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 0x0e58a820b340f971ce630ce8a82373dd9e5c3f48809cd1a50b7da7636686e664. 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/5cc33283-ced6-425c-b0ab-60f556aef008.json and https://artists.proofprofile.net/proofs/artist/5cc33283-ced6-425c-b0ab-60f556aef008.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 0xd017b22a68235d1da2c81b3794cc0c8a65c53928c9ed47cd04a8e6e80950148a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCJPX2387435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ca897f9e8ff341e7d44f266b0609442c572c7a22bb4f1433c56bf3e7c10155. 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/TCJPX2387420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4666e7486fc71fd56c965ff2378b0bf5dae9cb1bd90cac5ecd0e4cce22e741a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCJPX2387431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd017b22a68235d1da2c81b3794cc0c8a65c53928c9ed47cd04a8e6e80950148a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:36:41Z), 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/TCJPX2387435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a8ad3449cdfed4616420ae09cf6fa4ba910853abf684c590f03e5bcb5c9320. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCJPB2416778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ae45b01ae1a1d19a185a754a9ba83452623a68b6bb218bccce305fefce05c3. 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/TCJPB2491733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fee26566e7006fad614d61a210f4b35d3af62263d1a3072ee6bc4ad08d7413. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TCJPC2425026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffeb499fc47a1918d55db4821783a53cadc694a572584ba14ddbcf2602afc5e9. 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/TCJPC2463066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f0ab158d5827d916637b72a6d4dbcd4468bd5c98f00062e8c60ebe9790fb6b. 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/TCJPG2574799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a0cfdfba657d8b528d3b16b22edb3d8f0d437456812d9249116de00c83a5af. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCJPG2574805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdaff2c902b3e89a06817e875f185ee154f7ce9eafff26589ac460ec18a11dc8. 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/TCJPG2574808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3754e83c368a39d985b217ad6992514e0a8d987dc6180bfe2da6b187230bcd9b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPG2574811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42027a1c70c25d917853162aa31fd15e26827837d89d756e0ae42dc623d8d8b. 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/TCJPH2572265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0232214d9b8bbf62e9a3eb8059ad22c92d6d9486a049b1094995f78c91c4eb3. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCJPH2572271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b620ad779ff500be3ae7f4e0b3d180f2bc5fa16252a1bcb2ec4bf4319ac963. 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/TCJPH2572277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a0cfdfba657d8b528d3b16b22edb3d8f0d437456812d9249116de00c83a5af. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCJPG2574805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdaff2c902b3e89a06817e875f185ee154f7ce9eafff26589ac460ec18a11dc8. 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/TCJPG2574808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3754e83c368a39d985b217ad6992514e0a8d987dc6180bfe2da6b187230bcd9b. 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/TCJPG2574811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62acc0956b9c7203261a81cae8ef19189c4c6da9aa3aa6bf910805351baf4e3. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/TCJPH2572257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42027a1c70c25d917853162aa31fd15e26827837d89d756e0ae42dc623d8d8b. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCJPH2572265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b620ad779ff500be3ae7f4e0b3d180f2bc5fa16252a1bcb2ec4bf4319ac963. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCJPH2572277.