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 0x2377ed39472079a86cb6fb61724d510210215333918efff3dd4d79f275e917ef. 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/1e2ef518-8d9c-4054-bdf9-b3a41802cd37.json and https://artists.proofprofile.net/proofs/artist/1e2ef518-8d9c-4054-bdf9-b3a41802cd37.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 0xacaf5d9ee1e0c7ef5ba688b4894956c58f9b40994c6b51688457810f76aa2df9. 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/SEYOK1520925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4246f025977c1f9d918e3ceba0c9f06c29ce97da0c748490f50fde35b81deeb1. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/SEYOK1529830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa410de407552c0df4ce9cf2cdf10cc73187f1f89c3440676f805979974b6837b. 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/SEYOK1533344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e07bbeabf891b2b88c21e143ba1a4bc1cb64cf3296075df518c91b0429845f5. 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/SEYOK1507025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffff694212269b4d37877c66f3b3893a0982547b1d36a2dd649077fe43106ded. 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/SEYOK1417337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e00591106d5b24d0fe7e9afc5ec64f9caca49e32bf7ceeac591383c08a70771. 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/SEYOK1418292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cbca66d0d5863dd60c410138fde0022e1f1b185f269af3bd5043ae3a43ccef. 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/SEYOK1422512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4f12ea0d47e53e73e00a212d8ee637ba1e2e9dde80afcc270fbce4736cfdfc. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/SEYOK1529832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187411c15b7e1a5e9ec08badd3fc91b23517d9be6ca6a41221e1d66dc4759b5a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SEYOK1533345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf0ff7b1804a338f6022df84d8b34dc5660aaf6c663fbe31d925b43e01a0942. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:56:50Z), 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/SEYOK1417338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f4d3c79fe5d43b2d537c6cafd74548f6bcf890742d7bc969e7989d70871867. 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/SEYOK1418293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c18b641cd3c96eb76ffb855fa674a4a4cc76d6705ce445db210e20817a4920c. 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/SEYOK1501247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339101a8bde55d7628c2df161004a8cd1a3334b84aedf22ec29196ade2a14a42. 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/SEYOK1422513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4351c871f9f5ba798b72d9473a2943d67cf64e6cb69161b7007135d89f1cf94. 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/SEYOK1840320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8d53580a29ce1beeb9eff26edc01f0428fa396baeb338bc149a4e24cf36a73. 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/SEYOK1840321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af2a1c3edd5d220498465263dee91cfa60a8a0d26c53932049a8a666d6eb008. 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/SEYOK1840322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276e953a6d648fadc03c70f3fc1b124621828d121ff5c5bded3198e1481280e4. 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/SEYOK1726593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ef156fbb58f0afed4c0dead5f890f60eedad34b175cd741e9a373df304a635. 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/SEYOK1726594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb0ef21ddad6ac067b9babb85dafa264846252c95284d79ca408b3c3f99e867. 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/SEYOK1613796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3788154083d17abd27e6cac6ace9151c8efbfac3215a5f4fa3883b8109b562. 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/SEYOK1613797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea938fa760e077fb299e167151c11da6f52281af23bafbef3294a56007df48fc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:44:00Z), 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/SEYOK1613798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40342b00aabe802006798b962e352d20e225c98d09be847639a33ba3e1ccf876. 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/SEYOK1507024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4246f025977c1f9d918e3ceba0c9f06c29ce97da0c748490f50fde35b81deeb1. 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/SEYOK1529830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b38161474d179414785fdc73883938c0cff346d47322d7b2abf707a773f39f. 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/SEYOK1529831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef960aa1e3b8093d9683c772c2d6cfda9f45e8457ef296910d6ca156bac6b557. 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/SEYOK1529833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a86977da16f089922229de8ba7fcc24b2eadea3857b00d84d828af9ce4ef87. 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/SEYOK1529834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a32f7b1720a860a0617c1935e1c7f1ea1e09f1b6033e9b8ceef115b32bc1b42. 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/SEYOK1505169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5654328c4559eea891c69121600f5572f4320aca3881bc0d3dd2ceac07ccb9. 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/SEYOK1505172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33fcf77dd382e8f5e02b003189ef3598a99d01a63428e810043bc9db955e865. 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/SEYOK1505175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22020ac626d24805c1773fd9883791b0d47ba8ecf88408946d4ae3f3ac0d75c. 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/SEYOK1826918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4351c871f9f5ba798b72d9473a2943d67cf64e6cb69161b7007135d89f1cf94. 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/SEYOK1840320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8207dced6b8c98c7e675bb44d4432c5586b10580f59a944d6fa40e1f011a8a8c. 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/SEYOK1621976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2130ae225b34476eb9824a75a763325699ec8958ae174e17b83aa8f49d9ee4a8. 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/SEYOK1513426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96daee0cda9c1f51980253d4d83cbee3b17fc3dfd6498690b5850f39dbd5d68. 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/SEYOK1533335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3549843b88308b8353db450819dddffb2da8e914522a0ff32f608a6196362931. 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/SEYOK1533339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d3fcb9090c76eba0d0cb23307b1d7f0b228e1efcc198cc7cf1054a1a73f8b9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SEYOK1533342.