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 0x503c1c1835a8931266db1cec3713fbdc3b2f58cf333571cc717e8a690995d0cf. 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/8af95e01-bb73-430c-83ed-78bd33358b17.json and https://artists.proofprofile.net/proofs/artist/8af95e01-bb73-430c-83ed-78bd33358b17.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 0xedc43b8c7350ddb15ee1028d8c1ebfc70991381a43058b950aba6448e9fbfb36. 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/GBMA22589837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3563a6051b3c23aad9a31959592117931f3d79d8fcb2b4ee30f82b6829cc66f5. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:05:48Z), 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/GBMA22589839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6785baa78d97d0ac4acee1c60d6f8bd939144ff1d4d12d293d20444e31f0995. 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/GBMA22589842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a35317a3181ed303ce5e620f2c4da76b401a7323744613c58774a193d1feb3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBMA22589843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e42449fd6f45ec7ab3afe90c8122a2f9eb4ae79f2073c790e0dc5cc0d05705. 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/GBMA22589844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c7feb2902fe130a404d0be8533e603adf9596c586efdb90dc9d7097c1e602b. 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/QT3FD2583582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec94c68a12cb82527b7ba4d3fcef78717033a8d989dedc0c7fe04e39850d891. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3FD2583583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493ee7376b1a099645cb46abbdc1fe30a6de5ebe592b986c9353d26db9ebcae5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3FD2583584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0583debac892a6a71e98fd13f169b0b4e3b027f799f43ca25554d53c7ae806. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QT3FD2583585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ecd8b7919e837939c97e393687e68b7e404bd5ecf16a4adf9efda1bd984a17. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3FD2583586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4704582b5211d6375a38d1161ecb0345658a0572340f42bb5a476df211d78e. 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/QT3FD2583587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c394424fa2b6b14331fed98c456af098922e62f466e70af266f6e8ce89fdda. 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/QT3FD2583588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d007353d9b18b958cd1a8a16ae4a2d59aebfb6824e28d4d3774a7db1b7ec0a. 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/QT3FD2583589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1274bdc8ad17d466016ee521c433c7bccca7ec43352f90e771a1929318cd3757. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3FD2583590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572879e8040a338a42796de0cce78c36e7fad766b1d08579bab75140d2c08f44. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QT3FD2583591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad068c014e59522f060547a809b233c3a069fc3e5cea87c822ad7f9e521b657. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QT3FD2583592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74b2b0fd15ec1560b7c31b07f7d7f708365a818b73cc9450bf16d1814e3e019. 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/QT3FD2583593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00928c9ab9d109dffde1e69784eeb5baf9ba699fda36634f79d3de614af38b4. 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/QT3FD2583594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25c58eb9ef67d5fd2bf0b6265c7a08d33279a73a32759967d2cc3d8ebb5b1e6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT3FF2558765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d50c3439dca4bd9d4ab8a58ecd432e30848ef1007978e3ac86f2da13bd15bd6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT3FF2558770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b85946b15828ae6905ad3b0ec4813dcfabc80e4489a0baf8d654ce1af2ca2ec. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:58:39Z), 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/QT3FH2526146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece0896107ef16e4c53af4800d050441d7d88f5c681a6e8f7b089f373a30e28e. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:17:30Z), 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/QT3FH2526147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5cfa22267e65d132d76e1090db7e32e97a779f60e3b58faae0f032d2498dba. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:53:41Z), 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/QT3FH2526148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7c600f1127f35adbbd8a810ae33ca11217d436ba1fd2d6f9284ea9703ca469. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:52:00Z), 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/QT3FH2526149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf37d74d96b04e642e049e6b5f800823d72e9a7a24b217f8ac34c276908df66. 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/QT3FH2526150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1b67c4c86eaa722d1b7f7e0e2e4bac5f0bb59c04efe5768e2409bfb19a659c. 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/QT3FH2526151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756298cecd4664a324f1b0fb998e9428b4254205af3dfcfa788c34d535b6574e. 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/QT3FH2526152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc178b226eb25d3ee133d446385102c0081c9ac2dd1ac6adc5335095dc43ee8d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:01:00Z), 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/QT3FH2526153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668c0184c04f672345adc42bc1f68c5a53737efe6d86d62256dc99583bebb524. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QT3FH2526154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777ac0eb04659bf71edf686ec0cf65336d3fd2b2a65752588ebb51c8dd87b3e4. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QT3FH2526155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d3d89d99316c82859d1a222847678b253226daba1e5679309d0b24ad104d80. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:21:35Z), 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/QT3FH2526156.