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 0x2ba5843427bb87ea7e1b0aed85a0c3bea65e9d473f0dca3ac0e7b2cb05ac1d49. 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/0e13dfa0-7f3a-481d-a9c2-09f51b4f44dd.json and https://artists.proofprofile.net/proofs/artist/0e13dfa0-7f3a-481d-a9c2-09f51b4f44dd.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 0xfd6f1b56f1a48ad7393f2a0a7860605839ededdf89bb233f86e357231ab1f3fc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US83Z2344569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca90caed73786aa3c526dbd95a6bb02348cb7352f2fef07f8c6abbc6f7dbebf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US83Z2497621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50eec0ebfbc3609c5969cac6da1750b5c00086e91180473f3adc6985f0b4de3e. 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/GBKQU2327728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe994790c1a512b64eb1e2aed926567949a50a55cd214c289c4ae358706497fe9. 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/GBKQU2327729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f453446040f72c227a1017525a45a153510f580d6c0d53eac5b6cdfe32a267. 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/GBKQU2327723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd1065997a454ecb06a18d85b415f5aef4b8cd195e7006728cca611ac77456c. 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/GBKQU2327724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a5c4274b14ca64103c50c54ee5b232840e0efd260cf49ba664b4077e17dd2a. 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/GBKQU2327725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48b205bb7e636589daa676ac71eb9cb62e17e7cb4f00386b3783319f5f789fb. 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/GBKQU2327726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1f49a58e30123680d8a9f94d993e5d36290afb540d7d7a335eda2d40dd139f. 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/US83Z2428226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf22d2d403ec79eb694849c3375797d766c671601228f30662f53b49b0722f6d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2400716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911a8787e9326be5ab13d47b81a981aa0f52527321273685bff479413b2479a3. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/US83Z2400717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3027edbf4adc480967200b2a1a7c8aed99105788e1bac32ffe4868e9e136fc02. 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/US83Z2481505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87ff899edc2b975044b72653702345bf257a84663422b27d3bc4c0244f3a8ca. 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/GBLV62319296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d39df3f5dffcd38f6df339fe612156dba8c3bf2a819c16e77f4a0d51636474. 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/GBLV62319298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee5250142637d6cd7dc7ecfbb071f2edaaf4f9a67954e86ff7832d37e7ca541. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2347642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e565632ac9a87bcb7e877e55a775adde86f263c49279d3333cb3de8bb2b7bb3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2337350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028a407924e1f70eeae3620c64ec1b320d2ced229fa715978b46e24c80853e25. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2337346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5c56a23f7578a1af0f336de3b738fefd774cb5a594100e9ee1f3c9a4f440b2. 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/US83Z2215441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f2cb33f64d26b9a4e475c0876a0b27952d10b5e625a8ba0771bb3f62ad328f. 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/GBKQU2337347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9396fd409009c2fbe62442a2c484f45440bb0e3e16d13ddb7dbd166421686029. 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/GBKQU2337348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f0da9a4637411fca570d22f6f6698c5332e424dce66b16b05d312bf5ef8ae3. 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/GBKQU2337349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e565632ac9a87bcb7e877e55a775adde86f263c49279d3333cb3de8bb2b7bb3. 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/GBKQU2337350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a23bb529f47fafd379e4b73907292668d2291466545fbc25c69a0d18dcb9fd. 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/GBKQU2337343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028a407924e1f70eeae3620c64ec1b320d2ced229fa715978b46e24c80853e25. 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/GBKQU2337346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616cdad1f85e9e88075b02666479645a4ba719bfc9e754e4773f81f6006349f6. 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/US83Z2417516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fda28bb6dbf222b9b03a349eadd052cf2de0d9a66fa1df338c72d585317468b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2425264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7b88eda83b46c29c2219f4e58cbed4bc43e870ef98ccc5cb51736b63c8298e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2425265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbd02873021f97c3232ea6f6e051578f009980839eec0b8e9c19d31e58b8068. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2425266.