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 0xad608f1e07cbc356df5b0b62a1c6b1d6b39e6aad7cc0aaca70993848ebcdf40c. 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/407bdc77-59ed-44ee-af00-373967b0e62d.json and https://artists.proofprofile.net/proofs/artist/407bdc77-59ed-44ee-af00-373967b0e62d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Priori: Music for the Back of Your Mind
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 0xfc22364e395bb185e8731779c91315eed0d9f00a17f4d192bdc6faa40b45a712. 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/USHM81745251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf214fb50230375af4728c6899a171888819904c20c092f54c67b8851434f70c7. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/USHM81745256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa758709b46af0655942a18801adb02071683b12fd55d0239463d41d3ed3345b8. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:29:34Z), 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/QM24S1841476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf895b1f6cb94e664c2105a94b29f27824ba3383cce655bab312c07f981cac68a. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QM24S1920773.
Snake Island (Official Soundtrack to the Novel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335c142f746039c6a3f36303fb1824e29df882c153c8a8ed330634c88afd8b2e. 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/SE5ZV2000505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bd191de8e289652638f314bb47b0ee63cc188f397b69baec0d8944f1f38036. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:50:25Z), 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/GBPS83861680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa0ca91026cd069b257e16689f950444f2f360116222bf7281b46fb18758f6b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:37:54Z), 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/GBPS83861681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41239196cbb2dab592c305a91c22de5fa2f6473e8eb37be3bc3a6156cac87769. 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/GBPS00000685.
Of The Hidden Sea (Inspired by 'The Outlaw Ocean' a book by Ian Urbina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb237ae52b2977d40796a182656a48cee5f9bf9b54b26fd628427e459780e7e. 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/NL4WT2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f08eb269f6e51000bc750c9e2975a7b9ff0298e320606328949598fd8dc67b. 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/GBWMY2151510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335c142f746039c6a3f36303fb1824e29df882c153c8a8ed330634c88afd8b2e. 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/SE5ZV2000505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee6b09d3e8bc2127bee89901667ff774dac17b3d2d2772ac20ccaf53f2840ba. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/UKW3Z2300805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecdc00d39d403c8ec79f834d2104b5a2dc56c3abc2c9c7a845e3f722a1f1ac9. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T16:00:19Z), 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/GBPS84983041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef86affe83757ea941e2fd60aa9a8e525e2bf82ff0adf3a69217c3ca72466123. 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/QM24S2306397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb30a45f7d1965a4a4ee030cffaf5f2d984db3417eae03eb8b22d959fc6fa6b1. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QMFME2375452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09395200d5aada83958f224c4b065b896d3ca36dc3f51539c90cfb1b628bdf9f. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:52:47Z), 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/QZAKB2472222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101ffabdbc2fbe633d3f0c636a2d69448f73e8259ffe58290becdf056ccd1531. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM24S1827202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2493ae703d3b05a4e79d19bd428023cba80601dab6c6cfe77bbbf8d951162c77. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM24S2008144.
For What It's Worth - Christopher Dicker Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6626724b4411bb8949b8ed9bfc4c13aa698964855b2ae96276fbcaaeba1a4170. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BEDV42000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adabebaf9a64d38e402365d25f3b342aac2c0c8ade31fa6c5ed276d87bc3373. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBWMY2050260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2f5dbd917cd1f8bf4ba6db0e2fe771f0dbef7996456f2abcee19550fafb53c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBWMY2050750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea1ec6e3f01108a38cf4fe7e28c8c7a17d9a9f4abcb1c14cff9b1761244084f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM24S1924039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaaabed8878df1db16281b9900ebdd8df7c5fd574092a98c38480f95ba08d1f4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM24S1912557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2775b931b75df788663b96badbe6891647c6d44599b8514116f4dc46a958457f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM24S2101764.