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 0x2319b131c4ace4c147b8d7d3af10929b1f15256794513e82aa49619ae2edc31f. 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/a1e9e694-267c-4e5f-887f-e77fa9404f3b.json and https://artists.proofprofile.net/proofs/artist/a1e9e694-267c-4e5f-887f-e77fa9404f3b.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 0x7354fdc50d25251ace72a1bee8f27a7d7d23743d370fb2bb123c63b226267cd5. 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/GBLFP2195456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef878b7a89557a771d6d330b97722f07d3d14fa585c0cd9fe62040cc9eca59d. 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/AUBEC2123843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6ba9c32f2b695142a1cdc1fe880b3ba6081e6d145c2f1ea9f4d6a2ecfeeb11. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/GX3Q92198220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928309e3b0d40cf850b52764662c4ed818c6cf07ed22aa62f85fdf6693fcf7d3. 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/ES71G2209560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2360a8af7875cd2353bab216cf1f9d2082e79ade938b436c13237f4f3a0f6b. 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/QZNMT2257820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9854f42017b957bf35d81cd3952a70c66214b3fcfc5ec9b02dad61d5f664c6. 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/QZNMT2257821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0be3f665ee83e515be656a4630d335b649c31b77acd28c9d658331efeeb443f. 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/QZNMT2257822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1497bc226c014b6d679981ee4ff9e5826f56e0fc24da674f7eb4f3479c65bd. 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/QZW9L2216873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281faa756ac16a6da1cf52e917ef8b7a99c5cdd791df18e030bb49f5c77dddef. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZW9L2216874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f625b31afe37aebe17555bbe034a7b711b1e515b96928e15fa1917910c70b5. 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/QZNMW2266172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f7901d3a31856917bd554664535da01517bffdaad688a0dad46fb62414da79. 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/QZW9L2216878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ea1790e2a4061a3fc2159a85b5d763ea740fdf9eb89718bd676f09e35a91a3. 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/QZW9L2216883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e41b06b2c2c7531ee9e9caf106e618e53d72270a41a512dbe00fbd58f2c6c8. 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/GX3Q92390238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7812cb02be4ea765ea9ce9f5b5298c540556140d5e894b1ac00af6b375c286c1. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/GBLFP2314300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631dbe05380df4952743378936d88649169c635a2eb6b5378cc174c4574b864d. 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/UKXN22385666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5d209822d8ac21b6a40f475adcab96836817d7bfdd80af04261fdd8ade03f4. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/UKXN22385654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05788e852a005e40565e8113bd4e1dc50b5c3d8a843d875b8a24004ae733e47f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKXN22385657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132ce62220c1fa979e117e760a5a35556593f1068a1cb150133bd62dbf7ee85f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UKXN22385658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b978df19988b4014cb113177b12f301242e28bda4c35f8e9a697140ee5ddde8. 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/UKXN22385659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc1f4080f72bd156bf820ac8663df21f49d3e89c07f3de9880155d95c82dbc4. 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/UKXN22385660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35a78aa18467d30d678750b7de499f5af01b48aa71cec718615c35219d1f96c. 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/UKXN22385662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44691a283c13c43ca97cd9ae391e650ad12d4656b22aa69ebc66d428aba7b753. 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/UKXN22385663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29503fbdd129e13ffbaf7ccdf2975d5b1b60d3188bc900bd19b20eeb2a5eebe6. 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/UKXN22385664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2914c3b5c6f214971b7c7b030cbde0aaaa9806a6cc887c640793a5b5a810c8d1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKXN22385665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631dbe05380df4952743378936d88649169c635a2eb6b5378cc174c4574b864d. 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/UKXN22385666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593f574323a0f0aa3f01eadb80ff2fe18febbe8b533522a3e80fb4761e53bbe4. 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/GX53U2508322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9a3d1bd04e26fb3507f8d79c35a53622d96d7f841c0cf758101a860d149045. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:26:43Z), 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/QZTAY2539766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3fb0303537c643f7e80a5bba31ff12fa88ce4e5f00b71034196972f2d0831d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GXHAF2502181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf9e7f053ad857af3f09d8dce848d0aaf0d5af45085c4aec3978ef5c7200cbd. 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/GBMA22166420.