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 0x2329309ec3996997911882c515487f5f3ba3cecdc99ff524d87609710fa4cd40. 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/82d0b19c-444f-470b-af8d-82ea78b90f67.json and https://artists.proofprofile.net/proofs/artist/82d0b19c-444f-470b-af8d-82ea78b90f67.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 0xd60e6ddc215922d77457f11c276ba7f1c332109980db3f98a2b76074fc3bc92d. 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/USA2P2304907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78edb9b2f8ae784b91393af8f91bb40290dc5caeb674918eb0e2189d08928ff5. 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/BK4DA2415966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc967ce7361ee6de8a417d22bc53f0cb052a73b401a81f5a655ff3461e0b8d8. 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/QMSAV1105084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf23d52fe61a6151f932e28b7fa4b76906fa69642ef51fb4d8641d6b140525b. 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/USA2P2318080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9498e3bb94109cdf4ef3e04eaf1f4dc44cbf89645035a8bc7a704379ed225122. 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/QZFYY2041246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8d01358fa70d54369109d1b604d7816e4e6e6b1568e96fce4228d8334551ed. 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/QZFYY2041247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb406a824abf593c5a825856bd85fd0334519d070942846c89d8274ecd686cf25. 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/BK4DA2429338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf853970588b8309b014553338ba779e5ce9e5e59bfe243a3a3858c04ceb486dd. 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/BK4DA2426144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60163a76050c6cc1b61973984f57df5b0d69affac40f6522221957ae9d1a2917. 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/USA2P2419907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfafb81aee32e8b3a5ceb14a0b880e4d2dbd6475f6b67963526926b5bbbf78c8. 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/USA2P2407247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aef584d2c36ad780b336bc78af6d0e97a547098fc850c0dc91dce8b91c4f381. 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/USA2P2357772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc699670c3611bad89d84385ed76cdf3d5174b3594b0f89b54a86b0ff26f1c433. 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/USA2P2349557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c90aa0b23053715b54ae74849d57c9db6aa9186ad1cb557dd585745dfc42f11. 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/USA2P2344917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5bb4dc2ffb2b45903239386c8c066ae85fd82ec81f16f21febbb0a6d3525b4. 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/USA2P2339143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0803afc32d47310011503de8a0028a3c381a9b65f2b1fe6e05a0d25e6beb90b3. 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/USA2P2335942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dfa8cd940050ca98d9fff36cd71e64b06a54082b24ab5ff0083b3218b6013a. 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/USA2P2325653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e55cb6e9870f25f9b7579340a18e616f9651dc13a330692832dfa7911b38f6. 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/USA2P2311910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d2c59093fe3fb11cb8437f72e7d4eb52b418bfa5410fddcb23dd8dde6210dd. 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/SE6XY2298222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77efdded438acbae7300f598d4bc7d803db4817849f84b968dc20a63f79f536a. 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/SE62M2229887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8c7eed950a1b1ec7e913a8659f5c892213461c3fee775f413e7f99327694ad. 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/SE6XX2278325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f1810bc369fc65891db50b893bc74735b74eb6c48f294f051d1a714fe84976. 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/QZK6F2286731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b381e770d6b85b3c91d37b0a47f10bd03ac70b88f22d1f3ff29cd883809cef. 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/QZHNA2264626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70efa883ef9fa2293eb65f8f611a5117f5f0115d0b7fac559d2b462273f600f. 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/QZFYZ2298912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6ea164ba81da7ceaad1fb48e10bcb2c2d2970fc0627863827b48358d491536. 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/QZRP42189597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee17f29a9402d416769beb28c59bd522120bf01dd486e6a3569d4844573ac225. 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/SE6A92172369.