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 0x20b70590a18eba71795c1a06eca2a153f0256b7ba2d372af463bf20237e5cf5c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a48dd9bc-6a85-4634-87e1-ae34acb91c32.json and https://artists.proofprofile.net/proofs/artist/a48dd9bc-6a85-4634-87e1-ae34acb91c32.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 0x8b4a582f99c23f10aa8cfe56df10c273a1223a4fdca024191cf1ffc9cc111af9. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-17T00:12:39Z), 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/PLI365567680.
Kopalnia Niespodzianek: Mów do mnie Negro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41116d1cd1b881395b0eb0f17f1d74ae7f9da6827b1ede4096deae86707aec02. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/PLI365567590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43809db77c916fcb7837784767e45d3d5ee19270357642e72132992a96fa21c1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLI365567690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3bed5a9325058678b9a536365d0a8118f9b09cfada82ccea9dcd3cea3c44aa. 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/PLI365567700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d3739b97d18a30355ce1eb5b6c8fa62e06eab410edee972f0c24d2c5cc15bb. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/PLI365567710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21538c851e370cfd83d4d35432b9a6ba10592d34d7b41da253521262ad57fce. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:41:00Z), 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/PLI365567730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c639d63820ee2ba61e35c6c16bc6e804b825249db968604e192769f82953d85. 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/PLI365567740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7480d112dc22b226269305851b2226a685b28534dbb238cb9454e860019d39. 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/PLI365567750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e20ede9d01185302f95861f9091ff1b6fa8e4e86c3f5ff698c9a3e11af115ce. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/PLI365567800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22469c02d6d04f5f6a800ef434306d7ce6d0ff63ce66bda723f2a1cc75e5293a. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/PLI365565500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a795b9d7dac31743188632aef5638699d07314930d0ebe4139c619345ac6051. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:48:02Z), 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/PLI365565490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58a1fe0d56e4873cc9e74099054d05aec3b735e76c52531f3f54eae320f7e98. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:33:40Z), 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/PLI365565520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d272e8074a9c4bb45e8a57a61a8c736d7c5e7192d7929c0764f83c00290139. 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/PLI365565540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f1f84a590f7fe0e7f7d2d069fe7f7cad8d952dfa6e715f58bdf8b8b931e3fc. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/PLI365565630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58aa4aa6635ee0c11dc90736ae556d2f81b0bae426a71ba981d4929bf0cd0fc9. 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/PLI365565580.
Chciałbym umrzeć zagłaskany na śmierć (Seksualna czekolada II)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fa06ba93f4331657104eb4358ee34ef5be115215e78ab463299c216ceeb4b0. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:12:05Z), 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/PLI365571090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6e3d4052acd9f970607e3b8b25f68bf731615788e2fd924c63f6cc4932f0a0. 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/PLI365571080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77700bbe95188f9a8731f489b89eb77f090dc379ec251628432a56e67024dcd. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/PLI365571100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e9b25698233dcc50e76ec9556559ac0f1a3672f1a68b209812163128ffc7ec. 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/PLI365571140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26183ac08754de56509c989eaaa925a658fe72e888bd36119cc3a1b0158e97a4. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:39:24Z), 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/PLUM71100779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1bc225e5a39528c11e23de4315e6806d03294ba08aa4200f5d2dc12bf2d970. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:02:30Z), 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/PLUM71100781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d75bc44ef2781ea46905da4a3c251c45ac3e29e300e3e9524b1ec55f1bfaac. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:36:15Z), 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/PLUM71100788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a5811186d9838937f8a1695b200345204e00b3239b9a6a279c762a0516e66b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/PLF102300625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb446bf0fc0d62fd94602313547e64b0b0072f3fd84076209e0ab9ae8f93e6183. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:16:10Z), 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/PLF102300626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77a4f215df674a027e126ac709f2ba7a7a59ffca4fccf33febaf27d10f53efa. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:00:22Z), 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/PLF102300627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d23ef8833e18d8b114fb270457e388546153c8823fa8913a802f346f3270410. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLF102300630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27b48dca60771292ddc63b56efe10b2a0c6eff5f05a8ac3ac4afa3b0f75bada. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/PLF102300631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84820c8348aa73ba906db0587ecd98a13d21db97cf98ad8ad4d58c10a48864f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:58:46Z), 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/PLF102300632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40ea26b6783b2cd13e2ae8fd453eab6660e196cc9cdb185f33c558c17ac12d4. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:02:44Z), 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/PLF102300635.