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 0x2f912c7b0e2034c1c313679b9ad7e70184c63c1f958c920c679ac7dcd232981a. 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/d9b1a762-ed25-4968-ac03-c9aa20d682b3.json and https://artists.proofprofile.net/proofs/artist/d9b1a762-ed25-4968-ac03-c9aa20d682b3.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 0xe2e100df8a1b4e0a8c70fd9c549a3aaefcabb2d7eff445f0bf89dd664745e3fa. 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/QMRSZ2302427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dcead01760fb4baf2485546eaafb52a1759439fafd08593028d0216c4502d1. 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/QMRSZ1300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2f720212b7ee2d24dfa428b83161f1499611ef685cff571e08ec30d8a89a65. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DGA0H2411177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb075463b0b03784b06e121d252998335d7c162986ac5c0565ebecc778a8dc4b3. 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/DGA092448480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ea9eef83fead8a5ecb18ce75acd9340ae1f64dec32144fa73ae608e758e9cd. 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/DGA062486358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b8debfc08cdfd2b0a09f91afbce5d57e51d8028521789ae5d4b4a19f6cde55. 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/DGA062468716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5fcd5fcb0d982f12741087e7f3a6bc0317bec004c6eff8393a8358d382fdab. 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/DGA062407973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea36058fca3c8a88ea0d7165c4f8d177c26b7d341b1c7fc3aa59290d44fa109. 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/DGA052412931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf09b97175f8d1cee46eba9b9c538d874960eab299fcb49db4c7219625e17316. 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/FRX872426775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92e9abaa9abeed8b7db7c9a8401a06ce8d213f62d959532172d92fb0b2d75d8. 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/FRX762440031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292786fc111e0528de747433ee4428bd184688ec0c5bcc1a2a92700fbc1aa292. 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/FRX452447433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8591eeb0ba7a11e8562245e981b44df1b09ccfe0e93b938400559268f6d263da. 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/FRX452447357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dfd9d25752cf78f12593745e003505c4646dc017272aed544621c26124f314. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX282432350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c90e896141c1bfbbad862de898f8932ad18d5368b81cd9c43f60936e1cc488. 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/FRX282432349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c238dce4fe9ad6b0c5d2caa466c1024fdccf0a22d85f3eca81101afff7f62f7. 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/FR2X42413978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2566b16b8b776a5c03a21910e28fdf59805217fd26b288bb9410c8fede1c0aab. 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/DGA0L2305563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1348cdc63c455039a275d50c1b03a1eab993a3b471ed26d2dd84472d2618ee0f. 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/DGA0M2384128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb2d07a1148c0c7d66192ebb6306e1069aa81ef5d2400c52bc2e8a17faea647. 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/DGA0M2320647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5ae5edfb9c6c72ac607f76f086ae8d2695fc96f0c1d2191b7e37fd40b22048. 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/DGA082387127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8557c916d258bae18e8fe86367c7aeba36d597106a4a656f35232562fa11ac1. 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/DGA082355869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf962974a9a92cfe8b18c0694c9e0d8af3d1994728ecbd3cda27424a25788479. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DGA082317221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb92e329c9d2bfea98d44681db1572542cc8817964aec8269129c6bb459a2b3f. 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/DGA052051281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9864dfb35c96625be3d8efc747ea04f7f265dc90b52167d82da7a716eeedccb. 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/FRX762053395.