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 0x7468de67aad67591d604bc40b2a08cf5843400dadf38b774e844f2c6aea07e30. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2908b818-9654-47f0-8d07-fd8a9fb3a72a.json and https://artists.proofprofile.net/proofs/artist/2908b818-9654-47f0-8d07-fd8a9fb3a72a.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 0x4b9ccaa80c7adcd4369a2cb6aab403dc5ce721ced658e26d223f2df235ee4626. 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/TCAGB2211223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5f6eb27f8ba156d7b5490c4a5f4f4169cd9b369482349c4e399492fc82d23e. 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/TCAGB2211256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b20c6066fe1b9ec83eb653fb481bd90cb2911aeb1fa60f53b5467fd448f918b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAGB2211351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e6670f9c0c87bf40c9ec6d33a99d4e8448d299dd8250d2dd964300471769ef. 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/TCAGB2211484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836f58822f3ab99d8f05a0b85ec1345d478721af900ae683f94fa6b0fbebedb2. 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/TCAGB2211515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf10c654b469a0269b047f1c80be47656fb77ef461da611b5eec1f8c6b7e8674. 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/TCAGB2211630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66555d0d9387f2eca4eea9d36de1d725d6beeaa8cc3ead9b750df5a6687706c7. 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/TCAHX2431266.
Oba Ni Jesu / You Are Good Medley (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72ddf490d5e3b7921e17cfa1151edfde2bf1abc17aeacc1c25b64459e202b5f. 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/TCAHX2431314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c94b3c5db9137894febbb865031394d6dd1899c0bb83414df4aa0d1b614382b. 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/TCAHX2431290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1f600d1985cebf0d7cbd71729c2d075c47bb2ba73bb29051a99717f00a977a. 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/TCAHX2431204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fd27089826666945074da9f3a4ad5c1fac3443ec7b7741974b98deb27c1769. 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/TCAHX2430192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf548f7ecf32db08db0b227764c7d0fd37d072edb0853a4db82c1551a69f6544a. 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/TCAHX2431232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1efe07664e633c0f343db7a7270542a03f7c87d26540af355974cf757900c1d. 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/TCAHX2431301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7647a6a2207f144d3a9d6b68b18099a66736e00e625eeedd733009cffbe5207e. 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/TCAHX2431219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104da9201822884e765d79382563c21846f2db0557e8b8cfd54bfc01330836d6. 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/TCAHX2431244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2de30419bdafb5dd9c9945e73a447402fd68da6ad0b908673a8b2b5c7b9b21. 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/TCAHT2309668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f58044aba479b0862a8a6b9d1a4d045a024a4a3fa16c1bf9f9b4c8f8879da81. 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/TCAHW2495597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce44f615ca231d6cbd086b6b559164e6ac1dfdd30cf6a310be49f0a7848ed2e0. 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/TCAHW2495615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b70f2f8c920e5cb687de54264c023e3d5c5bbec67751d075e82ee7566b7bc8b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCAHW2495734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a317060aaf7b948766700ede33b209ec191c633a3c544f152931842cc7cbf95. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/TCAHW2495666.
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