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 0x7e734e16eed85452e07d28f423c42b485704eabd2e0042bb997280ad49c50a3c. 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/80f24a29-1805-4dcd-909b-a392ed5eae8f.json and https://artists.proofprofile.net/proofs/artist/80f24a29-1805-4dcd-909b-a392ed5eae8f.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 0x094e9ea49f3ca67e5bf0501ca15b2f95c0eb18be06d679efe4c56eecc5846f01. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYY1902456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb789a3d153491199a8f697175399f62ecee29860672494474598483c06a6e865. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYY1902458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909f31dd5e6e628b755d861099072aafd5458a2f8ef759c08dd2261735a30b0e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZFYY1902459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6a9eca2cd3ebb6e026f09b2d4b41d80c4fcaa95fe482b8dae7ff01b4913a57. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR59R2050397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658a45e70137bab4fd17bb3e03a3ebd556555e51ca3340dfedbbd018df534834. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR2X42235555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a8bbe82319ac47e9db42b3fcddbab017a16fd39dcae741360bd31bdc636904. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DGA052259715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1ed5695ee28438b8c579bcc91c1684da672dbe5b095561ced8f6e93c0ac52c. 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/DGA052259716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658a45e70137bab4fd17bb3e03a3ebd556555e51ca3340dfedbbd018df534834. 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/FR2X42235555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239d41780a35ef1185c3fc3e2940720e055b151c0fccecc0377d9b0aa1ea6bf8. 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/DGA052259717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f90d06df03dc95fe270189329e268da22b78f11fbbd9df66b8aab8716199e63. 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/FRX452111722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920cc40708330db0ee9083e14b9ddf6f4ee7bbc2e202adaa1cea9322a8bf7466. 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/FRX762022954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d2448aad689adf06ce6b8987752a20cafba20420c8aea1f19b7cab59a794d4. 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/DGA052259722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44ef7f5197b77393bebce24976549776720e9d2796a31f168ce9ce6c12780c4. 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/DGA052259723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6698666e2b071bd628dc227dac3b3e904e3af65d986fc92caa15e5431d803c44. 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/FRX872004219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed344a2afd95207c3f866348537edfa40f7a9c41a8304a2449fc686eb8d31475. 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/DGA052259727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b406a45965139871f4557c82773f30cdb8e85028e6e8c566e6b52fa019663b2. 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/DGA092326089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4febb51689a2437598f770159cf3b10c7c015a231b4a3e7fc86a9e205f12b56e. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DGA052519192.