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 0x0e94a40fde087be36062a8ed5f965a689ed0efb5fa298da9519846f0fc349b6f. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c513ff34-17c1-4a5e-8f30-6d549f32d44e.json and https://artists.proofprofile.net/proofs/artist/c513ff34-17c1-4a5e-8f30-6d549f32d44e.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 0x3ecf256944062d80dc0bf76ad35e7456d3a5797b5842899bd3058d4104dcd507. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRRGE2102533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80abf5e8e2959c7fdf9268a09eb335e7ba145de3669bec6c123a1338211a122. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BRRGE2102523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fbab0a0d04dc5a25fc05c2bfbad2c966f401a416d631d88bbac7e2c664efe0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BRRGE2010646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd3e899a2dfce477ea480bf567d835bff95cc3c383f6636ac7da8486cb73d87. 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/BRRGE2102525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fbab0a0d04dc5a25fc05c2bfbad2c966f401a416d631d88bbac7e2c664efe0. 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/BRRGE2010646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8005a5ee4cda905dec64d7035cc4d8b1a26b4d0c6769a74f6977fbff1856f01. 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/BRRGE2010980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ccacd7a19d6f56801f22351d57935ae3fa99a2c74179dba1a7b26f4b8b5711. 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/BRRGE2010982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035eb0291a760729d99e4ae8ed1e6da12ee201e4d271dd707761bbe751d771b9. 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/BRRGE2010988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20eab899589f879ea59c66b25829f100a449ffadc7adb37f2a26ad8b360118f. 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/BRRGE2010990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b694d01236d18046a2e856c73a303fc9fb7b2314b693addc73128188c734880. 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/BRRGE2010992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3437e5ed65f0d9fbaa6fc5babcb45dd99f77d60d3bea800ce10b5b8b264f67. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:52:02Z), 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/BRRGE2102521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80abf5e8e2959c7fdf9268a09eb335e7ba145de3669bec6c123a1338211a122. 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/BRRGE2102523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd3e899a2dfce477ea480bf567d835bff95cc3c383f6636ac7da8486cb73d87. 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/BRRGE2102525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bdad760360681234f2ec4d09dbe45b1eb28ce9b1341a58d46e6274ccda1d82. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BRRGE2102529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e99d46bfd4956ffab9e8a2dce4055a4e2e582092a8c4a97796c10ec683c7ff. 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/BRRGE2102531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c6c3f5622546fede14c3509dc35064c9c7a5d7bea0ee9f16de4d011dc33bb3. 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/BRRGE2102495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecf256944062d80dc0bf76ad35e7456d3a5797b5842899bd3058d4104dcd507. 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/BRRGE2102533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fea46ed126076a5ee53ca2571483fb3bab9770fac0175b4252cd464254c79bf. 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/BRRGE2102535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8005a5ee4cda905dec64d7035cc4d8b1a26b4d0c6769a74f6977fbff1856f01. 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/BRRGE2010980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fea46ed126076a5ee53ca2571483fb3bab9770fac0175b4252cd464254c79bf. 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/BRRGE2102535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600892aeb9b9e805d18e87d97859f09759ed43688aee746a26d7057fdf5f1392. 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/THW092002161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c792b9765930f5ebcf329f492bdad12b5baa9e38e57bb8dc55958684ac715a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/THBLQ2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fa7dc19b90a749b709d3d3b56f509c7cdefd96c1373188aa5713031e1e3d3c. 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/THBLQ2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8fa6505611126000fbab26f9e023838d05557267eca5e273c2a1d2b5ef5bf0. 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/THW092102284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfab13a48754bd52703cc4909a1150e4c8e3b2a2579208df4381d363d68b054. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR59R2274139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270e7d36c0f12af0492596066278ab8c498948b0f212623a3298ab4ff914fda7. 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/DGA082311240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf146e784c750dc6f43c9a5924e56a467e8a46935c5a281b95bc3e25fbe70ec21. 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/THBLQ2400501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ea134a5838494a0771697a2be6f7b78d77ab75e439654726284becfa989d88. 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/THBLQ2400601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03394e2e52bba15d3de0d4fa4269e45f55f978d15cd5b922f5f60ae012ec85d3. 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/THW092104717.