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 0x28ce487ce5c0b6cbc6ab0de46ce8b2232453dcefc5c24a28b05130c4cf5f9a29. 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/0eaa6d35-cf7d-48db-91f8-82df6abc302c.json and https://artists.proofprofile.net/proofs/artist/0eaa6d35-cf7d-48db-91f8-82df6abc302c.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 0x4d737c69bc47e887c02368b21b32fc6f2e35bc07b1d4dba148e05ad4a3f71d27. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USX9P2068478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa374ea46712a79436f500e642bf0588a5e69b8f1b8b4b30761d80d7e9ec9b979. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USX9P2095712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b9f863c01c32706fd7d9ec83927449174f3a8f0116c5f3adfe0a76b961e1c3. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/AUMEV2151675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fcff05ed75cd77897051f4f7f592cd37d28d29fd3adbda4418433bfbfcbd61. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AUMEV2151677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2cb7e0638b85e4e1d95a6384a308b152064db7a9d42f1b561a2f90d7a763fd. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AUMEV2145728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6c0e0d46240febac2604d6f0651fd4de24e7975ca8ebd2e5ef5f67037a2f1c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/AUMEV2151678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdb388c67757f24cd6a59a5618256d79efb1987123722e5f4397fa93069ae4e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/AUMEV2176273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5c2e182f92637d03275a510ec82693205f65d95e6cf1fed6c6c080dbd2894a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUMEV2176275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01602b810fe728cb4541c67f8e993e4b89f74609d33458c2fb0a8ba82eb40ee. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/AUMEV2229142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3b172daf510acf5723af96d27b60b075961ebed37285760ea237c838675cba. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:46:27Z), 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/AUMEV2250607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a49ea4db62d2356d872d9d29a2b9e72e92168d5dec100a6c379a3216996e14e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/AUGBT2211591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3879ebb97e7f759457e66be90c573a884c43078247855c5e92d673974c154d. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/AUMEV2491683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc60a7fe639b57d0db6f7f5b1bea8241c3da9c898a67f196b87c665bfbc3af36. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUGBT2428625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76aba952f843134bf0d532c4c92cb2095e1d89ba72c2772177bda8cf3d3a39dc. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/AUGBT2429305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89246c1828d90eb7626765fcbc954b204f8d4cccbac8f3c90707f907e0f7b4a4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUGBT2429309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc764e24f7ae5972ab36e99626756de22ffc1c1cdd4c2ac9ab81ae40bdacae2e0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/AUGBT2429310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910523c0f193873e29dcbe49a81c02b808d2fba2dcce78bd47dec051df5c0563. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/AUGBT2429311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ef4ae4d5cff9b51c9570b0f002413feabfdecc61159b872781b0fc763b7f4b. 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/AUBEC2324368.