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 0xd87f5d914ea2274ed8670cae2302263d12cf0478fb5936263f3d0acb8f3b3fc2. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d998d6da-ec61-4621-b00e-672bf0f238dc.json and https://artists.proofprofile.net/proofs/artist/d998d6da-ec61-4621-b00e-672bf0f238dc.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 0xe12594bfe58458202a235fe03be5838cf13cf4c37a03b42b1f9ff6c307b56ecf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITI022000433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722c543614248e2042eba26649c5e2b2c2579711c6756f6e5d1c8331a3451dc4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITI029800342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf705e5e4ab44c99325ac5b7b458b96b6de358aebac8382818412cafb4903ba3a. 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/ITI029800111.
Don't Let The Flies Eat Your Marilyn's Painting
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf425a650fa1ad22e910bdc05c63a8d0ce11b7ec6142e48f2f28aad0cf8f5c645. 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/ITI022300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d27c6ee09f55ee2bae6c23fcbf74b935c43f59d95ad646bc06c0779c428843. 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/ITI022100331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf663df6385988a7af741bd0a0a6a7ff6bfedbb7b07a10f9c5f03cdf0047ddb. 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/ITI022300462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3feb96eb9f2576a12f693ce6ceca70e3471b935a7e99e72dabf3866ed50b2358. 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/ITI022100332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e5dcc4a8849194984f4924bbf18592af498009d775c69a568ec2e6a18cbf3e. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/ITKM32300061.
Acid Jazz Summer Grooves: Pure Acid Jazz 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b7e1423225eb0551ee4aa84d6fd37755c81b3d627e354b830b3361ae82bee5. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ITKM32000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca514dee73061b195c573f8884af150f1d96b6ac0e187443226952379843664d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ITKM32000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6302259b5adc52d7c87756c8a57adbf4825c101732b83517c8725d6512e0c62d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/ITI022300634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4ae4500b4e583a2e0728f17696d0edee8b2235d61403f4dc024f39ff540a04. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITQ952200582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65233fd5c5b7ffe80210a1ccc8724346e5f1cc9cbb767d4c2151a795daeefc59. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ITKM32200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee9a6dec4efabbace0c68f44ccf81e0736eec7180bbb1b0815dbc18c1af8b38. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ITI022300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e5dcc4a8849194984f4924bbf18592af498009d775c69a568ec2e6a18cbf3e. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ITKM32300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb0a7f7de5f020e34ee10ec137fce9a66033e79a6c5113d5935af942e671989. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ITQ952200581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4ae4500b4e583a2e0728f17696d0edee8b2235d61403f4dc024f39ff540a04. 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/ITQ952200582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab0f602e14c25e65941da29ef47ade4ec007dd43f939581eba9aaa41b47de48. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/ITQ952200586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f474db7b808f598ef99c74a65b6bc9000c74b241c7e5bc8964cb5c92d3bf85. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ITQ952200587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab05414203cc317c21d3c0ccb1598575c9aa87e5b25ef2c16ac962cfcd07fad. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITQ952200588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d316008c025581c19f9fc9a0d31e5ed7a479b2db02de7e289b524e1e3c1161. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITQ952200589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0b28c8151a3e09c3559a50dac5f0902cc4aa9411ccfdb783d951c675f59b8f. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/ITQ952200584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21577e495bdf3dc6e0ce3203991c0942828615ad0c37ea59813e67cd1f38e55. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ITKM32000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b68b28701bccc63fb3f983861e5997e64f361b40e96a51bda1f176de974256e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITKM32300060.
R&B Soul Summer Vibes (Afro-American Rhythms)