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 0x540c9ca2a392f734388a304a8d6bac8992dcffcd18b1cd6c5eab539cb8f8c3e3. 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/30b4235e-3d6a-47df-bb22-6dffe90271a0.json and https://artists.proofprofile.net/proofs/artist/30b4235e-3d6a-47df-bb22-6dffe90271a0.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 0xc58b90daf5b97f23da7760f2d8886fb810a684e424b149cadb5c1009bf3f13dd. 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/GBWUL2073371.
I Fall in Love Too Easily (with The Elovaters) [Reggae Remix]
KBong & Johnny Cosmic (Live at Sugarshack Sessions, Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96d9d77e8a1a72a0ed7a4a391aaec4394d34f2bb380b2593d9f81f99f6e8561. 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/QZTRX2218419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27a9bbe96d236133d2946a6bfbf7094951ea9346ea6ddb3a64a0e82ae2ed76a. 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/QZTRX2407734.
Life's Better With Sunshine (with G. Love)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3139b91a6211230f25223ad57f083e15ab084137088b10601349288afe4af3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBRKQ2460714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3139b91a6211230f25223ad57f083e15ab084137088b10601349288afe4af3. 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/GBRKQ2460714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb91ad10931cd9bb0ac61ca8b32cd5f32a297b12a75360530944fb86b9a1030. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTV32362215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb91ad10931cd9bb0ac61ca8b32cd5f32a297b12a75360530944fb86b9a1030. 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/QZTV32362215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58b90daf5b97f23da7760f2d8886fb810a684e424b149cadb5c1009bf3f13dd. 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/GBWUL2073371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fb3602979f82a822957fc4affc52d8b086c4696a6a30a4e839bedd949f6ee1. 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/QZ5FN2204858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099c745b3251b21902cbc346cfd05dc9b835b795ec9d4f6a885804052ba8dc46. 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/USLZJ2174817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58b90daf5b97f23da7760f2d8886fb810a684e424b149cadb5c1009bf3f13dd. 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/GBWUL2073371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099c745b3251b21902cbc346cfd05dc9b835b795ec9d4f6a885804052ba8dc46. 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/USLZJ2174817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43702548dc745fd6e9481f0bc455cbbaa0f6a9801834280901c3dd5e50ec82c0. 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/USLZJ1909291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96d9d77e8a1a72a0ed7a4a391aaec4394d34f2bb380b2593d9f81f99f6e8561. 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/QZTRX2218419.
Bittersweet Symphony (with Johnny Cosmic & Man of the Forests)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c746c9e489cd82098bb4be7c853e2d4eabdcb17173a878174a4fc1979ff08fb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLZJ2017797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875368427d43868b0dcd7ffb84ca6c019a05c98e41e7bcfa6243322e3b2841a8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBRKQ2271631.
The House That Bradley Built (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b981f02d5d84463df185c7681babbf8179e53278e6b2e190466338c91edee4. 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/QM6MZ2089774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf211f9c3dd6053323c0e3528b93909a92f69f9fe3d849f549662f5fedcd43c8. 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/GBWUL2248048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87683d867a726df570422f9b135da21d84a64d847811c371f7c4e5ed14cf5f96. 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/GBWUL2248064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2533fcc09f322f4775812c78a15db994f58160267f314f6cc0860bb082451d3e. 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/TCADK1718639.