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 0x0ab312451de8a319a819a78c8e96a153eb85c35eb3efb5018c731e44b06374bd. 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/a7fba24a-6adc-4619-a430-77f782639208.json and https://artists.proofprofile.net/proofs/artist/a7fba24a-6adc-4619-a430-77f782639208.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 0x1d486c95faf189a0b88d49a23637bb317d7f24c1f5067c81fa8cd1ea447092af. 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/QZABD1907999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc520eac3fcd1a8c792376f3a2aa0dbd83010d048dd37be0ed3250ec8b76de8a6. 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/QZABD1908009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5cb8b5d9a3f9e7a089ffcc96ccf98eb6e3c1f031cbddeef0a86fabf7dd7c6e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZABD1908034.
Immensity of Hope (Epic Stories of Promise and Aspiration)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de443fb563f4cf6d0b3cb3d1b8cf0acd55560bc05f1eef85a390ce840cd575a. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QZABD2000554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91947530ffa70b42132def300c94515761fe57148a2f5afda83d8b36baf617a. 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/QZABD2005964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec697d27a9c2ba7099557ae66f37c6dff96aeb39aaef89c409133bafaf5244ea. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZABD2000523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d986c3be4c681f510aaf15ec709d14499aed4337ebdef35480b69d19e56212. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/QZABD2010082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a786f1013765e9e68c83e01dd5eb47db0170df4e0c97cc9c6f0f7c6ff7c43d. 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/QZABD2010094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21c92eeb17b6bd6be3f48bfc6ac6b55c34060103b0164c6f9dedfd0712da888. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QZABD2010119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cabb841c9ab27b9d56a4ee3594e8d89f1126388d3a556b5e8a2d96fa5db7813. 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/QZABD2010132.
Tales of the Heart (Piano and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3ebd98012d3c364ba8848309019c1e0d6a15c4ddb3c7d1acb4ca9e9799db0e. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QZABD1910353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bcd8718486cb5c1db712179a0469522dcd0410ff68916cc937b3aa13de0de7. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZABD1910310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5b1a0d8c73a4c981f29dee866aa04aab73cf86c67bc60d33fc72e7fc7139a9. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZABD1910321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cc965ce325ba69fd2772e92bcd47cc3bc52b2d14d2867abd446d29c5c9f9b8. 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/QZABD2101477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8715f99983d965fbde9224fba3d4602f6176efd3b7ed41b8fcc28ff14d6a41d. 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/QZABD2101488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ce680fa0c07215e0eba4a440c716a2f376a20778013b62e6416ced00b1f5a0. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZABD2101509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe078568009678b4d812308a665694ea5a426eb8d598ea5b1cf060c193733c521. 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/QZABD2302083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327a4ce7fb5b6ce33f722b8f1c5be97fe109f0cc9779d810e9833d00973fb13b. 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/QZABD2302134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009380c0342f5936562e2fe7dd9b21adc46481e0301d0dbc7f75dc8929be639b. 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/QZABD2302150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e9874ade9508d1897a5d2379405d32dabd0358d26cc994d947771cb875499d. 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/QZABD2302167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75bbcfc1f2113b7fa28c17b56a14acf977f428a729573882a36f8d9b2b37942. 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/QZABD2302182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7458c781b2a01ce23fbcf84968289a168b6316c16cd1db6a7a67d72fba06f75e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZABD2306781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57295e8c6ab0438b30f50f4baf955eff6825c72e7f63b4402bba0e1e489e32a. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZABD2306764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b660c368b516d4604bc9ef489151783c08beeca9232a7e56db4ee5190a75b60. 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/QZABD2306797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301259baefab6daa35d7eeddd6b84cd3d3af95f9dadbd762886f5989be70deb0. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QZABD2306815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcaf6e925ce5c22b2e0ac2b4fce6f7e1c89321783e78831355a53412bf5297c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZABD2306832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71b57544de1a613b9c78bffd3f2e02f09c556bc756c5de98cbf5ecacbede5ae. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZABD2306849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6615b784a3cbc240a94be0bdca49a3d0adeccb3e790b7d9642bc00bf1205d14c. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZABD2306868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119f81798e8ffebaf47faf2b6810b85c6027fff5082faaefad88aafa47929aee. 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/QZABD2306902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa933f9ff85601eb99fea4b6809f624cd61ba6285d9a13a065fd2cf2704295884. 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/QZABD2306938.