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 0x9cbed02df8aed5887c69b44f5d22e9c22ef98fe89c6b096a6c6fa4229b07f236. 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/986eed79-86ec-4b45-b5a4-8e0cd560f5c7.json and https://artists.proofprofile.net/proofs/artist/986eed79-86ec-4b45-b5a4-8e0cd560f5c7.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 0xfae501efe6e5bf9c42549af49bfa2d5bb7c8f9c83c45235ab5cf9a651d626ed0. 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/MYSM12000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835c1361c4b226558656fa6997c3c79b3729f9426de935744e25e201409d6c52. 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/MYSM12000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c18cb741da3aafc30cac685c371da92ec99c7b639e95873d52aab0ebe0f3788. 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/GBLFP2212036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0917ada10ec0105de03e8e665b8f95d30554db3141988f72325dfbd0cc5249ac. 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/GBLFP2212037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0839c98930dd6690cc3b0f38a59ef15c32c7df52a26899491adc16ba49d977. 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/GX3Q92092721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ed96ac14bf212b5a123c1372c951fef4b08bd5d7e34461919d873f9daa7f2f. 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/GX3Q92092723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1043fc13b65b01aeec0d7d115b51963ed22a9217b69f70f242e90f50e9f5004f. 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/GBLFP2212040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943c1403ab705f21484d1e7807660c38075d0aa4415f702c475086cd97649f3d. 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/FR2X42423597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb424e30933b85878a18b2508d49af5379c323caebf2c3a78b0712ba7e2a7fd4. 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/FR10S2419065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943c1403ab705f21484d1e7807660c38075d0aa4415f702c475086cd97649f3d. 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/FR2X42423597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb424e30933b85878a18b2508d49af5379c323caebf2c3a78b0712ba7e2a7fd4. 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/FR10S2419065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38ddaffb11a89586b7891ac91f6e88a0171864e6317925d1c18d2597f3ff703. 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/QM4TX2348222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a86c955f41c31f3ee33e47a782430dfaee18b50a83be0e85ee6c2514b308242. 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/QMDA62222806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a86c955f41c31f3ee33e47a782430dfaee18b50a83be0e85ee6c2514b308242. 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/QMDA62222806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ed96ac14bf212b5a123c1372c951fef4b08bd5d7e34461919d873f9daa7f2f. 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/GX3Q92092723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fa9bb5675150e21b2e1539ec1907eb17066caeaa170f2c45e60e09855c8a03. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QM24S2010461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5475ebee474c601912a3bc6b69a8dc3761cde5c85301a41f2db7b4fb7520b2. 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/QM24S2007727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebcad259a6335b5d092f290659a60dd70623af90df6522c46805df2c38684ea. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QM24S1925639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bc5f3835a236802d492f7cfdb979097e346703e3306f7757df31971a38b80b. 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/TWBR11906002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835c1361c4b226558656fa6997c3c79b3729f9426de935744e25e201409d6c52. 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/MYSM12000006.