1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x3647eb417898d91167dddbfa15e5062d85630ed5816ab02b4106a7de3a63578d. 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/1ea72fda-6d15-4b11-a623-98fb567c3b90.json and https://artists.proofprofile.net/proofs/artist/1ea72fda-6d15-4b11-a623-98fb567c3b90.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 → block OTSBitcoinBlock must exist at that height 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 0x3c78f3491702253ed18ff3136563c537dbe986220edd994957e3e62ef48287a4. 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/CZA167100450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53b24a90b3b3991dd959d40411e06fc8933eddb8cf491876241d88d4f9acb1e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CZA167900371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079d705649bdac2a70188a7b6d51e8c7920740309265676469d30ed3bb011a70. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/CZA167900375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ace01573c96782336045574c084f9601301b0201255860449f7afbf1eb635c. 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/CZA168400409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1399ffe1c148c3100f8a73cc2b0e5ed70bdd0c950ab2250851b62cbc54889fd. 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/CZA168400414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30bc5133920c10387923457d73471ad9a84bdd162e3c5314974e7653a5211a0. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/CZA168200406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bec52be8340ad2176028d334c6de26f0785ff6f858a0a8503d8f9119306e95. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CZA161000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ab00f13f81d260016a47563e1a465d342468433cf9ebe3955ddbdda2553ae8. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/CZA168900251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbf7333378ce70f9609f9a201237f9af41e8ce6f84178012f51a8b7b83130d6. 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/CZA166900537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb13f260d81d3cde2dca90ae1d3d9e4dac4d43f886d7da7682f8c5337b8fbd2b. 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/CZA167000494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d63be0de5646858d3b84ca016a589749b1a6e8ef40e91edc1e8767fa2cd5f6. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:16:51Z), 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/CZA167000490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaae337bee041d4dd86d6ea7974c5b78c706f219dd677264993eee61155110f2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:41:05Z), 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/CZA167000492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b19b8272a9a814dbd1cc39f36d615d283590ae5024987a16b47c1a98f20d79. 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/CZUM72200439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd1aa83cda1c1f41b19e0b8ed92daf88350edf857dc4eeb9103d74ffb1998bd. 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/CZA166900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795e2b8f0b78eeaabcce6b7f9a91062ea27b83f4c42c0157da6211ae557e165d. 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/CZA166900485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdeaebdbf79cad4127f8d5952925b1f28d8e3d03ea962dd13be2e62095a6b9e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CZA167000422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaae337bee041d4dd86d6ea7974c5b78c706f219dd677264993eee61155110f2. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:11Z), 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/CZA167000492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767d304826a479a6f3e3e6a415ed9df0291cbf1e9293acff8293e0261e122283. 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/CZA167000487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc213f3e3d6eb6459f26117a7c4928918e8283032b8888cb046feb5c2cef15555. 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/CZA166900538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873fc8ac1c517bf326105abd17643d6a3321c383dad4d7ee0de04742a2af91c3. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:04:46Z), 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/CZA166900535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d63be0de5646858d3b84ca016a589749b1a6e8ef40e91edc1e8767fa2cd5f6. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/CZA167000490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30658da9bcdaaf875bfd5e48715421e5bca8ad337f42175806f5567c00a9902a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CZA167000485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe5809caa52b222600e323674195edc873563ad767e9cfba0438b562628f39d. 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/CZA167100442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbe13bb3d814ae313778bbbfe9da04fbcf01108781093ae2d8f1b1d10893598. 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/CZA167100436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9481adfdfe2f246da66a03c31bdb2f8beefb79355ce84c6537d55c7f5d8e22. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/CZA167100448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932af776ecfc345fbda332e4950ff1a7806605360133e139fe8aa679976f5f45. 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/CZA167100452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bc1bfa03f42f16a89589f85194264b3cb0e304bb560d4a7a0e31a19300f48e. 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/CZA167100451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61f13fe59b03be051ec5fdba33c475279337709192427b3200e00e0157d1b41. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CZA167100432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6820de5b526f376a1501360978a9fc1a8c7a2617374f5409465388f3769a3ee. 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/CZA167100443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91dd52ccc569de979073a65a8b39fb8c2c03e6a5dd61dee5e897e98a5221f5e0. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/CZA167100615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffdf177da63c22717faaefb280cd4c6a6f1a35cb8b5cf16b50b1e08a3a831b7. 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/CZA167200488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843ead58a8a432b7284521f6585c6203630a11315c195b0bd054a1e100911fc3. 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/CZA167200879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6b551a90e088442a7d5093d3fba9ac05d5212e8030332153fecdbe5fd84598. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CZA160413648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031765f0f931b9cf474f6bfafb6e61857e05d1e453f594175748c8b24529f6f5. 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/CZA167200515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d158964058fea05dd12554d686c7a7cb76aa526e2df46f4c3e076624813e874. 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/CZA167200512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dcaec443ab7c0f426b8cd5cb5d5e6de9c3e0015a1532d60358965793551e0b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CZA167300428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef03a429cf212e20eb17bd765299181ed45eeac79ce5f9a3fef18e10bafe2b3. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CZA167300439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff7960fae5724f3b0735605f1eaf5bb14637dcade4f4c4351d3863bc8a677e7. 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/CZA167300441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53b24a90b3b3991dd959d40411e06fc8933eddb8cf491876241d88d4f9acb1e. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/CZA167900371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ef6cf8e40e5c34b9c5cb06ff1a32b40f173508f7c6b2334ab5dd87cf02c86e. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/CZA167500560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30bc5133920c10387923457d73471ad9a84bdd162e3c5314974e7653a5211a0. 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/CZA168200406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d360dab9e15156947bc4a3694866c7bffdd44b2cd3b9b8de755207eb47c6d1b. 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/CZA168800331.
Písničky pro veselé děti a jejich rodiče
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a467f185dead4f73d476b442b09d47583702974c3c54c8ef26349ce3a8e5a36. 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/CZA167200513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef03a429cf212e20eb17bd765299181ed45eeac79ce5f9a3fef18e10bafe2b3. 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/CZA167300439.