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 0xe0dc7bf86d610a7c8629605722d1e7befc5aa32c88d482738e811ea4eb23cb95. 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/f469aa59-03c1-4e4b-a57b-fc265ea22057.json and https://artists.proofprofile.net/proofs/artist/f469aa59-03c1-4e4b-a57b-fc265ea22057.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 0xd1e4d0c9401a7b564f5deab33078c1d49f988154be8b0b1ca9bc0164fef22939. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:14Z), 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/TCADR1888350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc498c0ada3e6354e7c0bb2736ffd0f704cc39d0e7c44a8e0f1347193d3ee49b3. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/TCADR1888358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8919de95fe4836e47b048b01a4326f9b58d8a166d8e5903ba5f9613e14c976. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCADR1888363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13e43b9991c1d6b49cc80668ae564522af6ad06e3bc6ef3593b85ae7b67274c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NL1AP1902334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e2dd24eca4e40025e8cac6a09640d8cc6c372ff6fe8fd0b9900e57c11c165d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/NL1AP1902336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e728cbf1e6f77bf109a6a225648f6e0b819a2fffaf1774b0c29f29f32c01ba. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NL1AP1902337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda65b6ce23f520b12b5daafb1bc317a935d0c61543e38a8c67993fc5244c46db. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR9W11914285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32954e6f0b983c39446255598ce43668bfe33310f8b2e48923360fa1be1a221. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZFZ72243824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b84261d9eb6a11bb94a2512f8eaa8dc7fc78baa9e5651f764947bbc35f03bf. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:10:27Z), 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/QZFZ32210461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436f06b56cc11a983f72e67390426560279b459eb28a98886eb2a85eeb8c78d6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6P2292819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8784a40fa1a4ac85850647b1be2b8cb7b9ac6a423f2994d44d91663413fa4530. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6P2292821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76755c4fb518481564cc61901d4f3b8677e097d722fcee3a6ab26c9295488d76. 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/QZMEM2319469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f9a679bd7d671a1d7977bf2ca05d607e3b35f8c97db5409ebad72012915445. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZTAT2318856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86db78435cc4786c3d3d8d17955936a538df68aa6d3cefd1315ffa804407c7ab. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZTAT2318857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda12b1da897afc72469a67ec72cdb042e7f5e083e4465ca9d3de9c76e802713. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZTAT2318859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed8e6f3918725ed3303f01750d1a8e4c3eb972a24d2adc211d797a7394ce885. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:18:57Z), 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/QZTAT2318861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d36fc240f136121ae2fea0052d6b05f644c5dbf56f0e27f2681e800aaf60ad. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZTAT2318862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe402d7ac2c01b4117013e4be62064a381ab4f81084d9573b53d53fbda140ec4a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZTAT2318863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2b90053cac6518d455e6f012005232a2696955b20824103a462ad32d086097. 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/QZNWX2475869.
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