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 0x43a3c484c2609f4bd556b3e386e2f5339084eea56f6280cba18317ebdd710177. 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/92f011b2-c061-4097-838e-8339e578e8d1.json and https://artists.proofprofile.net/proofs/artist/92f011b2-c061-4097-838e-8339e578e8d1.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 0xe93c49479d7e9b9f6191002df32ba7a14cb921df0f7ff0e64793a6e4628e32a0. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/DEHC60800252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38f8a36cf0873f7380a370945a2a8bfe9f2c66711ef045ed8f9180ff0b84676. 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/DEHC60800253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97cffb02c6a01fa446216b64f9460bb5c45d527ab2e24f67d84222dcc4011346. 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/DEHC60800255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76cf7334b3c216f15ef23932bf649f922bc8e04754c22668affad9acd38086c. 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/DEHC60800261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3649fc4e3667f0e5ac7fd72af0dc6e1a66d0e6c78a46101ae8c54071793350. 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/DEHC60800262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2635ff5af87ebef443b122494b799fa6e637ee5da1903eefd22a4be7c555b518. 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/DEHC60800264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7add7f590b0b9842ca8e459beeb446e6856fcf69f8c418a674c5420da9cbaefa. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/FRX872407839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa8d805dccc07264078fe8da4ac604efa538c2419560dee74a4975a68c85ff6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX872407836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb0085b9449e4ee638b56a7c4a7b814c90ecbc7aa138dcf8ada12669e7ac050. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX872407837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5c2494a49c1a49735e07aa6a42fdbbd54f25f50c866303f8f82b01fccae43b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:39:30Z), 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/DEQ022101907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad9717dbfdea75f7b4a4fbdd96509b3e687595e46f2aa53696339e95a54d619. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX872407838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2292a66248c7bbd6a957af8f4ffdf54c6df0034837a134dfcae471b6adc4d67a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FRX872407840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb7e8a359b2b180d24677711d4144bfb4d402a952e174e086152c64abcc76a6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DELJ82007887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ade746839e5e25462de354ba30e3b150cbc83e1bf507a6d33d6b9c20e90120. 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/FRX872407842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc36f78bafa904277aa038bc22c4ae5db43cc4c2ea43734caa437e3ffea83a6. 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/FRX872407843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebe4f46ca1e7b1da0ddc2987349ef40f1fa19c567f8f9a7aa3bc3f0cb7c90f8. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:04:14Z), 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/FRX872407844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bad9566a9cbbdc53c2a4d33f1cb24cce5adcc91a9fbe7ce1ae2550be48cc33c. 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/FRX872407845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5061b9972ee7debcd49ff418e5cb2130a3ccab1e1a05ee303ee76c1a1607b017. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:07:00Z), 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/DELJ82007443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0d41953eca083fe412f73960759023b6d63a51af9a83f5ebf05b9696df71ba. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:41:51Z), 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/FRX872407846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5024d658782f87c9c103ebeac6fa0f2ac7d89bf8a2e9cdd50e888b28bedc6f. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEZC62466817.