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 0x8bf69d1f33e170a50ff04e7b851f2d0cbe1867a1b76a7260cd320204e1c914df. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa6e8ccc-25ab-41b1-bf8b-e537ce95f31d.json and https://artists.proofprofile.net/proofs/artist/aa6e8ccc-25ab-41b1-bf8b-e537ce95f31d.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 0xcdd273209eeeac5e5ff64255d99a4f24345bc99fefd25143e5cc7cb5d9d20d43. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:08:24Z), 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/SGW502350705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd942d9b50730eec5f3561fab002010d71dd94d16151e5aed21a566148632e0. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:09:49Z), 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/GXBAV2317685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0617274a76c593019d717d58a19bba1cf10321a014072bb9600689dbce0d3d33. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:17:09Z), 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/GXBAV2358626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b4749e665d9a60651ec25e33ef4a70a152998d1b1163adcaa19ff6df94d92f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXBAV2366033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8d9ac97445416eda8b0c894481ef4600e01ae5b837e08b1d75c2f637f327ff. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T11:59:59Z), 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/GXBAV2387214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19615d870e4ce4ec61f3f4be9e755446139ff046d51fda6ac4d2945616ebefd3. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:53:25Z), 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/GXBAV2397771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecddc829a0f4043ac1282453f4d2f4838935393f6b0fad4fea5447988c104ca2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:29:57Z), 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/GXBAV2490106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c56fbd706e4dc2bf4aeb845bee6f0f7d4ae7b60cd9b62c700499a89927502e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GXBAV2487374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d98229b9218d1c25b797448fdcbb5e31bf5a5f754848b76aa8ebeb5d9a33292. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:41:38Z), 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/SGB502428401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fab9d36534d65ad68c8cbe4c5fc505288c13d074b3d1fca8356864475c4214. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SGB502444372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cd8ae0c893b1f4741300a354884efd572d83f3192e3bdaaa3c9707c3893b7e. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:48:05Z), 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/GXD7G2287718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808d6f7aff15c5aeadcf32ba7eb7b48f7b19d846ed9013ed8d5584d99da8c09b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXD7G2276061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda6e8f05ccf58074f293b6a653618b7d26d3b1b7d1262f4ba32b817de5b1567. 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/AEA3A2211015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb167ef28d1b68ef750c49e790a84a267564469ddcdf061740a6dcb861d7aa9. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:32:03Z), 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/QZZ782418773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253e39f70c9b3571fa63d77d20b76204b9b7c0f7f34a6d20f1f4941a3d1de4d0. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:39:46Z), 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/SGW502287077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a739910acb002249cd70433c60c0320d62200630687e304680ff639ca195ce5. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:55:31Z), 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/SGW502207928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dde9f8b11f9ddfa8ae1afdc3a2a0f1b84bf1b4f12b7cc59fb2a925e68a4f9e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAJD2590402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc301da919b55df3c3899d2c3f7d02c751849499b5b7306653cacd9c0182d4132. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/GXBAV2544282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeda34ed465444642fc910f2a6b34f60bb7933a149b2d4c7cd6e53dabd115752. 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/GXBAV2527403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0547d66d4a2f5da1f543d8c20b852a3371e66fd9de7bd57f6a486c752bc518aa. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:11:56Z), 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/GXBAV2542357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa09c5c6f10981e55bc2aeea4fc9b377e8c2248728d4426133b98c8a10d49abc. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GXD7G2565094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d37cfa24b413f58e56759fef1b74cc387cc3b5c72089eb2467671d417543e3. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/GXD7G2541294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b7260b811cf120ccc626ca601c31bcdad66839092a73f8ed2503c692e0b1c4. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:51:48Z), 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/SGW502554331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd254a69b0a503fd1278873aa173a0af82de17cfe024a74daf053f663d525e5a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:21:11Z), 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/SGW502532327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706c4966009b7dfcba65002a86fcf3886fe7002dfd6fae6d635b8316b04dc877. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTVM2511312.