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 0xf58968e55d982693ac8cd02b750924950a667b60e3744649c99bee0b48aec7b0. 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/028669f0-3fe4-4dfb-b3cb-619e6c258f2b.json and https://artists.proofprofile.net/proofs/artist/028669f0-3fe4-4dfb-b3cb-619e6c258f2b.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 0x0620255dc197ac5e1c89f4ac1f37aa9f2b54bd474d0d56de52eafb8f65470521. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCAIT2434359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe500fc3ecd4f308e24599318ae8a0375c629edca256d200dd18e84836b72dc87. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:21:51Z), 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/TCAIT2465388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca11cbae8cae92645993e2b38b38d089601e3656097c08cc247f26ea0aefdadd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAIT2465326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a5e6ae3a0783347cad28879578cae508acc9a881f7d286bae5dbd019caf3cc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:57:21Z), 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/TCAIT2465405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a66789f620c19673501ebc590a35ff207f61fddd8ad39f0fbf17d8081e02a4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAIT2464841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6e624d95198d46da51f3bf3f81e5cfac69c09bd6cc6c7a8beb6b57fd0ef1df. 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/TCAIT2469725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f3600faa4fafda83a37e84c85455eafe04a87fd9018cb808beecd3089878c2. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAIT2469732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebaecaa840313fe0fd66e2d119dc6c7b0840da8a9ad0e8a445e686dfbb9e288. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:15:58Z), 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/TCAIT2469738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e628c67acb5244d4f8750933f2c3c90ac22528eeb051cb679f7e2e4ec691c5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:33:16Z), 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/TCAIT2469742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6a4e4c91d89384e4454f049fab25358119797e986bdd576aa282e0fa4fc22f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAIT2469745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb892ceaa07ba8b742aa9c9e281ab3249e964031b868525d8ada0db719d6739d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:40:40Z), 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/TCAIU2469747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe061074931465d11df54fe01b8554e1ced9e0215bf89401b0069abf201988e95. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAIT2469750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fe0f0192cab66fcf0445ea15f45b13d3cf801d478d71ff91b0eb5d0453db95. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAIU2469753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e4e781c48e82ff2a39643cb18b6f27614c90974fac28acbe19c1979b523461. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:36:32Z), 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/TCAIU2469756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dc3f445fef710a3ba89fd4f5882106ff0d6d48cd322f0fdad65ba186585779. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:29:39Z), 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/TCAIU2469764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba61559f8e215f3cefb510ac5aec04004a072118d741bf6950aeb2642e628a06. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAIT2469770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a6fdcad697b531bf9d51404724f646bd93d9ccc5b6f5fde0e53bbf400335b5. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:44:51Z), 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/TCAIT2468882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4d93e78e9c73ed71b511d1fff111f6fdf7eb073a50874499410dd7c8f80e19. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:52:48Z), 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/TCAIT2468744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb07deb695c94b2164580f9cb30c2eeeca36439e7cc894f0307bcf6b7fa03a18. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAIT2468976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea40beeeec50291392f65ab6d82030feadb739840a334a8da835b791ebe1a2a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAIU2468543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe489457669f36a97f8e3906e4dfff8ccacea7c3c69921ba57ceadcecd84d97cb. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAIT2468792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80720c523848b9cb3063bf4e19c0b7d608e5db5b395245f1e423ba7cfdefdc32. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:05:53Z), 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/TCAIT2469169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaee56116f0158e18461f40c52e1c2124e8d40ced73402a9d6e7e16d1898c87e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:40Z), 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/TCAIU2468932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe0ef4f7324e71abecc0856f24214a41a5a360c8f6c4ac7fcad3ca7ea14dd04. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:16:15Z), 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/TCAIV2469007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441e0969ab8f80f1ae32aa23670fa3e9dfafd492b8403479ba2c795d3b46401f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:34:42Z), 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/TCAIU2468850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275c234042ed548cf6183772a1417f636d39992e349b9d27cbf407371b6e54a7. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/TCAIT2468608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b6ab9dabee4ccf19f002f8911b6230865cbf6d9875b80020340215be084cae. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:10:56Z), 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/TCAIT2468494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe831c2612afe3be3266dbb34f8a7cc72af93382536f8771d39afcad762df6d58. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:50:49Z), 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/TCAIU2468681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b27b876c83c367aa8ecb44c7a128652eea16c322128ea82310dda6b6bdf7b14. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:28:20Z), 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/TCAIU2468412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a5017c20a70d9fc864fc355fc12217dc2f37b4ca0d142c285be7be9fc1e02c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCAIT2468813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb88dfff446c0dcbabad8454f161df2aaf58daf8d19a2c9857e07ba7faf083f5. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:31:55Z), 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/TCAIT2468559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfb80a9db33447e6b99092a66cf00a0dcb1431bd90b0d98e6062a33555c80b6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAIU2469040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b77188f2f70eb0c3fa718628110a7f9bb7662b826b98d1535c2a60344638651. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAIU2468439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe42e37db58b438b7af2ecb7eae78a3b50bb7eb36115dcca054e2bdec5c48e62. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAIU2469230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23cca8afb8caf2343f6b35291e85e40be325160f379bac496befc025ed0d300. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:38:30Z), 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/TCAIT2469084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744c47806a022b91d1e60dc3f3efe4f07d64c66c67628510261eee08c43f300d. 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/TCAIU2468464.