1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x3e725c09fadd84df3a7e60cf6099979ef009790ad27fa17c55105165d40b2056. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/029a6393-ad95-4718-b397-75f6a37d68b4.json and https://artists.proofprofile.net/proofs/artist/029a6393-ad95-4718-b397-75f6a37d68b4.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 → block OTSBitcoinBlock must exist at that height 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 0xf4943359b113073ce8619eee10d1314fb1cd35f4d700c88c0b158aa672125e9d. 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/CH6541824644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3ccda2de221b6449cc7bf6412d7b13b2ad755f1295aac6f506b57f7a9af9aa. 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/CH6541824664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e93fc70342817c8e8546306be9c83edd95e3dd26c2dee7b2013b20f332065cc. 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/QZHN72223654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20972872f175102009e100aa7a4597162ed54866d5236f5a61c2fe4bbd1d6b63. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZHN72223656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa4c84f8325a62a5f642938a53ee47f61f98f3ed9d326aa4d62663ddb7da659. 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/QZHN72223659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d3241be6c60b3ddf8078bda743cf8b5bf41ae9a6ff7d790e57e0ac900e16c1. 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/QZHN72223661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d1c3f431042475f3a909677b127251376b83cc1a7878633765084b8bbac714. 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/QZHN72223666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6572fa47a13c753c88b5dd4c040f7945420e564b16cc2aac1f15ab6bb8feabab. 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/QZHN72223674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f796f0f6171fb3d089d62eb7cd92ebf18ee462ccf16b81ac45c0d754f09936. 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/QZES72067011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2a84e51a3658cea342935405b6eeed65374ce5e9d8025ee9002c0219bf4111. 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/QZES72067012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe7af99cef245bc7dbbf0a5ed77cf7a144e8eddebfd0b4d7f5527e7368f4c75. 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/QZES72067014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa622fc0356786b29b581495e0cdfe73fba3138bde80a73659c233216a81c65bd. 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/QZHNA2220896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fada9199d1c1ff6fd0e2d919df77c95fd2f52e2b508d3b1024aad4a04583df. 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/QZHNA2220898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a658648b143ae44a80fc33d154754439caeb228b783f64d260739e26679b0b. 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/QZHNA2220901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485a5b5f5e7e6b437bb441343e816e77704aea88c635aa07a59854974a6040cd. 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/QZHNA2220902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b0c1e79d328373fdca967748134e4a3b559d0cbe911f5f794d61484b48d24b. 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/QZHNA2220903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195f731ca2e6837dcf6f20e8ccc25c78d51c69ec746bed88a9cc46da24b798b8. 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/QZHNA2220905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccf618c74a6d898155680a5c34cbbcfa2f96fb6af22766adb060f6ff90b24f6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHNA2220906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc698def30ebccc4d0992f88ed05ef32860dbe96229494b289b0bf4a7ff501e41. 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/QZHNA2220907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1dfdc8828191184dc7312324a36b54c8e518fc874a15d78e4dddb3e53c31e1. 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/FRX282052509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301ef8c99543db1a509bc52066ff75a9c2292211cbafb9c9439c3373fe7cd07e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZHNA2232167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c2b43a772082a9bb321ef9d39da66e9e5334f6fdccbb0d531125f6467943b3. 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/QZHNA2232173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81b72d0b1cf30d292a1d958b2171af2807f4ab8fea9271f6dac168b5c3aefab. 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/QZHNA2232189.