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 0xb9c1fa8a85ddf631de833d1c572a87046c900de610ca57ed2ff5ce2a34c64cc8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/014a3f51-2d0e-473d-9f0b-c91839b2d33d.json and https://artists.proofprofile.net/proofs/artist/014a3f51-2d0e-473d-9f0b-c91839b2d33d.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 0xae37bb00e1f17f03c9ab5393630b984d7d8f3d1d6bced4bd214c56c398492792. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CH6541830184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc12057336ee36d2875fe52372acfd60d3dc243927299866b54553113b3934ac. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FR9DZ1901097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1feedc8b74e4940fb598e6737c85660408c6ddf35b6532bec4e8e2f98779df72. 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/FR8FB2005400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1eaa45e0c647a85d701ecf4f48234eb4451580cdce31991824b2b111a1c763c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR9W12220533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390f957afd704e78b0e566ef9566b83f0ed38cbc43bf1a48425494a896023feb. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/FR9W12431746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9c2cfbc73c528ef49e0d257dc0b4cb20d271a01165697953398dbec9cbf0dc. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:58:52Z), 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/FR9W12501165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2bb15ec643732e12a8c1527aee9c74e8fe0c2c310c1df4a1f1bb8fa229a158. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:34:04Z), 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/FR9W12501167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2857c391c3c9f5beb8ab832edc5ce3c613db249d68c34258664341949648ab47. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR9W12501169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4efc0abc8c1947deec212a7cedeb9e38c09ee96160c9639d16a0bf816d3145. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR9W12501166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba066f803426bd451eed7a856eb40bdcedfd645abe2aa8b2279c257b1a69f71e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR9W12501163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dabcbaac88b449f6f339da5aa88fe0bb4ba5712f7697165e286e84a9d0dce4f. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:32:52Z), 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/FR9W12501160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e8542b7102562fcb5122fa3f90e73c5f2f3b32ec16efd9bab5f59e1fca9b28. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR9W12501162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701c74ac4a1cf5441e2604fc1a8de33059781d4a2fcdad2c01926fbf24294e5d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR9W12501170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5cf99f9ac507a894a3fe0a35a502ec7ef62aa73e2ba2f1ecddebdaf9025202. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR9W12515475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9217890cfdb7d40add21c4055a3d9d4291729872c333159139b22f742c2c350f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:48:25Z), 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/FR9W12515477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4659ccab3e48502555d6431a97e3d424fdd843a4d6309b4bad3bf995b4dcaae1. 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/FR8FB2209110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029f5d9f2667892956a13d7fbe68fc7376d6deee2f3c1d0e9a77f4c892a53011. 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/FRZ052200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466896871d45ec10d26ec65289b082dbb7cce3c2180e4e8bf5b81bf4b2c77f60. 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/FRZ052100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4659ccab3e48502555d6431a97e3d424fdd843a4d6309b4bad3bf995b4dcaae1. 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/FR8FB2209110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029f5d9f2667892956a13d7fbe68fc7376d6deee2f3c1d0e9a77f4c892a53011. 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/FRZ052200079.