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 0x523e6e67be518bbd0f051d92137edd31208d638045e62108abdeafc2987ec42f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32fe79cc-8243-441c-9136-522555d07b8c.json and https://artists.proofprofile.net/proofs/artist/32fe79cc-8243-441c-9136-522555d07b8c.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 0x69226d5e5f4ba5b8a158a77009f6d67890b57afa5b34d13721c28c7ccb35618c. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/UKP3G2004855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814b7f293ecdba53892419553f2097385b66710928cbf3f1b7958a2510cbe2a6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UKP3G2004853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c68cf0136b29dfdd1973004d0c7a3841699ce9acfa9e7a431063029acb3838. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:19:28Z), 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/UKP3G2004863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdc9da4372497ddc83cbcd3e093be1005f7040811e77ad52cf2d3e4cbe9eed6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/UKP3G2004888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c3d0c37be60224a90d2dad6b41268acab601b2d485bcbd8abaad4372444f52. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/UKP3G2004881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe172879973605a15c776338c060975975ba01e31a1b176e658dbd62d242d7bd1. 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/UKP3G2004847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ce0548195ff4ce99446b4f2e903c678637a12aed2637eb8fbd5af6d63163b5. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:18:33Z), 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/UKP3G2004903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb669415d52bce67b0eb2c95beabe7cd186d0e3687995bd6e992c83261a5899ad. 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/UKP3G2007601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b091fee55fd140b250b25404516305af054ff6cc7938c39f7649148e25c74e7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UKP3G2007611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7790c580aad0ab0a904a884057996acee1969ca0b004be811380b13d1393e924. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UKP3G2004906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95ce34f0dda9bdba2d5a7b178b026363d4f4597f3de3c826f87e6c57dfa1d24. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UKP3G2007617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c6bcac6ce778667d13976711ba84abc772e0666a8e4440fa0fc11e90c0a15c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UKP3G2007605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228009f91b5e7c418652bda2c5ea10a458d7a1721bb4005fc4f9d9bf8c855272. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/UKP3G2004898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a3cc0ec9c9e40072fa41d6299b5a48a85c8e86d39c9e2af329c8ecf2de25e7. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/UKP3G2004897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51b7de9423d18fe2ca60912303b214b52036888d914a5f4380ed0f30d800f86. 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/UKP3G2007634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd388d1e6ba900db4f9c70bd52a8d4fefc99feda2f646e12e7563092959b39fc7. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:59:38Z), 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/UKP3G2009535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61aa55413ce8fa310c4a303dccdae1f979df38d69dd03f5f292aa80472e7bb2. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/UKP3G2009539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a5f228e416a79e771154e129de471b54f8688c49cacdbd0d426fa18649f44c. 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/UKP3G2009536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c951caa0e6328c4f4b1515c4e192a7fb2bd09257d385060a90f7e24c27d294a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:52:17Z), 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/UKP3G2009540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5af7d6645cb6d4dcc7b32e42a20f1c807f46379a81c9aabe744a5f234972698. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/UKP3G2004878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16b235c9b6d913516153b71f40eb2fe6632871c224fb8177d4c2b4ca2fb0af7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:17:14Z), 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/UKP3G2010506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15495162dbdf1e8be8489d4e8ec82678846c324529328f587bbda407eca1246. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UKP3G2004848.