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 0x62b896a6f1e6806aecd13408ea2259926f85e127a735b55caba1e4071081aba8. 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/ee5c65d9-e41b-4bf4-8144-bfa288e63263.json and https://artists.proofprofile.net/proofs/artist/ee5c65d9-e41b-4bf4-8144-bfa288e63263.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 0xba074806fe22ee2904c44dabe6e365535bc568db02db34b2112cf4688c4b2582. 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/USQX92401235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c20689cbcb572405ff790d5d3958e6a7264e277a5d57ff5dbd59022ae136dae. 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/USQX92401234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5703f9be757da8e47d2db56935fb4b5ab78f243e296c19fbbdbc3d44237d24. 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/USQX92401233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1c5a08e8511bb0560ac2d33600898c4e5358f19ac10be5d6f8bcf712ab2cb0. 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/USQX92401232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fd9bca621e822190c3f54b623eea12560e60f6355eea329e6acb09039185ab. 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/USQX92401231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a90a6117173d96341c90ad005e71740039022aa2858a31d276b4d751da2e67. 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/USQX92306206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6d22409bafedd6fbbbfe1306de68cde33bc850fb7e3e1dd8e3b4184a683756. 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/USQX92306205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6751ac20e89dcfeea8467f43fc513f74ef17109b6e0c51a610a740709457b75b. 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/USQX92306204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3699ae2a03c5d852a05c34113a14a289f077839604991d777a04635cfb404948. 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/USQX92306203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39221462b5512b2798fe132f1f33e2ecc655c27aaeb96098978f1eceaa00231d. 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/USQX92304279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39221462b5512b2798fe132f1f33e2ecc655c27aaeb96098978f1eceaa00231d. 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/USQX92304279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b7b6924be5e19e000ed33c7fc652d7c01db653a0b0fdddda97d5804d878000. 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/USQX92304278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928d1998e378f36a500b290dd3aa24d876aca8aaefd6cb5121fe4d8407e96f17. 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/USQX92304277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e1937da2c48aac4285d873ec90a1ca2ee1c61bf934e51143fe90db7b7fed16. 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/USQX92206385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15e0b194913deed1b557401c133f5caff5ddd625a0ae50c8879d06d144db150. 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/USQX92206384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f9622c4de073a6d1d05694abba23a69f197c2011a3b1da589f66228aea7f14. 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/USQX92206383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8316ed64a4dd751c2112d269a1beb490a824fc970e2082c47d61593e995ac660. 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/USQX92206382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f039c446289a977e2028b3a929cd5ae77e51bf8ead2f585fd0578220ce28c4d. 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/USQX92204714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92feaf4e96dd74a5a572ae55c81557222c8d7d3187ddbad376c73640bd21a01. 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/USQX92204713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd123c78b61941ba1139581e7973d643dea7a6fb73cc2fdda378ef74fd64e7374. 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/USQX92204712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb98be7f1324a9364276113bc1afb0578ee1c1a4ed6dda914d93e1d1f69e25c3. 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/USQX92204711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05934b8ffe8d6de9a6994d92c7445a9c340c6edf61c9c69e58df8673e811aa30. 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/USQX92204710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf832401f67186adf63b70a84c3bec48052cba05ba2744873ae9b76a943976f0e. 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/USQX92202539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1665edc03e0c86a799bbcd0f0726397eb131618498182514174d68fcd4df75. 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/USQX92202536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7671d3bf24c0add272e1d5372eacbe2655982b2249c525d5c0797c5446a4f8. 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/USQX92202535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc57f49b31ead14d37fdbd9adfd94b3570653dad36a6d605fc1135857f76c3a. 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/USQX92104752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb1abb5a84ff4774ba448f15d9393ac1a7859b6960db10160438de5d3a7356b. 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/USQX92104751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c526087558aaae98b9dbf5b6ad3e56b342e92dabc972a430d935b087c47463. 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/USQX92104750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfbfae7957c390e3ff8332c5fb01c546d657e25843b6a36508ee2043b0b018d. 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/USQX92104749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770914d0bf078e0c64551b7a4ed34535fd2495ed7081b454404392fe8c735eb2. 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/USQX92104748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a9b9f0197538706ff4c60d10abec1fedffce1dc88cfb23b8b1fd2fa34ea44f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:21:09Z), 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/USQX92103056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f7abc28785e3f5d95d00a594e4d32c8f8c226eb5548acddf5ff5073586d06b. 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/USQX92103055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5295489bc6849a6a6b96f0b7dd000d7c793b2b9fd7938730314f97fa54b97fd. 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/USQX92103053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde1da8bd5aeaf4839da2ab2780bae0ba03fe36234a94e351474c6e256e1be75. 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/USQX92403019.