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 0xf82eb33c058a793202404601f918bc60705f9cc670b0b2b56af9f0e01ea52997. 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/e1a1ce89-5772-4920-8b25-58456a2dbd93.json and https://artists.proofprofile.net/proofs/artist/e1a1ce89-5772-4920-8b25-58456a2dbd93.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 0x18d792344b4f8b6fa5cc4d0ae5c51ef5bc53543401798f4687be78d92cb53ff0. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QMBZ92195866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc675f9c200092bea24117fee07201c174b058ee4798305c39a0098747116075b. 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/QM6MZ2216025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b003384c1fe851dcf4c1b9b624db9e4af788033a99f2c3670c4179855973787. 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/QMBZ92255299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadff9a7993ab481eb9c2762585c8c2be5ed5382b9132fd6ad77cbf6c66314486. 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/QZTVM2269937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2331bc35c45017e829a2380e9a6fe7a33be8c1a3fe54f602772061f39028303. 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/QM6P42312083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019f06e04d08375a4e5e580194e8d39f0cb6cb04c76c1c03f3114b5cf679ee83. 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/QM6P42370085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6128d2c89df916775e1570f6f88c9b55c4edade0f5022d367f1bc66595825d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6P42370086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61aea1b080a6d8101a3506d847c9158fa109a850253ba1ad023758df98126060. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6P42370087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dac048ccf77c48675a75fb626ba5baa568fc90e0c6c0a483ccd0d590aeca4b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6P42370089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512700faa13ad82836d405d8ebf497a1b5dd011406435e0ed922ab381437aeb7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6P42370088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfebdc7641886e4c6d4b5a8f825a1f21e52745d8eb32e26d18f098ab595de7f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6P42370090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52eb62ef1e242d5fd0f3c1bd022bc35acfe44536e70135f1c91f6acc590e8137. 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/QM6P42370091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eccd73503f337a9c0e50583e9c68cbb02702ef58aa7a741c8d7cb2b1f066fd9. 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/QM6P42370092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2331bc35c45017e829a2380e9a6fe7a33be8c1a3fe54f602772061f39028303. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6P42312083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6042addec4f4856c5301d07637f85a7cc53ef5cf3c88b5f8e822cfcafa529a09. 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/QM6P42370094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb242d5c6d70d90176a3be3f8563b7fd52cf5525094a283554fff06ed0fb72473. 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/QM6P42370095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c847c14bb3212fc4288d358168c367d1528f3ba22237d25859735fe4d33f808. 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/QMBZ92492323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a3bce9e79349384006f51975bdd515ff30433c00b3657defa19347059741c4. 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/QMBZ92492325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc2a974681e76651c8b33baebdddb287a5d2435852702d807a970fe396f2dd8. 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/QMBZ92492326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f580e2fa142280370beb33fa6d1f5ab1438d319752a820bc1f4055308d2042. 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/QMBZ92492328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8518d313128646a5e91a56420e6070fab40e34ec7f4d414b93a935855217f7. 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/QMBZ92492329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19a20ba6fddbc6c980d5b18006624c65d15e9f99145a5abed692bfd8ca3a882. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QMBZ92492330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635329b4decc3c7848bf9f9cab628ba86fdb4c8d0b0c726d2a4d288abf45c0e3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM7282007948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1acb5020b07bd5b2a71e0b26daea82a43a7eef071e7aad3b1954c79d0731246. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZW9L2225615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84b707b5b61f2e3a81ab4b637414e8259a5e9871283132ad837bb80458d0984. 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/US7VG2345792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1acb5020b07bd5b2a71e0b26daea82a43a7eef071e7aad3b1954c79d0731246. 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/QZW9L2225615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa566f9aa63b88d6d2097de85f2c35f607079bebc1e0301000b6dc5f2e8ab1804. 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/USA2P2328057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929f8a4e2e28be665de35456dabe846ddc818034110765f4bb4d10613d6a26c0. 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/QZHN92238445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec719bd99ea34c1cef5b43a795ef1a6cf1b436e8797e5db697a6a346b0f9c86b. 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/ES23A2116711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0b016c1c6b213d978b197b758b367d9d87b37f405370d0fcb3207e4b3e6715. 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/QM4TX2167074.