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 0x4d9ce0fa769357c644bf25cf1de26847c62992dec94b10193bb978e78ba09f1e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/048244d2-e3b0-4dc3-a826-298b5f7beb62.json and https://artists.proofprofile.net/proofs/artist/048244d2-e3b0-4dc3-a826-298b5f7beb62.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 0xc87a20f23d8f7f6b24322c6a12d02832d89c8e96e095504d932918803425de69. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAGX2380679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b6dfe3140131ea61d08730a6fdd859982b2518738121baf6df4a89e521d640. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:36:07Z), 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/TCAHK2358769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3b841ae26a5f170fd8046006b254322903c3ebc61ce350ab0ad0ff05bed89a. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/TCAHK2366038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5abe7a9ff75d8f62aa2ab89675f765b759d266b14937389c223e60cdbdb8f8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAHK2375092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2246937554d792cc3151dc4fa4b3869cbcedb2be6eb7fe895e853c1d4431b07c. 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/TCAHK2380830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe99214a8cf181fe43dd65471b5eba17b91f83e50236fdcea7b5d11a3478d4b7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAHK2393336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3daaf1affca4b86f97624ab15a1b7aa8e8e14c2423a750b3e4e6abfcaf00402. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/TCAHL2307208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3927d4fc5d944c582f5f52836f881694f3b8edd7fa0043192ff51bf437b61c. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:06:46Z), 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/TCAHL2314856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f4cf3e4e1d0ca3e9e07709b5ef876d75b7e259684b3baed1e611ae0de5e28d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAHL2324327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9b750f87ea3af24cc91c74e659d1338db8358f1a07af32c5da0f1069dbff2b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAHL2324403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2b30f87cfe41aceedf07beaf67bd2492f3cd1efe63bb582ba235cb704630ed. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAHL2328510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dccabf183220bd0253a3b23dab0685d8a3eaad84148d918acc5844c43efaf2d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAHL2335508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63de250e0736a5c865eb7dbbca2f37e2fc3042ff8773c3ea6c16f11bab1c13e2. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:25:26Z), 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/TCAHL2336116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086a5047bc4ace60045d80afdc057fa98959cd4a2d2e781642480bf4482593bb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHL2348798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61de9e4070eb30b96adbd77fc883afb838c7941ec09990a1bb611780a9d3c8e5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAHL2348571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1803858f018f6c4f5d205e621fa4dc5dd5853db460248579d34868a8281515. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/TCAHL2356215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c45c21285db7e26a3efbe02a4e1daafa0468df7b26fc60b1512736984f620b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHL2382626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29be0763b59cd150090c7e258fa458c676f9b1e3ccc2d3cba629c6fd096c6d0. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAHL2382737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567acbed786fc8949bd4c53bfd61fb5267194cbfc77ee8cc3d014a30d753df6c. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:28:59Z), 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/TCAHL2394354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedfaa8ae5e548ac7fd7839ab7ef56ce51279738450cb9a560c49cf904e68eba. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAHM2366903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e1184c32b161a862a0d18b9fdddd60167bdaf2ac397e478642bcf774234b0b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:27:16Z), 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/TCAHM2366393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8f410726946275447c27a49714764c20a50b40fcf934cffa09780153923890. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:23:52Z), 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/TCAHM2369998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc20af7e3be309162678505b4bc5900fe24058958c383ace1e28a03cc615cbd9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAHO2302865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21911b4a4fd55edcfb8358f602b46e5b13918000c4e00a3b5dda3dbad909495. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAHW2473064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83916591f80d1a6b89f7d245910e8f8e29cfe16c09b636fa59261f275cf57d0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAHX2489822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca9d092e788f97afa9e16016a9ad1430b93b62c2486e4f600569a30947f6e92. 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/TCAHZ2471912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1357427bd4b0615fab3c22f998a1722d44fc3736828f71eaab4e53f97d6f0fec. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAHZ2481814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc483437ff05cca87d266cb80912eafcce434a33e30f5b07c993e8697ed0889f0. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCAIA2488293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57148683595b78104d34042b67ff1cf9e98d5d16992b1708eb5f2fa853b133f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAIB2431774.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a72483cfafbf32fb9b13c222f285e50ab8ccdafffffdab44f2b782b09dc04c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAIO2444973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe85bbef558636a0c4958de7f10e834b376f44714c4b1c4696b260326a210005. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:18:32Z), 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/TCAIO2445044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2188fde122e2c081227813bde09b1cb07429cc985ed0ceda3b7ed4325986aca7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAIO2450219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc3cc50b61fefca563e3026ac1613110a491626618373bb3fe716a4b2564e31. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:44:47Z), 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/TCAJF2591624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90191cd8f76b4ee3f2522c251919e5a81ecfb0ddcce84f03f2cda245323dfcee. 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/TCAJN2563268.