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 0x198d087fad1b7be0d983ba2bfe2d8858fee1922aa638446aa05b77caf512103c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc88651c-d29c-437e-ba38-8c1e425cc5ca.json and https://artists.proofprofile.net/proofs/artist/dc88651c-d29c-437e-ba38-8c1e425cc5ca.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 0x083753220b5abb38ba7a39d89a470be1752fe88d85795ee979d308126a6c942f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/CH6542016323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ced569bbd0148f7c8eb742fa130b4c91c3e0c4c929ddc6dd0510f95a70ca408. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/CH6541646468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3900e03c66ffafb67d459df8763a1cbff44781bb23806ac28d7b83bf918d6ff1. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:54:13Z), 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/CH6541646469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00774b40320689451b2fe5fc9b3759c41a69e05b2e984291daafbdf7f278221. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:08:41Z), 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/CH6542012460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cad33b1952a28db6761299982097c351f1d51802330cd3cf220e504c31705f. 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/CH6542061465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cdac76d30cf55615e4e21c43939c87450062fbe79e0aa8687ee0677a49148e. 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/CH6542240250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7093cd851a34cd643add7e5695eb560f2fa95a0c928640f4e99a2cc9f8c14dc3. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/CH6541640609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f47db4a9f1480e078424515e3c3c24d54b9cef6537766f2637e5fb0ec3f69f. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/CH6542121266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5236301244c863d542cd2860434818d947874d34f805b10301fe90d33ad2ccc5. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:17:46Z), 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/CH6542161946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b40b9a7b36c564e45a01fb394c5c987c1f9e11522e24c2a3b112c3a3118769. 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/CH6541680150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6e748ad2c229f0e1708a4a4625bddd9e87c643d5e75d61b5417cc7bebba433. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:20:33Z), 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/CH6542233449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff11db7fc39c4979b51bbfccb5a934fea57f87c80a4f484061cd60a981af1000. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/CH6542255564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaf78eef31761ca484a030ea7f35d2beccb5909af4c8976b580c19e67ed8acb. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:31:33Z), 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/CH6542287850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7e60877c78b0d6ba948b93a89b538f6a27f8f20a4060df04035b21286fc324. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/CH6542354723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46674724fd26dc907f306964bdc6cb8644765d3768261b573202126f781585a5. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/CH6542358328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43ad6880595d6e97adf0945a7ad753d427771c147126cf874196ca7ce20e684. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/CH6542369158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195d576f5c947d3cafa15aea2b03f162c271a06ccdc5e50d4e1051820642043b. 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/TCAIT2482606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04752583ebf70e77c899651b3a47a604e819fb633a3f2d8041aaa1b68bb4384. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NEKSW2400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82a727f10e33d70960d5d00bbef167a9b9242886f91cb0b4135169b2aae6c32. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:01:12Z), 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/NEKSW2400523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c36f636d4612ade5ba4c9d85a1bed90b8e2035c6538665587fcb65c04fe568. 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/TCAJL2569433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776262e63945d350d0a2a8fc2444b285ca5b6ad81f9e6742667370ed10cbcf68. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAJL2569472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e645910271e8940030b06dce97bf22f6842971e62f3d43beebf068ead8c599f. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TCAJL2569506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b66c691c078faa21a52b9bada36c06544266da5346c9d9356f41a999f0383b. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/TCAJM2569528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8e5fdf0397c66b31343e3d8da31a5ae759f5adcbd4077dda4b97981a7fd515. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAJL2569538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f15240a87536a418abb7836cce7e0cfa6fc619bfcf226759da0b31b5f7a637. 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/TCAJL2569545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06a89c830269cf648db4af2bf4b0f5057a2790d499c634763f0b5726ae37333. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:37:32Z), 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/TCAJL2569551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb597fbfc2534708fb64ae5e8c6b3ca5b7b648a6f42013332c0f12a7678359bf6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAJL2569562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83532229b71eddfde90245e27864b9d21a65005e0c72acd3a88861bf93e30300. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCAJZ2548077.