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 0x3c9db5f4e2cb333923eac4c38fb7612086b58d43113a353b245d98516e42f6e6. 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/e11cb6e0-60f3-4e48-9be2-ba1290f130bc.json and https://artists.proofprofile.net/proofs/artist/e11cb6e0-60f3-4e48-9be2-ba1290f130bc.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 0x6d0cda1060b9db985e24ae79e791b220ad9c0e2bf08ac409ff21f5156cbda80e. 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/USY252324697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd5c3bee5cf9457d4714dddd7250b2c6b5bccaed4c9e04c8dbf54056ac66981. 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/USY252324698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825003343b0da5adee3a329168a3e779308115a4589f48485f5001c7e2ff0900. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZFYW2133335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd06669cd7cbe72573e370373f8d8fde03c6aff69b7f65e29041401a2c49496. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZES71995874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a02abb6d98ca80a213d08bfca97c1cd7a459685d62930484641108e1b8e420. 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/QZARB1887213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe248de28cff7ff5f4161a1b517f0cb8f27a8426d4d3cf6ad66041798d40fe9b0. 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/QZARB1887214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0200e35b0bb5b61c0ee95f95cab42f7b8b4fdec155e85c0b3642aaacb05e58da. 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/QZFZ22032562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1824e5fc8a8ac81b7be8dc08c4bb9e31b5815d34f0aeb8e3bf1eab973e2128. 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/QZFZ22032566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16fec87b3abb05df596e4ea4abe08866cb5cfda46c79923f06603617b32af15. 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/QZFZ22032567.
How I Need You (A Place To Bury Strangers Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85e8fed258e514ff36e236359ba8696de117574a04db4632ebb59b06f420755. 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/USY252408271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6000c0de8bd762f173d07c3429a15084add53781b53e09798058403508f1be57. 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/USY252411742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99564f3fe3cc72923a47e0ce304309ea2fb558bb9b3f6808cdc2e35fcc0b6fe4. 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/USY252408272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7533f3e8a4d2eb9457cb75948fe4f8458ca0b5b2b29731749c936bff6f704360. 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/USY252408274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ea8649315f27739502c93eceb4c335d2d4655657e1717a5803d3db74c84df4. 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/QZMEQ2262875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35864cacaf06e572c2b6c1b54f8f71580c42cb6427b9d014996aa46a8a75923d. 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/QZFYZ2015408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bd3aee984a95093d0606e056789379a571d954c5d5a030a40f84f3f82d2cb2. 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/QZMER2165298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98ede096f0711b9c5312a19fe70f1f1a4dd60b3d4bb3310944f76ebec1608b9. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QZFZ22031327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4d5ceceda267c0be84789f7089f565d923a3c456cade84718fd4cdc551a33a. 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/QZFZ22031328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2479be2b13a8555f59ab0ae1a16ff53ae7fb1e1c3ea8431e30cf6dc046e471. 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/QZFZ22031329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d3a4f9ab95e8adc023c9070c110627cd91393c2bcf6e112f40c96b93c77299. 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/CH6541969146.