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 0x39e9e5e21a7c6bd6e5947258ea2f3cc112a4014310bdcae9c9fecd743d368584. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c7c5272-5011-444d-8451-68e30a6a6fa5.json and https://artists.proofprofile.net/proofs/artist/4c7c5272-5011-444d-8451-68e30a6a6fa5.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 0x9433b6a4dabecd32b81c14ea72195c8585facd916cd9a8e330270904910c6332. 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/TWCC32201210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa76999b61a72b8eb88af5492119932a2c6bd37a392352995ef5ea6c61c3237e. 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/TWCC32206178.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7028531e1b80a4d0611fa40bf0b0b177580d9210ee289a2527e111adaa082ac3. 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/TWCC32205648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d3ab226b0499e2bd023a270c97a4420c65825f3a6d6d6c372e2944fa41e6f7. 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/TWCC32212208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a7574e7ea2daeff7e75c003a444c6ef051f744c5daa54eaee67de60cbb633a. 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/TWCC32122935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6a9cefbfd15b4971d074858551ead26a4bf5ff17ab2c0026021bf11328c4c5. 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/TWCC32108814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf498ef31796bdacb4f29bd980f17948be0337da4a33d1001a4957114d9eb43. 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/TWCC32101751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a3afcad3137bd33b8f59e2a3fb2f73b94b322fdb4c784d9ccdc1488faad076. 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/TWCC32101753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b0c9fdc0ce0a5b1ac841f11dff0b3b251e3710384b3c045ecb2222c0414c71. 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/TWCC32101754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704ea0b6a3790e85a5e1f1623f62398d22a8d9e58b456148d3f20f4cbeab6bf0. 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/TWCC32008665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24289c712efd85434c3c5f14fe9976c9a30aa31347ad31a0ab2b208be18ea595. 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/TWCC32008669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09432685b93fa4504daa618361c01a86c662e052f2cfa30cd7661b31f1aad2cd. 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/TWCC32413156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a6444f07e79da45a58119fd0424b26eb6b9ae9720f049e50becff2a5fd6c1c. 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/TWCC32413155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59316216856fcad24a5aac009d9a5439e6f9b64b08ddbfb6742dadea960a7fe. 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/TWCC32400793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca42f6e1e1d7ba4830c7405d531c80e9b9a86b130b538667a7894572536c6ff. 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/TWCC32400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0374d86c14e3956b7510725c36e769d4ce9a9ec3136b9fa80642edbf8e2119. 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/TWCC32318402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb237835f4961aa77d8baaf5497843ab6ca5078998cfb71b6897216863cc27341. 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/TWCC32309404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb454af810580f73d8e86cb17f63a5570b78a8123a8c75b7a18e524d18fd3414c. 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/TWCC32303409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f82e3c4d292d0fd7b6edd3dd483d7737ea66b629dbdcae9dd69fee2e5b252c. 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/TWCC32300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953afc10017b214b8ee972e26aa92a96ce7bd7b2e47b24b76171d769d5ff9ab5. 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/TWCC32201750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3f14ebe5f558a4413e84233de7aed1ef67b563d1524f80726b75067b520417. 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/TWCC32201752.