62c74e34354d9. 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/PLF242108139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd7aff2bf5c27ce7b5b198ee48d8ddc196495a82af3bd59d3360fc9b5029312. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLF242108269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2faae15575df956257b5749bb961ab1338259d378bf9acbf82283e77fcffdcd6. 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/PLF241705682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc245d6d9d2c64cd93f68bac5b0c8762d97f668f67a2df4ed8e04601d779a368b. 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/PLF241705689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823376ace1f824917c397927186e864338aaf50e8db530ce3eed19daa966160c. 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/PLF241705690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa606bcfcd7e01f9cf23dfbbe5b4d89879bb3fe30418da3190c0bac2e5cfde7f8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLV402001025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef407f487017d048957afa63d94a4c91538a2a2501e1d62a706d67a11c08ab3. 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/PLV402000958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71da3a769686caf9adf710008938b817316741532cbf28e4d12225b8f4ab8cdd. 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/PLV402001038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a646306e26ead7762b9ead4ea03022745dddb0f81283621f53c7f132d68337. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLV402001067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5a2230dad19dda8167efd03ae7502e0c3c4f9b90744c7c73746eeac8d7b280. 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/PLV402001062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b213f3d4e3e6cebb8cb4742039f956a3796103c3f0ad1b267a696487fa30939. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLV402001069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8eaec0a3b6a39db63330c8f7ac445ce952ddaf3ee1b0fd92794f1abf3d36232. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLV402001070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7157527acc83758eb7531cc373585aaf47a6655fdc4ebe445444fbfccc74ff. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLV402001072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5bc5338b32c10b867bcfbbc7d072c7e47ae6a7ef3a26016e64ec8264877644. 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/PLV402000961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6d222f9c9f1af7c12a576822436af83f1f48cb1b4c58e9232a80adb1d5eeef. 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/PLV402001075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bbdc9ca6e641c2e586e7b22cbf1cafc5559121e2af34a6d8d3928ce5742800. 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/PLV402001077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca14ea9fde821cd8e08a385fdd7ab26ab8091920d1a55cd16ddb727034291497. 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/PLV402000670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663cadb918dedb3c3f6031b8497b5af9c3034d789a6c0d21eca2fd5eda702cd9. 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/PLV402000671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68630c381893434d36c1c496b38591bff13168866d824222fff850d5f10533c7. 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/PLV402000673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a10771ca671d80344ba96cee864ed32a9b3bc5bb02f255a5ef39f275abc40e. 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/PLV402000674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5458b1074062dc2b9a7eb665a49a769502fe6cefed9fa6920d7a191e0358976f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLV402000675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb330a86af4b926683b58fbdc469bcf3cde0982a02703c405fcb17cf4523e6bb2. 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/FR59R2336148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d8866cc09d03af58aa548a57d9cd5bdffdf35810122ffc40d7d05284be5ab5. 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/PL2DY2300951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156bc788468851f6deca903bb6966ddb2c8f0b0126194b6a371223c53e1e522f. 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/PL2DY2300952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f6574fc71d579a27015406cd7a7e78de74607b6afd84403425b8299ac379eb. 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/PL2DY2300954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98f58cc73bc23cb6ddddaa00f1e3421c3355e8230deec2296b65710546a75ec. 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/PLI362115000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f736fbaa4312d3b1eaa167d5c33c7e4b3c95d249778b1d6697aab3ee5fbad3. 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/PLF242210316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd405b197a3fcebcdfd364ff5b1c356d271b4d06003199b16ec5c6f0fc03c3e16. 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/PLF242210631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2821b36afd68b614c258965413c5ebd81ef87340c54fe96a3f1baa1d0f9fb7be. 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/PLF242007138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d317a0fad8638c31643f32a3f5706cbdd9c46ec4de529f6fdc46c002255e20a. 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/PLF242007133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a2ebb9153472fc445ca40d6ed66a1c35a8a2a0bb36d666ac370f21eb3c01d2. 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/PLF242007072.