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 0x0c4837b46467f61dbc83e571996445355aafb422204f7be259fb54f2cee0e442. 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/296065d7-c0f0-40ca-9efe-65c8f2a64d84.json and https://artists.proofprofile.net/proofs/artist/296065d7-c0f0-40ca-9efe-65c8f2a64d84.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 0x53956545aa5b04aca224f0154ddbb619cb2d98082e883ec335e6c805b16f64e3. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAIG2491906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea50b6aa1574b8c13cdbaf69b93c4c1bc1881b11a6664e2b28d8e578fc1412b. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/TCAIA2469833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f472915040d7af21761c656cc2c0e0089140d4edcdf406ab026bbf97468375. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:51:38Z), 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/TCAHR2324162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6e12fac0fe966f66ff9252f297ae61f5bd0bbe413f6897c3d3a561c5ae8b86. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAHY2415960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd1139674c2f4d850cdb874cc2ff4a41d111cd903e59776601d853ec00525ce. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAHS2390421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7dcce58d65b8c489a5ce738e9056bc1f4976521ae8749234751230e40b7199. 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/TCAHU2413998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042576788a47366e2e8c3c1ca1fc183c96d9b4a2e1b61973fb666eaee8607aca. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAHP2347283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079021d5434b9acaf332ade034ba7768e0b209b7641009b4a3973b3dabaef201. 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/TCAHY2451800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbbf0a99564365efd4c741ddefaacf9c6459de2c9b03d548bf1222f4b741b1d. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:42:26Z), 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/TCAHW2412105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce19a80714c8d93571ddd6333e8c009335eb574d004412913b11d2683ceda4f. 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/TCAIT2460864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb299adc9a465ff90601959c5cfc551cb3abe65cd65d448fe56dba787b0e2495. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:58:41Z), 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/TCAIW2463195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a3ab6b167b2f9893efe3d7966132d8363e1e51666ea9102842ad11b244ce43. 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/TCAIZ2413806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0097bc8f9917186ec85f385aece496cab5fe7e9c695bca537482e1473c610940. 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/TCAJC2485544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce19a80714c8d93571ddd6333e8c009335eb574d004412913b11d2683ceda4f. 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/TCAIT2460864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931e04de6d8d6722683aef680692cc85550b9bd0e6717c101eef01c57cf337f3. 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/TCAJA2407694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb299adc9a465ff90601959c5cfc551cb3abe65cd65d448fe56dba787b0e2495. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:51:34Z), 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/TCAIW2463195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbf6c053b20d89fe2c0fae7abe0e6121ab4dd4f132bb8517c3a46068ce817d3. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAJB2485609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7db43858545bf7fa243bc3a463e5abf1dbb83e0a8ea704ac5524037255200a. 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/TCAJE2472209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0097bc8f9917186ec85f385aece496cab5fe7e9c695bca537482e1473c610940. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:54:05Z), 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/TCAJC2485544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1a498e67484988b35ab1e469064a9f3a660fd8223060266ab61f224a9dec27. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAJG2527455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a3ab6b167b2f9893efe3d7966132d8363e1e51666ea9102842ad11b244ce43. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCAIZ2413806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689b20d6f4503402ea05a8b2cd24f582e5ba8f0ad281aeb7644d5ae84bb9a105. 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/TCAJI2554583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f4dbe06d96dcaccfb83d1a8d387deb169bf3d60346c9a372c77dfe679b93b2. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:50:38Z), 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/TCAJO2515239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb68509aa8047a411ad1dbd16e00e30ab39de891d19a6b6b0748e0d2784b39e. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/TCAJO2515299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a186f7aad9015cd363c87de5411b751c0e5884aecb181b26790cea3f3e2a3d6. 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/TCAJX2594744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214b929dff9d7317da05fe2845f8ea04a2556d076d19d1629e3a818593b177f9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:02:16Z), 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/TCAJZ2567193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9581c806e99fe5543ccfbbb093b2855a077a618b02c53c74d517cf91712a7921. 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/QT65X2548378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9132674af0df370fb44297d1d4fe684fd571c5b06be2100279f93769a9d72a. 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/QT65Y2586806.