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 0x4aa17958484daf5fa016698e805ff00dc318f8cc1aef107276a802a9df35e86c. 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/afd1312d-017d-4546-8b9a-fc284c4ad98f.json and https://artists.proofprofile.net/proofs/artist/afd1312d-017d-4546-8b9a-fc284c4ad98f.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 0x926c006cfebe0a644ff8413e5da0d6a955a2c84a423515070bf190ee6e9429f4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/RSA221820697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6116b8c6244900a3a962cd6a677f83c490990a2f164b4448f89f1df09fe28af. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:08:11Z), 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/RSA221820699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed7b6ca10290a274a96854dc72da929bfc8c2a71d6f2ce91c8694ac5b0e66cf. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/RSA221820704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbed95b74f83873d6600bd06a35c87462106eb3a8918935831f8edaaa80edeb1. 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/RSA221820705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d700d226aa68268622707355cde1e3b336202f053976a1b803d1ceb4adaf3b2. 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/HRA8C2100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc913e1d40f1ff4279e0dc936b83facc981781ee705c222fb25919e3cf36779a. 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/HRA8C2100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df3525f5598f21acd2c7f02c23daee3a00d72d268ee22b05ac758f3118e6194. 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/HRA8C2100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe374382fecbc7a60a0efe97604f36eae7aef284d6946e8ef5b2f9e8673acbfa0. 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/HRA8C2100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb84bd9e45c9949a965c1828882b543f01921f4d5554d31dcf8362cf80eab14. 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/HRA8C2100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cf138e5d33ed799766f5819fc5277c9ee3f2ec75c44f7056199592c4fa2a93. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:42:42Z), 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/HRA8C2100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33c687e4ca4cb7630110a08a263f8e7a2aad68abc80d19506dd9daf03b5ed12. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:14:40Z), 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/HRA8C2100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a66f9d918f75ca42b29dedf2d5c68e1173b0d8deb59798fa7d8464dc9eef49. 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/HRA8C2100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3faba628ab84d68b740bcf98d7ed5a34997bc37a71c05a5eca1c10b5ec45bb. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/HRA8C2100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b4451872f545e64d4b917bc83648aef98629b73e766e5a2d68981980a5b791. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:06:30Z), 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/HRA8C2100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac0255c4c271af165c5071abb5ec24dca20a5782a44e0e6fa24273989ab95d9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/HRA8C2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d7ec15b4136e9c222f4b16c845a8fa70b54e33c80c53727a18becb11b65709. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/HRA8C2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb412e4c8d56161cccfb694ec4e363d5d968dfaaebe4d9b78aea83f8ec372153. 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/HRA8C2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ae47159707fcdd4cb80cb26f39da852bd87781f966b18d7f5259c05fdaae62. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:12:32Z), 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/HRA8C2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac33d893e36bbf35c199b2bab7bf763499221f49853c6519815645bf13dd2b0. 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/HRA8C2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca8c89cd0a0c733d60f8d97933b5cdc56956df38ad3a15980f428f57d17bdde. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:50:22Z), 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/HRA8C2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44229948a5a187bd8d4a7ef8db5053608e587ac7ea763ae5b6a3a89a2936ef5e. 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/HRA8C2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec74b582476f3efa86d54f5f23babb0eaca775c0bb0cbfe68642c631b8a313c. 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/HRA8C2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1db7d5a1f002c1dfbb0acce1f360603c971fa20f5e8f2746f8c796eded19fa8. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/HRA8C2300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdb92a0fc1b70b4e649e9260f6bf29e6f41827f7f26aa622e8df5f7947d39f3. 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/HRA8C2300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8ee7f9b29c3277f3fe04749307c27eee2a7c812518328d3c7ede8b36d71d7a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:45:26Z), 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/HRA8C2300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c10ad6caf530870ee74709b9a99b69ab2ae12a31b0b60b085dc8354f388b957. 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/HRA8C2300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b84bb681916fe3d3f2fcffea94f38f35570bd689751ffd6d493a3b5ec5c65e. 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/HRA8C2300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa95e5cc06cbe7533d79331096b3ac2b8275fb4d156ea126da697b436615823. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/HRA8C2400254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d51a26ebe5af0053574b1b3896dae4d7d6f531d7b4bf05b2e41629c15f05d4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/HRA8C2400255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b3125ee20b8e792d6fe4510b13774d24e67033415f87bb8c584df1ca13267a. 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/HRA8C2400270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36367698d3b31279242f5df7215e90185c94c98d9d8eff97d5a9d1fbb7561410. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/HRA8C2400256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0927c4a2480aecdbc4bda1e2cd500470112bdd96e630c9694307876dca627b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:56:17Z), 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/HRA8C2400271.