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 0x0179fc02c17c308b067a8451b73185d2138647e6c366af39b549109d4e2e74a7. 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/06fbc86e-c014-43d6-b8a7-1659d5d7a9fd.json and https://artists.proofprofile.net/proofs/artist/06fbc86e-c014-43d6-b8a7-1659d5d7a9fd.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 0x2ec15942cf238a02a48baa09871e29926014088acda7979d51af04b2d53d1d70. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEYQ62023106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d61ea155e4de2da2bc0535e1cf6ac219f508b03ec392f0a0e7e32996d95128. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEYQ62023104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa79d46fafccd59abe6e35434d11d3d1aae6355267db9ba823146df82d9d6af9. 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/DEYQ62023101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa385f868d004e5ecaf76c4a936057a0dd4c81de5d21a727a09cfbafe48bd7782. 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/US38Y2427390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eacd231e3641177ef2ff1eb64be39bef112785ad2c066f3bbee29367f8baca3. 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/BE8LH2400134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde294453c57896ec1ff885211f5760b976fe167117dc4587c92f94f24432b015. 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/GX89G2462345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9870fb4fd1806a7f6f167af1f31d47454036e06419108c59a4bfe7b3400abf4a. 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/USA2P2325926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc362f39f1500aed37048cb8122a0036dab55c6d4ecee3f14c7d0bd667757b38f. 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/GX38U2351768.
THE LIGHT (Official Spring Break Island 2023 Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe5e80398e38597dc0cb55fe318f7cfc01c4ef99baea9c645f95940befbb201. 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/QZWDW2319748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6377cab538c7bd50ecada151203b15f0e2634f75f58c03cd52e9968bc3c5b9. 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/NLT2H2400279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1567d5c858811f474697eed41d1c6bdc54214b6279c782bc2dd13d131857f5. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/CH7812350175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580090045c7b074056086dec638edb67f496f2d7e663f4b9470b178d5bba2793. 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/DEYQ62000097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26093eb2de71f5861fe38663af32c801d60fa9f9d111ce0ad8d74a3c5edaba6. 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/DEYQ62000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1711981191228be706264f4911e080d2c660c2b866ee150d4018cafe9d66cc82. 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/DGA072160675.