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 0x07d88ef2fb345212b056279e9c87261063662497f762ccff98eb374516d684ec. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e25eb79c-3261-4b56-99b3-fa7c6a5356c2.json and https://artists.proofprofile.net/proofs/artist/e25eb79c-3261-4b56-99b3-fa7c6a5356c2.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 0x35464e60520491390bc9f0973fbba0fd51e2d95818bdd90aae077be4b5b83000. 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/QMKSC1700171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4c5bd8e271d094e698da263307c303405fb6dead7c7ee3fefa26f306634218. 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/QMKSC1700172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8e79993897e772c930a73058740cd3795df05ef4b38ca3a083e63191fcd014. 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/QMKSC1700174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524be6024e6393ae579fd0dcc734e6c05c93cb5dedda21ee4e965840a2e44a55. 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/QMKSC1800147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0f0dc9b3bdffb3744e1a069948332ea597229ec50d32833e6f73c041a40bb6. 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/QMKSC1800151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090bd5d6f2b4471bd9ce8dabb9ecf50e7f3c90a789939360e2633e4421478e72. 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/QMKSC1800152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc151289c54317c85b4e0a6f7b0ec5d6025b86a4e0f4a201d8cbaa449ce720d06. 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/QMKSC1800153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcd0628ddcdf70412113f0dd23893148d0300d35f911852230d72b87c309f0e. 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/QMKSC1800154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe4ac584955e58feca370621b795a4bd795a56fced4fb7cfb95e9815b6726a7. 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/QMKSC1900525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2901698b8152add4d7a3d660e413fa05176e32d1b4521c058cbba8dc2f5c801. 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/QMKSC1900529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3087bfaa12e41dd77e931b0ea8af737546914cbaf4df4249448b72330a41ef9e. 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/QMKSC1900531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12f31b1ac57151af738c4e114a4b092305c45e11a3a1453c6f32c219edee33d. 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/QZTAT2455978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1790a25fe3bbe8913ebe53b38fd4015838f0329d81bebe7bf668a43576d84e5a. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QMKSC1900389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492170cc8b0b3e31e0628de3ce715eb694c1b31832959cd2f6e251b1accba0e6. 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/QMKSC1900291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cd40a0fe486dfcd7674cffe93b059f7efba4ae749e22a15b9bcc53484fcc5f. 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/QZQAY2176720.