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 0x840c76c04dffbbd48fe9b51b64658e97e11ba4eb659c560c4032945b877f32b2. 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/9f419196-d184-451f-8cd3-b86a4ccd1632.json and https://artists.proofprofile.net/proofs/artist/9f419196-d184-451f-8cd3-b86a4ccd1632.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 0x7f4682443852e53e12031c54429b050347c37bfc4d7e030aa6581e20e4e73085. 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/USCGH1860414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a79668024a086e4fd51e147da06d9bf2f8643f23cf2739e696a18a2109001b5. 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/USCGH1860426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a304ce4a9441851e858dc5c507cdb63ac1d5b2eb1d6ec073c3818b906852b6. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USHM21863264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7c283be3670514439f4ad9060d0b8f34ce8f9db67e3c447b9c355051bc7522. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USHM21863265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb04c593445c831fbf549fc596f17f65fb9e8713ee0ebdf92e1d6ef0102e962. 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/USHM92060341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb04c593445c831fbf549fc596f17f65fb9e8713ee0ebdf92e1d6ef0102e962. 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/USHM92060341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43073fbf8315d86cea5b114389cb3d8fd7f09fd9ebd8942354631d2e7456a9c. 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/ATID32300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f90eba0f8df1c62428abbfa51ab6300725054edabf2fade56f9ae33eae23097. 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/ATID32300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7035bcf1bcc40c336cab0087502ec899c2d9dac879352f805182731faa2ee45b. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/ATID32300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d553df91968925dad863fc2d041a6f3b67c82da58e1aeaf39001fe00c238c3. 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/ATID32300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb641fe6b1e6ac9b466deaa174aacae64ffb217f69d2315ae9d51d9ded43bad. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:43Z), 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/ATID32300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3670a3e4ddb0d95068f17a1efa84ae7a5b42a258ca1463f932c102704c2f5238. 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/ATID32300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f6946de94dd32f467f4c13131b1bafe7c031afb4b710f7cff871404803de52. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:21:18Z), 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/ATID32300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6607597d58934902865314e0fb3de549ac32676fb298de22cd7c7e561adce4fe. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ATID32300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14a9ae1886af1cda9863d358e4dfcd0c1b44cf1a15a4cbbf79501b995f164db. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:47:43Z), 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/ATID32300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43073fbf8315d86cea5b114389cb3d8fd7f09fd9ebd8942354631d2e7456a9c. 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/ATID32300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f90eba0f8df1c62428abbfa51ab6300725054edabf2fade56f9ae33eae23097. 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/ATID32300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7035bcf1bcc40c336cab0087502ec899c2d9dac879352f805182731faa2ee45b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:32Z), 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/ATID32300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d553df91968925dad863fc2d041a6f3b67c82da58e1aeaf39001fe00c238c3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:58:29Z), 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/ATID32300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb641fe6b1e6ac9b466deaa174aacae64ffb217f69d2315ae9d51d9ded43bad. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:59:21Z), 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/ATID32300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3670a3e4ddb0d95068f17a1efa84ae7a5b42a258ca1463f932c102704c2f5238. 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/ATID32300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f6946de94dd32f467f4c13131b1bafe7c031afb4b710f7cff871404803de52. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ATID32300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134af31b5fd9874a7adb2873e309bacbbc97a7f8b257ac2aac077f70fe57083a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ATID32300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16652f49c2fce1e587d8657dbd8f07921086f31cd17a2c5b1535221c9a9e923c. 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/ATID32300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d329dfc5829d411858b7c4bdfc19f21b1f59cc757619fc0d3b8da9af0985e74. 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/ATID32300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e9636f5c56a300e3d9e381e930fc80187cc0ee514be091276abfff8ed94b58. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ATID32300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6607597d58934902865314e0fb3de549ac32676fb298de22cd7c7e561adce4fe. 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/ATID32300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14a9ae1886af1cda9863d358e4dfcd0c1b44cf1a15a4cbbf79501b995f164db. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:02:39Z), 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/ATID32300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1756a1cdbd014c46f18fd9ccc74682bd59d6a02c38fe55ea25a28fee3404f0. 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/ATID32300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f73283fc9807b554e99cf93500aadd921ad9593052415a8c8ad10ccc9f1139. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ATID32400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe98faf962657b731c6677264666e2746445b519635cbe8d549c94e63a0039ab. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:49:35Z), 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/ATID32400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfc2c37a200dfe01275dbae5cd2e659c0c65ce53c21fdb533e02749c80f8917. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:37:46Z), 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/ATID32400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10adc529e19c5ce45460303459ab45a63fc77aa53317d8855c0dc0f80301d85. 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/ATID32400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a57db2780f1ba864e593ade5f0972dfc28b1847b7eedca1dd8215c1b225c3e. 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/ATID32400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883fb6aa77f34f3920290048852f0852a1d0edeb0117272d4ad8b1afcf0ceade. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ATID32400011.