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 0x3c70717fa698278d45bfdb5c37ee8aa7d5ebc1f704a0000607baf5667b4fed94. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/936801d9-3984-4e91-87f0-222704e3f78a.json and https://artists.proofprofile.net/proofs/artist/936801d9-3984-4e91-87f0-222704e3f78a.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 0x21ebffe878d8e3ea566e50cc46ada7bb5964bc91f3826837dc66717b5c61971d. 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/FR26V2079498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec3d03c47f8c17382d09a8fdb52f113fc7bbc8d0b12d0a3b8f44cc325f89d32. 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/FR26V2076380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fceb6ae2cbf72e327aadf69fa213ca7a95260ee524ef2f8236364169e2ea2b. 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/FR26V2047287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748dd0679ff4c5a10266abc7ce3b8e88283d9c57a84ea0a2ce9314ffa67a4d3b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES71G2431643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6166be7a9aa1e6d698efebaf7c8c88ad682ac462b60764b584f8dd96eb7a924d. 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/ES71G2431644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b17ce0d1453b6843f6793b32b4d1573c3e8d6836635d87bd237edc64600ba8c. 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/ES71G2431646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948eeadbafed6791044c4328adf2950806458f9a79154abdd9f92701ef64edaf. 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/ES71G2431648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9160974ac0a254190c10fc8dfccab90ba89979ed6332e7f77f6dace7b6761581. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES71G2431649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1189d2ffd2f9b72f0e4d516a12c3ec962a6087fc1c7975d624851b072d60a278. 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/ES71G2431651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe301322d4666e2d5e08635a9e8e7acaba55bcbf5bba5fa11e29d2f7a441873f7. 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/ES71G1902279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea02570d8f704391b0f6a29fbc90372b4bbf5c6c921cc203ecd86c031cd6720. 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/ES71G1902282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3382b71d27a11f43cd4081fe8b5c7b98dd5534807215f0efed5a6505ce6a94cd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES71G1902284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092df37507ae500d9980c121c53e80e3a503e5d04c0531643ebfaf7658ce9a9f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES71G1902285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9fb3d0dd7097e2861b15bc072757457e558560df79fca6ec2042b145f12996. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES71G1902288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c0eadccd6a7033948878002d35db3c7c6271e661c2d6d8ab2c8c42b54e175a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:56:33Z), 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/ES71G1876895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4c4ed5cbb054e9b5de6be9225bdb53961465c4075db06bb08ce385b67e2f14. 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/ESA011712823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015fc1adaecb20a1f5fe51335a585bb5b78c02e2a10e3453190002d3aaa89ed6. 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/DEAF71257230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b17ce0d1453b6843f6793b32b4d1573c3e8d6836635d87bd237edc64600ba8c. 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/ES71G2431646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec3d03c47f8c17382d09a8fdb52f113fc7bbc8d0b12d0a3b8f44cc325f89d32. 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/FR26V2076380.