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 0x55357afeef89b988e42a9487a19ac42de5df7622379231c680e75ad731fcfe04. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/872f2d59-1dcf-482f-9640-15e39f31d66f.json and https://artists.proofprofile.net/proofs/artist/872f2d59-1dcf-482f-9640-15e39f31d66f.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 0x0056ff704d2dd7d169cdc14c32bd788c09e3c3e76e02104578117caec53314d7. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USL4R2485146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8d22b9db46b70b1ed979d453f78ed39cc94a0770c40c631beaad8f69836865. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:59:59Z), 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/USL4R2485147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9d81cddb0ee7d2f7ebeb41cfed7e03c027965f607774b84c3f1562dd9956f6. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/USL4R2485148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4452b83b24390c2366be9f4d40f4d28a017a11e9733f5546dc981f20d4660527. 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/USL4R2485150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe471f4dc963490be3f58a64ccb691522fcae849b9c521f94205d956370ba121. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USL4R2485151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235aa541fc0ce435e953b6de7b47278b8cea6c404fbd7b04db7e6865fce0d8c7. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:55:18Z), 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/USL4R2485152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cc15a756c5e2bd06271de929c2dc1cc8f4f211c9363ff21cd84c098104811e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USL4R2485154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6384e3de7797f256fce78a4485a1772b277722ffd85d0e788122345be223d3. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:59Z), 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/USL4R2485155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd3dd6c2a877b9d24aae125b625ff85e16703a8673e5349919c7c6a1d2aba56. 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/USL4R2485156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86e45420f85ff9a46d5da39968e38b8d8ac523d3ca1857b9253b964f4b0ee1d. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/USL4R2485157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13dd633dc8cbb1f41e5b4cfaee1a49d1c101a20b84a4fde6025c2d868e5425b7. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USL4R2485158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5384c3d95f6733b23949a934d0c4ffb7a1b1d8e1ca76c335dcd4523802114f7e. 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/USL4R2485160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd260803377c9e1f76b895a731a9f4f2a9a6c6365eb7d549788dbd10328ba69. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:38:56Z), 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/USL4R2485161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb070dbf46b38017ca791c4b6f2b9858dbc932d36797dd1a8e6c1ec5ac5fd00d. 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/USL4R2466604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf612cc0d259c73296e44ef1122acf47d488c51daa47fe64db358adfd6bd8e24. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USL4R2466606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bdd249e76b5a85a100d6c30c856b0e125cbc814e8d4bd15ac5eb3bac11f5c7. 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/USL4R2466607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3bd756adf6d19b860f0477cf42895d94f670edbf00d0c2a0944b6b2a31b56c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:43:24Z), 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/USL4R2466608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf74faea15712c6d0d9dd5932a189862ec81c0833961c0f94c29d6c61dfafd9. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:35:42Z), 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/USL4R2466609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f8e840292ebd950db4b175b08072980bebf06a8e2244b7b8b2ce5738c43e8c. 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/USL4R2466610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9d9ed18599d02c5c79ebb021c8e5797a02312cd6b0df6cc60ef3845c0c40d3. 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/USX9P2469772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3348da24347f2aa37cd44a5a9b957b8ade97687c3e86faf4c93ad70848e4d2ee. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USX9P2469782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9e1c1eb909200c30296dd843d32fe0f385a396a8e48223200cb9c035045f50. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USX9P2469783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7af34ca78be18e7cc313352e68e1c1e3c3c1a7582ac12bc7a7c20a3ca0a4ce. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:52:09Z), 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/USX9P2469784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175888a485f83074b52d4c62ea9162c43e9f2c81d559676ca75208d3be2131c4. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:57:20Z), 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/USX9P2469785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58261fa4307edabbd88e0bddef30893801c077172e4be9427cf52e6aff78459c. 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/USX9P2469786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46709614bcef1a6827b8f24924f4da28c26db8923f058de8ad5a7c534f8ff713. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USX9P2469787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfc8e0241baf733763e85cf9de2e0a9a951112531efacd5b4ccd5a8a8456e4d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USX9P2469788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac6096cd36feecc1e9f16dff9c0275c26c9aab51fd3a843aa95dc335eda0c80. 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/USX9P2469789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dee48aa8bc1d4d54c5204a57979d78f7fed3cf35b7f201e3af02e1848131352. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USX9P2469781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec1044712de0c26479fe5f470b82726458891ff7d4260d05c1f84a275244e51. 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/USCGJ2542597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6270aa07e60e832cb2bc7b6dc003b1d90cc9145e8e5109335d88a91a12375998. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:32:06Z), 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/USCGJ2542598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ef0123763c1f544e8f85cf44e7aff1e03d48f7ba14367a085a2babd002196d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USCGJ2542600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa115d486a5feb34f069a44c7a90180541b5baffc278cca1815ddfa9e910a7e4. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USCGJ2542601.