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 0x7a491b005a9df320bdb02923e75634fc898c8b8f707697fcafca2b11877b48c5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a091227-6fa9-4563-8993-efa49cbeac9f.json and https://artists.proofprofile.net/proofs/artist/0a091227-6fa9-4563-8993-efa49cbeac9f.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 0xe068bdd947922f04eaf113128173f537af3664b9283a622ee93b076d4ef9ff9c. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/SKG071300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513f5806096491b39db658ac0cec0adc3db018c1343bcc1405cb806325792d1d. 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/SKG071300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47cce09d164d3e4b19b753dd6b4e7b7b570e58c2880e2266f1e72fb3205facb. 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/SKG071300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113f11e8718d1a0032ee7aa674b84ced0002a080af23ca4a3230fa8f4c871772. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SKG071300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5c950d77dde9795fa797ba03149a6e838011ebf724d16c8f6ff06fbb44ea30. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:04:57Z), 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/SKG071300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1ea8c6e01fc912778d91509897eaca23d0779adab0b5e85819586e3746d937. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SKK371500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fc96bbb966ff5352cd1fab0fe28d570dc56920e361eb1523635a251cba7941. 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/SKK371500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3761c2cb98b07acf6e368922a67bb0636377c407c79a4c12b194fca858f80373. 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/SKK371500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e9896e77645f3f9bfbf2b5f35e93e4636bcd3e6abf80da4108a438ec43687b. 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/SKK371500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6be081444f0c073831e30056cabb222666a4a2d65c513c96849d7a49d50b081. 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/SKK371500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071f14adef0ad6b3fcfe64bd52103387dace12642fa778a66dc3ec18105f45e4. 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/SKK371500107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b96b69751f7148f77da0c84b1d30ce84249da9eb914819cbd79657e8657df9. 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/SKK371500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1987b8f71d07ea5220048bd8ae2f892704fa421423cf890a9158e214a2f1b8fd. 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/SKK371500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f237ddd0af1d52943d2d1033e32d67d172bffb163355278a25a216b1409b317. 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/SKK371500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1270fc4ed56fa3a5892c7006522e2109d5aadef44fe944cf93ab2682b38b877a. 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/SKK371500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613011689aeeff3794e4b63d9127bc1164786c76a605748a6e428a29647b72c4. 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/SKK371500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b7ee65c48b6ccd74e4addd1c4c6101cdb9e0f4451d95046df629879634ba68. 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/SKK371500114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852877c174b38554262e8058747d14621d51e119ca8239f84726245af92eda6f. 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/SKK372000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9558dac538cba4811a19033ef7aa96c3030ce1c4cb00fcb604a1226fa6f573b. 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/SKK372000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7a349197f8ad5cdc7f64ad5353030ef83a81810835c241814425992ef9a320. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:33:17Z), 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/SKK372000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b71bf2cebcdea51177ccc12b84bc287cd91b439a332425197de774f1ca0a2eb. 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/SKK372000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569dd30649c3c45468a40dea553fd16bdd239b14acda18e27b191c85e3f24af7. 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/SKK372000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d492bbcdb90d402f5bb1c66cd39b31649f42348ad56bf859f56351220ce515f. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/SKK371900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d0bd65fba438e5dacaafaca51e3dca33ef051d8bb0a2cbb1298bad20587857. 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/SKK372000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb94ac715d291c91c4600f057185f20b400a5713499da07f3d7bb1c295c4596. 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/SKK372200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b11b4da54403a35573eed59aa973e7a166d848c94788ad62e5b8f07075f2152. 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/SKK372400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f78fa10fa6593878686786bcf923913790fd758d2e35277ede94060d7a5f64. 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/SKK372400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4651c7ff828d7ebbc6ea8a37476b0f59703d44eb5b2c798dccc00386c1071a4c. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/SKK372300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f7a68e8e158ddd28c70b158f0a796027802870ef1912beda9f739d61d28004. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SKK372400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c9994575669ce4ca26a91f7de3a805feb3741b7eb847928a7ab32aa3e1269c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:40:30Z), 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/SKK372400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea04fdde885eddae069738ee4ac1cfb451f85a19b5313814de61c3ede9f3e31. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:36:23Z), 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/SKK372400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661d8510b4eafe58ff32e7019a91142676bbe240ca5245803b11c59ea7bd9542. 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/SKK372400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6861f60b805dbc433bca994ae0935df8a6913abd8dbcdce54d49e17000377790. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/SKK372400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b674255b3e476982380bcf61001ba71fe853a064b666393c6b971266ab0859c. 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/QZN882111232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3306dbbcf8d6ba29576a830b28f6ea0578a48e073045d892b6854397a33156c8. 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/QZN882111233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f7f265d9b7f561b93af1bb8a116798494dcd4a5527f8f4417e62c4cb438940. 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/QZN882111234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb3dc5eaeff12f94735046ae2957298ec0f4d5aca38b0b64483d14920e21126. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SKK372400201.