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 0xdb86e3299cf11089c9f5366e75c148d8838997c1be6104fa60f508b5814d6c4a. 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/264a07f9-07d8-4e5d-8085-68ed45419b7a.json and https://artists.proofprofile.net/proofs/artist/264a07f9-07d8-4e5d-8085-68ed45419b7a.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 0x22223cb0211f1cf1a157378f7cfe37f7437dcdcc27c4128d66f92f3ea0765c7f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/SE5Q51701021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59de9ba64e09168430f7c3b754c009fcf956c3b800b6a7784198b965c25534c6. Chain 2 (Bitcoin): anchored in block 957827 (2026-07-13T08:59:54Z), 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/SE5Q51800499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcd8ad97a082c6b1e87540e70d3e853797c469d64968c1aba0f0a011e91b6e8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE5Q51800892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67426c345acba0e539ea847f3dd636b51f5da24953b693cfe3a47d66051d1da9. 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/SE5Q51800893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801e253a2228ba11a6e79b09a2d812e9688228d255f374816a137e92ab95faa1. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/SE5Q51800987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e0509533324a283466bd98fb17b87a2c995459d5c173733ab87be55f628aa5. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/SE5Q51800989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6b857c5d6af5414ef16b7e407d976783210f136a1fd51d80710ec0bb9d644d. 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/SE5Q51800990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b48e5eb479a08fa2c1559559132f1285b2375d4b8d3b6f165587c3720a4eac. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:30:39Z), 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/SE5Q51823960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3512aa2713a1ee4f60bc1d23cdf26268f5718e9b40b0390c4dd6b9785127600. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE5Q51804523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5f2164c89e35c4781ade42fdfa10af5cba522a8275615b808aee865447767e. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/SE5Q51828801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc189dd73fdae9233a3d9be259b0b8239c0500d5a2f08c679228a6dce7c48a6a. 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/SE5Q51829037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa02369c5950a5ddccac101f7026dd600943113b787e7d024ecbb9ab74560a6d. 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/SE5Q51828927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42fdaa939417c4c73c8cee47be686a98b188070ad8b96659f37e9013070da4b. 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/SE5Q51900054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1440f721bad276e3d251ad680959acb94476db1663e43bc71892dee87524d1b0. 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/SE5Q51900096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa752546f716ad2ebdb92e0b629f759a5b8ece5f840c845746bdf81bfc4b6ab. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:53:23Z), 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/SE5Q51900941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef3d060b0ccb7979c4ce695a018390239b14d76e2381841ecd06abaa4ffcc7a. 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/SE5Q51900988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95f73413519af0c4475f6678fbb070a89a30fde74d61c5f8813a816a2aecaae. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:00:17Z), 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/SE5Q51901114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cad3cb262862095a51f92fde57e9b32df06076e6075a64c55c6c2fec5fd240c. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:02:33Z), 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/SE5Q51901115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b65d73dfad3c758172d8830a246aa45cd35032aeacd386b7c92c89079dfdf7. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/SE5Q52203884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd5ffb9c6b4224da165a60a40a84cbdf3d80f685c53278a6bc4b57944a61a25. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:32:53Z), 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/SE5Q52301482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942a715971abaa33f411dd8f7b830d9aace49a402968f8b3fcfca8f81baa3965. 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/SE5Q52301607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c811a68f743cd64d1962785127406d40ba1bf41b1f8a0c57668c496d4ffc5c. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/SE5Q52500820.