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 0xac5ddcef116dd76415e28ae949476f336e3392baf648727f111020958840f767. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17645405-0606-4691-bb4a-909e2fe1ab61.json and https://artists.proofprofile.net/proofs/artist/17645405-0606-4691-bb4a-909e2fe1ab61.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 0xb569793c706a53776636af25518446c838a486e201628465de76af29d554b0a6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZPLR2204362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b581f5c78a8bfb34871115402bee2da42266d92fe18a796a67f836a3bdb151. 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/QZPLR2204363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9bd02b3214cda8d3c796e3b12283de89cd421790fc72ecffc6d0684e600f66. 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/QZPLR2204365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d80ddd07bf6c68aaf57c46d86fb43530fb363d6969b5808f95719f72e84be0e. 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/QZPLR2204367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faae8f08548c3e7feb371c0beb695f20d36e0fd3f9b64f7f809e4df8939ff4e. 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/QZPLR2204370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e084886fbdec4d9b87474effb84218825a1778393a9f5506d2fa967fbbb0cc9. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/QZPLR2204364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599e941bd19d6bd6431c0fc99792a7af6c4d7fae6728e0f45973d245b81e6448. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZPLR2204366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe30542103060b250ebf6098b5b538ec7a77bd418de14f575cd9b600d6c6e635. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZPLR2204368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7000242abb5f349b829c2fcbb6b02968d0a0977dc3877ba13804fc1e0c48dddb. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZPLR2204369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6af7939ef26718b03c9e8c509a3456e7462c1f6e1dbd4ef27d6c3b7f0109be3. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZPLR2204371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c499053d2070c7ea7fe204f74c1adc842ca2a2bef633f83c8b987e408f664d. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZPLR2204372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c302dfa8bca4861be08410a39f43046742e58251b7792478d34de46c44516c. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZNWU2206494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3152751d01f391112f97e86b271ab64b835aa9dd8dcf28b22affb1cd16b8498e. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZPLR2204373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d600ee655b0db031e4a40c245c73263865ceeac862f4a648e50350390294bc. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZPLR2204374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3e2f896adc293fc3efcdab2eb4254bb7f154f291441a99e0065c5db6e84709. 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/QZNWR2161806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea7c38f974468a3df6deeb2fbbb3ef6dfaeee37d2bc39e284458cdde8d6257d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZNWR2161805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53d85d0ee38c3efb73fe7f9794b65943537c8d78e1cce1895ee0cf3e6ea6479. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZNWR2161807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a0c9c86aa14d99bc70f61ae02a8d0996c2a2bb2de5450516fe355b43461d0c. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/QZNWR2161808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d9b3c8aee34326550d522af6be2de14919f3e5812c873adb3199171cd0a477. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/QZNWR2161809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe51719fb8e2da6c96db2910137e8e0909cea3989eef28c0615d79b9219f623. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZNWR2161810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db347d3746e016ac66182246411ac751d2fc720f011eb26fd9a33f0ef5e4d1c. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZNWR2161811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc44daee64541f85694d9ca53ae881d447e993adb7bded81cd0595e4fa2200d. 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/QZK6H2477370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb086905dee5377137a4da6fa0f65b356478701115b672f7e02b78e75c713a63. 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/QZK6H2477372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bcb37493e923246705df8fbdda41a9ecb4d5228591660aa412de8b61b62696. 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/QZK6H2477374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b19d7997be187ba0db5f216722b4b387707b8bc9524fa19c34e06f4687ba574. 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/QZFZ62484839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6d89989af900886dd649d6bec5753a65aeaca87fe438580683cb26f8d1ec03. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZK6H2477371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf71ee0a38c72a4b5b2745eab3103850ed9af19470643065693cd179b78140c6. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZK6H2477373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b19d7997be187ba0db5f216722b4b387707b8bc9524fa19c34e06f4687ba574. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/QZFZ62484839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85eb48da0deee8691e37c73db2d39a87503d928d659c87b384fe8e99f749b4b2. 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/QZHN72307728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1fdfc1911ad054f6463bf5dc9d571f626e29eb5c3ce99be80ad625eccccfbd. 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/CH6542242902.