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 0xffdb8969a692b18a8643414469c857a76cf734aa4eab8f39732652d13c4b8da0. 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/032b0b39-1782-470d-b9d2-ce7a056fd491.json and https://artists.proofprofile.net/proofs/artist/032b0b39-1782-470d-b9d2-ce7a056fd491.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 0x74ffe9b9fce40042cb101975467c050e9426307c3cb022b176a5edf79253b19b. 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/NLQ8D2200861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389683b55be16532f5657bed3fe492028ca03e1dc4d1e7162b709c206fe64142. 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/NLT2H2300738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7780fea4c4f34786418ed2262c796b64b007ca90769df6a8e1fe5627b01f3735. 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/RUAGT2437208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98f28d3b83ef1a3b7c5c9640c73b056fbad8972e15efd5208530ca7f49fc44b. 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/RUA1D2487215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaed8a2a2bdd456e3ef549d6408ee1b3f2b9322a765f50d789595f765d55fef6. 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/QZK6J2469717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cc05967f88fe191585363ff57305bc70e542688ae078bcaa2cf86dc8f435fa. 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/QZHN92409873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f4f499cb7d129329bda6d2525c30efe766fa298421f925bbd4ee6de6967b35. 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/RUB522400970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218c2751977860e86620a2a2f088f2e4e446d4d8ef20d0717954971f63023331. 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/RUB522400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572764713df3e5d38504d147f2b271549839ad51f9ea852521b4aeda53b10fb7. 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/RUB522306919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c18bb1131dfd9a6a45bfc693bd4001f10362ce1204bb6d770eb79812acac979. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/RUB522306370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdcc73ee8f40b96483f357ab7bc739db90deaddb17886c2a05c60e2c46fc0c4. 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/TCAHI2326268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5e786a0514a22684636b6ac3b10d233ef04d4e4bca8240e32dd87bda303cdd. 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/QZMEM2378518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4aa9474d271293972bc0c158400c91176d39d2ef9972299d13c6efa01557ed7. 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/NLT2H2300318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79512cbcf044715a5a3de091c62a82dd379676aac8739d4b6b90f0cad7550a4. 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/NLT2H2300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180b096be06ea7a49b7ff32bcc7a958a56d196b53862853081259bca7a4848f5. 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/NLZ542300353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd057c7ef011774a5f2a026d71bd2afcc6731b6374c7f0772cf3ba5ad5401b7cc. 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/QZES62320893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd0d3802d8e4e987ce862f463af8c57dacaba7130edc1476b18fefa54ed0f43. 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/RUAGT2221974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffa85bb4c7242373102e76d728ad38d78c5ebe153f7f36af254fe0c278ecde3. 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/NLZ542202218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c971987a9918160d98368b67cbef0ffc7394fa0be4e875d03d9ec6df637c57. 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/NLT2H2200528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbd092ee483b6b6f6c5607cabc1101fafc566d29359b0ad5d3df7ed20d4a6aa. 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/NLT2H2200380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fc628808f6cd503e311fe64d36e3811840ac3facd5acb4370b11c5a0885722. 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/NLZ542200163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60251f185173a77edb61aeebcb6a7fb81a9988b7ded4ee580011cfdb32eb39c1. 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/NLT2H2200349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d25481f1b24d2e741558a4b60e5567fbc18a9dee23b55d7cfe95053ef5cc13. 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/RUA1D2227691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc302c4d13ba3f9149b0b3fb249d682a9bd4a959b7a995ded783d4517956394fd. 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/NL5WB2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc808aa72c7e894030361259d413b1601eac8a072a3dc29c4e1f8d6137a873748. 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/RUA1D2509147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa831cd5a142e57206a6a85feb36ac18ee23e8da148baaa2fcd6a91bd4be450e. 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/RUAH62429689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb70efc7c2b3491f8cd396906f18bffaf5c82ccf4c4e599d453aab13ea4285f. 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/RUAH62428177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91583e4adea794eede11d033135ec3c9de9d7b09c8b73552b071cf853db402c4. 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/RUAGT2480626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd559b4ea90210490fa702ba95b4bb3a3090456dceb1fdd631a9515d13d32d87b. 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/RUAGT2453684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdcc73ee8f40b96483f357ab7bc739db90deaddb17886c2a05c60e2c46fc0c4. 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/TCAHI2326268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa60f27d39a4fce8f7d70c3306547d3e71e89e0d36d7aa521b09ed76fae67c4. 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/USRC12002679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2227706f1aeb9def93d8efa2bdfc4d3fbea42558ebee6d7c8fe32d8f5c6b0afb. 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/GBUM72101969.