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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963fcde09bd7c05cea9424fc6dc16057348c47513c743ace2ac517456b90b62b. 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/ca343289-41ed-4313-b491-3bb5944d8811.json and https://artists.proofprofile.net/proofs/artist/ca343289-41ed-4313-b491-3bb5944d8811.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cddcde5c43110e0030a650bb997c7979ef3c84465fd4f28110b2cb01bc6c16. 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/SKA011200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ce2720f2a2f1a8381886716d96b640bb0d0144ed4a72d8e75a824e2cb91214. 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/SKA011200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bedd9d39f63db8f83119a1db62efcd7423725d12b5cd199171f297742fb6e1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/SKA011700067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423a2fa8f79509c160c4507f805145b3373c5b822369887b047ee06f9486d5a2. 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/SKA011800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd2edd3fc0ebc07ea4cd470a3f844b431cefdf827e46a5540e3a3a817e5d361. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SKA011900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fd4aac288d696aea084dcba29c20b9e3ea8c41c5b7fc7d0b77a3b19b002a18. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/SKA011900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a457b44e4ac0a2f5bd5d024e705b6ec2c1a3f55a821d7ee4270dc179da0e74. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/SKA011900109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634e95f50d4e232676d716689ac3f2f6a3f380c0089e9cd2c4ab5eb9e24ebdb5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SKA011900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfed03ab086adeb121530790829ce7e6c88cd2d4b9495e05e61410bb9da08066. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/SKA012000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08713e353ca5d5e250dbaacb22dbfea584a55c1f3a7c2e36e0ad5f030489e958. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/SKA012100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab0b3c74d187c3f1905d516a74eb8d74b3e83b192fc29c0cec0a70c1256466c. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/SKA012100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd706c0b083e1d8a80aeaf68d9c01fe94d6edf11de6e009eaf2617047e522b7c4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SKA012100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d5bb471476363c3ba04957029d109865da027e86fb618d95dc3d38f6d421f7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SKA012100209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f81c34f3781adedd98fafc5eee94a6c0a9f47d78f362914bd5735ff1feb91b. 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/SKA012100214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddf283a917efa65f2978679b69b9a359f58f2afe992d388a989c251490f3ccd. 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/SKA012200331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf197fe010b30d91f86aeaab3632fd530df99ae206729d6e5376527e7b9dbeea. 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/SKA012300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf197fe010b30d91f86aeaab3632fd530df99ae206729d6e5376527e7b9dbeea. 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/SKA012300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ecedd641f843086a2ea7039831bd093a07b69ba96543e2ac28c27fe7f9b8d7. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/SKCM72410111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4b16482509ec635f6daa213f30cae6a93696ce5799ee3c1d72be0f82af425e. 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/SKCM72410301.
Hornád (naživo - Len sa smej turné 2024)
Hornád - naživo - Len sa smej turné 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b2c269e475b4401abe28fd67947647bbc0bab5bc25574dad9f0a665fc8db7e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SKCM72510001.
Stromy - naživo - Len sa smej turné 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94706d159f347d311cb72d349b026bb13dd5b7463eedfa1572429857b1a6a913. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/SKCM72510002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf197fe010b30d91f86aeaab3632fd530df99ae206729d6e5376527e7b9dbeea. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/SKA012300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3af7cfa9be70bea28d5eb9924c3e4800262d151f224ba2f8067f850977b16fb. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SKCM72410302.