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 0x22422cb06daed125c74b02dba3a3df69996c6a337dc47c0f0e48b613ea24d30f. 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/046979bf-1d79-4e3a-be40-88c5edca0a27.json and https://artists.proofprofile.net/proofs/artist/046979bf-1d79-4e3a-be40-88c5edca0a27.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 0x986a6c727ab2eff2f1c544b6789111d8568103afa4d4e1cd3573bce3b44aa418. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZMEQ2299699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55247f2b6126524bf29a91a626f8410d5e4ae9ec310dfb184b626304aec228c4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA62330831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427ce055e6f4d38ec5c1c41cd6e09bfe4a42d9b61aaf1b312e70d612218b681b. 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/QZK6H2367052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8373661502901ceacdfa8d894cda01c984afc614bb8ba83d09f93eb1569f78e. 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/UKXN22326157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1370a4bd3da18e341ddd668fe2c2d363c021849678c380ba6aad5fc6bd0014. 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/UKXN22345681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4828bbda1f05f051304f981abde78d42810ab0a2db40d455c2c6a4f0dab7ed. 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/UKXN22397350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dd9aea265243976e3d860cc33e611e6a81b36e4aed0138e6287f057208180a. 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/GBMA22408628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9757dc44c7c0267192691d4254224c98336b7a7ac7681e18da7499336c317e91. 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/GBMA22408629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeede3550a40767173faaa1819058ecb1522bbfab9b962b54de9675e6f6c7f1c. 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/GBMA22408630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77161f1390a089349b173ed5eebe65f4f39708736b43f71b2b97ce8a75e2b40f. 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/GX3Q92464315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35002cd71a940a602f4d263d136522d551e76929d518b482024e0127cdfca9f4. 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/GBMA22408631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60aceba78128775d1ef48afb6aa243a30130a23f67ff538a560b6ee6d2bb1a6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBMA22408632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31688f443de7e0f3a1a8b2a7abd046a7dac6305e8625df42e7454639fd236fbc. 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/GBMA22408633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77161f1390a089349b173ed5eebe65f4f39708736b43f71b2b97ce8a75e2b40f. 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/GX3Q92464315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4828bbda1f05f051304f981abde78d42810ab0a2db40d455c2c6a4f0dab7ed. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKXN22397350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a0e62ce08c416829d951507eef62f4daa78ed41274f6bd6137cf76293e0584. 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/QZHNA2454256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8232439a8e5cd96bee663885b74ab42e063416b5856d26c74699cdb71615c82a. 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/QZHNA2454257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1621134a578d0e89753ad57438dfb91a35c97a6b8f5956739bf7d188227205e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHNA2454258.