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 0x4b26a99d5934372fa2bced4379f3d5c941cddd57cfe1a65339657fcd5df3166e. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4675e265-ecd7-4846-b350-d9f08be17331.json and https://artists.proofprofile.net/proofs/artist/4675e265-ecd7-4846-b350-d9f08be17331.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 0x63945850c35bf5083b6b52eb16cc5c41f96d06f342a975485ec9e0cd3df045e7. 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/FIBAR2300536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fefab3d27341c348b848be68840323286570a698a7b535ca29045f3300f2b08. 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/FIBAR2300435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efdedb0493e6b574931c8a725f3aaa1bbdbbb68b1f75f955624018b0bc1f8c6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIBAR2300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05083aa9d647fa0ea2d7b9b52f9248a4efa6dc43534f78ce43fa7f449898836. 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/FIBAR2300537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607ecf0620001ec4cb38b7ee4e5e0ddf3f8261251e90ba3c2faf17000165e83e. 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/FIBAR2200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596b60c0b6c0d383c9bb1d523535f9cd37629f27d925268bc1ec566b94968152. 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/FIBAR2200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94aa4c11dce370b223d5e36dfaabf259aae1d67f9476dadc88d20fb84804512. 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/FIBAR2300538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6ad4ec01fee29c6a322393ba3c1eab69a289c5b77f96a87d9a45943ce402ff. 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/FIBAR2300539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c9b138a7bbc3eb35047a43f5f6d7ad71e1b7ed9a0ca4d174833aadcbae1b8a. 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/FIBAR2300540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86609f9fe930827e3cb9c13f87743a7c574bb0208de29d20d74bfeb876558ba. 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/FIBAR2300542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6181b3ee5f4f623f2b0e2516fa0f6a05a082c41775459c64f201e409e0098bd0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZK6K2307571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c2dee28e47b755f9d51b13edad954db0a1e67304b38fc7ce98b131252ec0c0. 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/QZK6K2307572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03694b004861f4b4bf1f9aefc12bd53e32d8cee36137579740cd394487d7768e. 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/QZK6K2307573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0aef29a77f1c06b4577e0b37716e67f8fd1f343753bb5e75a8a91081007649. 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/QZK6K2307574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2704fbb7ebd440c1c06a7de9aef3367a5c4d10120399f2c6256422f3a578176a. 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/QZK6K2307575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbca5b8f3d5a8f2b4a473109d3144cdc47eeaab48a2138f259a12019e0d20db. 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/QZK6K2307576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0556143fe98f453ba82ae15b6f97543823efe81b6d68a3126d1e3a94ed2508c. 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/QZK6K2307577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0adf4c24ed6710aafb2d024f070f57f35675e0094cc8087d191661575b25ed9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTAY2352389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b48f6d60ef7f32a08ed02c2b4c8716321f229ee85a3a4ef8490a355aca0292. 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/QZTBF2393923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c90ed4de6039809e9e92d05e22f8201baacba893aa216b0d0a1a81fac84073. 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/QZTBF2393924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdc8589700243ea8372adebd2b16c52d6d64f86145e54fd55fd5f3979de2fc6. 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/FIUM72200269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d59e7d80a22bd122df876f706e982ec20cf62fb14d40ae7f86fe637a4dfaf03. 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/TCAGC2262649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1af37b9fa87e6a481c5fa480e322a46b1ba043faa0ba11f4d63b4e74ef9d08. 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/TCAGE2218765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc6b9870436f04a9f8af8d85b6f14e93cfe80c7080adcd42850e000d67da106. 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/TCAGE2218772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389847a316a431b814dd34853468479f11479dbe79c83709dda2acee1346fdb7. 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/TCAGE2218774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311d5e311ca57b8f86cf5e5a1aa704cb07b642df228203fa05a79ae603dbf081. 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/TCAGE2218775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d59e7d80a22bd122df876f706e982ec20cf62fb14d40ae7f86fe637a4dfaf03. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCAGC2262649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c34cc87dbcede36b560156b36db704d80b9a27b3cc778cecd270cd14195544. 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/TCAFU2152391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0d12c041a34c1a1fe1a4de8f8f1059ba69b5da143023117ee2b4dab5ce5657. 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/TCAGE2218798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc57f5dec26299b8d5d5045d1f6a48a92ed5634382d934a1834a5873d7b3f0bd. 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/TCAGE2218801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622a74c926a2d31ec3df5bfe51587a57c7f11f39f9b2f271502639480c2221ec. 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/TCAFU2177351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a4178ebed94554671383c2c097d91a827564e71e5bbf822ac62e488330563f. 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/TCAGE2218813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63746e8124243cc6df422cb41a78735cc861a59eb0d43caafce728a6535ee3bb. 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/TCAGE2218820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fc5a8c90bdc5d1f9bd4b533ea6025e4faf58c8d15e480a1a58c351bd486bf9. 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/TCAGE2218827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003fcfe9f93cc0d1660edd1355115adc59af12daee221000828b44845d388d1b. 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/TCAGE2218839.