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 0x488a46958627b926a27c225a37e71ff2a35cdd4678580a355c73d33f389471f4. 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/fb5e5cf6-1712-4995-9ede-dcd479793e04.json and https://artists.proofprofile.net/proofs/artist/fb5e5cf6-1712-4995-9ede-dcd479793e04.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 0xf7da99ef0f840195007b80438a9d3ec23640657f9d115b8e4a7b89de53b008f1. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USMRE0891506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6fbc045f8b7cbf9e48aa9a3a99ff564954514914602c8202b3ab9759d1f859. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GTA010707542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e96762d83514656a4d72b70f1fb6542c67eea7c3fa606a9b8dd1f1c4c654fa6. 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/QZHZ42094705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2dc5856b1f06c3fcd0f65045c08d0f89ca54c6552127b7bca4c1c4858328fc3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHZ42094711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174194b44f6a90fd9c531d1bd4e72ba0a2caaae908b4880c94322ca0c65d57e7. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:12:56Z), 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/QZHZ42094881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddf20f961b9edd202106d94b9d64353319e0bdaa16b5333c396435ba302785c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:45Z), 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/QZHZ52063931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949da7485945ea2eb7db5377000b81ab9c44b84fff7efe37323e40db43f59408. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QM5EM1500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd302e26735d59ba9811bcb5abb066aa746e7f8a1663a4f538ef84e71e6e76910. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:39:52Z), 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/QZW9K2230022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7236d44ff192a3d9e7127aed435e0e2c41b8491ba639ca3f74a7c9a6b0a4cce9. 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/QM5EM1500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4dec5a0078f9018998fc4f44ccf0233328730b6e800d46aa71c85cb04cddbc5. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QM5EM1500093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7838f912d85d053f4aaf8f1b9afb1242672781a77d9b4d74e7124c8ac1c2290. 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/QM5EM1500095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc6ab87bd35fbe7ecccc4e483f82aead667eff697b67def66b441b5821aa55a. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QM5EM1500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c9db0aa2a3bab9a10b0c6ff437e6fa2cd3ce736261420d9829a1f9eafd4916. 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/QM5EM1500107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cb9be612851257e418c1c061bf811f174cf044a13cc4a447a3ca0569fc991a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM5EM1500082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e5a88cae037d05e1a73f7a4efb2d084638f03387f0032a52248c5497ec5a63. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QM5EM1500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa853da10c3cd9e0a80fed2b12a213b1d74f089c22ecdaa212321d999085ea58c. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QM5EM1500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eabaedb37a2ac2075577429ceaf69d4da089fd170a61ce7710e40b28229cb10. 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/USJE61605083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46105382d725e219cc0b28921302426c154dc71ffbeee7d46ca918616a8b8486. 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/QM5EM1800227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf77e617671fa03fcb3f792615133ab9f967a0346791a06bafb0bb55fccc311. 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/QM5EM1800230.