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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99561843c6777b0956230044a2bab2e6f4bb1beccf0c0b6db83e372681a9e50. 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/f19633f9-d69d-45e3-838f-1e75b4b8f165.json and https://artists.proofprofile.net/proofs/artist/f19633f9-d69d-45e3-838f-1e75b4b8f165.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd17fda41c51be2c77c3856efc7e098badae793e2e186e1e4606c37c879cb10f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLS282100086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28a3cf7592c8bcbc48eb1cffd47d88b6798bb74052db3dec3c453fbeada7f4b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLS282100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb397e64ab0609f8c45077a530eb816476ea6c0c73b5a9bee78cc3942b108f9. 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/PLS282100088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5d597d391a859d7d5ad9686467d3c91ca154de8fba19571d43bc65425a1158. 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/PLS282100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5025ae9e29e2c994338b6223efbabe47bac67eca9e80f9871fcb2806205839e2. 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/PLS282100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888946358e9a03f558085299f2ddaf6ca2d96df5e11ff37e3e3776c560a16889. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLS282100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fc4838c5118d1d80f2c8ef6618f0a88bc2877a4d64b3a96ff092966c8f41e7. 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/PLS282100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c20d96f53e1632a5c0fff0f607f37a843fb70465f2a111dbcfaaeaab820c0b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLS282100092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeab8a953d96a489a4952cf5f162d7330427f8de7eb0c4e3c8a7de55ec5ae8b5. 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/PLS282100093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e0881b8e4712c55ee3590b3572e2fa72719f73dd9dcdee45584d77bc6b836f. 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/PLS282100094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0aa722369bdcacdc7084c801c8b3b404f23489df227163bcb2222c394955c53. 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/PLS282100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7210a1f3b5e6bfd274f67c8f702064e1c7693b37b95225afb3822cc8de7e5efd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLS282100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa817dab1654a02cd8bc0de2e8cbbcdd4907de47060b291c77be64a0bcee2bb97. 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/PLS282100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcf7b97db3532c5abf90b06fb322560cc6de0dc149d134266935caf073699f0. 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/PLS282100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d07cb135a89432838ab5b190c7d376964c51f398b46cd303b766f06e103a3d5. 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/PLS282100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc74a84d45cba05bfc9b129a3436d2867bc86316564c790404a23b5ba5a3dde. 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/PLS282100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229051955d69aaa98ef29fb74f7cc8a18a3712b87d3ff9c829d9120458cebeea. 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/PLS282100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43986bf6e570ccfa24864fd781f4b2e170b5c09010033850e21071115ab3d67. 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/PLS282100101.