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 0xdc16bf4cf12d65bf7b65d413a6f0b0b422c94b21cb23c4b571e483482bc5c585. 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/91cd149f-cdaa-462a-aa51-2015e9185a1b.json and https://artists.proofprofile.net/proofs/artist/91cd149f-cdaa-462a-aa51-2015e9185a1b.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 0xd52ce5c773fbcf6039ffa5efda43f764f69186d5497cc9345db869a1bd19f542. 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/QZES62439642.
BUDDA DZIECIAK 98' (OFFICIAL SOUND TRACK)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3328066ae12159e729050fd2a16245e23519244358c15b7968448705bfc25135. 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/USY242411555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16b103cce6346b17615edc60cb082947b69af4d14e1f64f4e9436fc28b3bd8c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USY242411558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610e5a5868e649de42380049a4e29e0e9d7f79d5e1ec0814210780e8d8ed25b9. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/USY242411565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047285b5cc40265d71110f7322fb5c46f302e27ca3b2735a7c8515beb8971d85. 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/USY242411569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8745922cd17a4e0f9d7b48877d381349f9c7374237660d97296c84465faa7a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USY242411570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c201ca42fcf39db83d41c0455267d6c4e1181b553cfda1b92e991737f4cf696. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USY242411574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ebb81c2ca7c5a6ee6b73a60d177f95cbbc61ace3ef11dea296792db20e16f4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USY242411575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd55f6e6c84ed50d8adea26d50847d84ef73a1c506c9944e6e6c730febbba9ff. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USY242411580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3142f9498d2a5e7c0336a97b3f339a55ab2e201bcf572e3e39b0a02eae225e. 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/PL86X2500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afe2e05ea32d44062aa9ab32c016ea7123c213e47a4d93d14938814d96f9c87. 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/PL86X2500091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd403f6e0e534004fbd43acc443ea3d18e1973db9150f028d715db9ceafc24920. 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/AEA2L2158855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da3f0a7da534c1844670e534c92971bd92fc478813efd854531e89ce1da5217. 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/AEA2L2158856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9611d5f5b1920059f7baddd3cc52a247bfc3153fbabf2fc09e6c16f89d375ad8. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/PL86X2500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56048e3b38f05dbe30e884852ba70cb737f4e6796ae791ff5e3b636ac3a14f04. 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/PL86X2500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef303e4fac16055b05047365969bbc6791c160483d810c6d6e8a207a8316e19. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/PL86X2500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9204ef9f5f96998d487a92c965a0968d0c40a3d956e77f6df5c8c3aff78792c6. 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/PL86X2500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a12b2f0a62f805e861b7bbf7bf285906cadc91c489046d3f9c4c17f68268189. 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/PL86X2500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc221929dd07c44a24d2dee821d16e30f537d3c39203acd4c7eda41e336fc97dd. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/PL86X2500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07ff67be1c1a9e1e88b05716035e9339f888d11cc10f8549ffe4416705bab44. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/PL86X2500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf908992f4cb2514e21d31381d244f8ae7602cf30d13751a89291860ccd9d5e. 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/PL86X2500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6072d01c84d124ebce682894146ecf0a80ed812dc4aefc8482e074f2acf0b4f2. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/PL86X2500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc329adcedcbc7654fc897e07dd00bec969f24ac4f52f5fadcab1b0983ffb86e8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/PL86X2500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bbe9137b7cf67705d6615a88160a5c3a05f6f12bda94b3b15b20ac5f105208. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/PL86X2500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66418b2d8d7df4ecf85fa1a01c8129285c44512405f7810990c25b88b11411e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DEAR42544618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693428d46ccf577dcc453c42c8e87084f7f3166a8edf7e1ac7a93e874be5206e. 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/PL86X2500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd990927d4a00e18d59a7601a554c82275c1b5e99e3b33ddeae140e08e419b261. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/PL86X2500054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494e3bc4a3c1813242d9380dc519fa7ddc524d92479604746f332033e75a6a6a. 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/PL86X2500056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2824ed6f20b56152a97152339b1157d12ea330974cd7bcd3ecea7d011d87a2e8. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/PL86X2500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056f4d270306cd2757fc9111ff4ace7a790e4d85f1dca7d633da24c92bc582dc. 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/PL86X2500010.