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 0xcc09b1611a934c1051c544019ee898016dd069c327efac599ed50317f46fb535. 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/57137102-b396-40b4-9bd5-e32d7297520a.json and https://artists.proofprofile.net/proofs/artist/57137102-b396-40b4-9bd5-e32d7297520a.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 0xd8e6b3a3845c193978a551524c60cf2ebf7d9b7a3c11004528361b64f0f1dc41. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:40:04Z), 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/QM6DC1745506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94df54510315d4d3a1d23441e1a3d75b3f2c4d15594f55ce7c2af80921b219ce. 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/QM6DC1745508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a875e3c08bd8bb4a9a9ee41181204cadec78e1556009bdba111bbad7ea3ca0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM6DC1745509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886937de0e66c28a909a32af766d19676a1f3fef1b321af6637a0b19b7a68b17. 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/QM6DC1745510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fc0fe6a142ade462f41f58011e46d6d8cc93307ce766dc4f4857645bde267a. 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/QM6DC1745512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc7276f699d4427b4435c13c6d636ce3419cfef5f533df1e035da1a7e5b1907. 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/QM6DC1745517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4a1107cca5fd9e6ddfe0572d0415f7d2e0a1c8b60dd92689ff58d513b4215c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QM6DC1745519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e6b3a3845c193978a551524c60cf2ebf7d9b7a3c11004528361b64f0f1dc41. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:03Z), 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/QM6DC1745506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf91553a92b8b37a6e92c702b83e1131f10ccda648fa194c7926212a28aca6c. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QM6DC1745507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94df54510315d4d3a1d23441e1a3d75b3f2c4d15594f55ce7c2af80921b219ce. 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/QM6DC1745508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a875e3c08bd8bb4a9a9ee41181204cadec78e1556009bdba111bbad7ea3ca0. 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/QM6DC1745509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886937de0e66c28a909a32af766d19676a1f3fef1b321af6637a0b19b7a68b17. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6DC1745510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fc0fe6a142ade462f41f58011e46d6d8cc93307ce766dc4f4857645bde267a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM6DC1745512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8b9640fd8c34b59533e6cc084981d0bd6f4b0f15c7e5040bda94c9c464fbda. 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/QM6DC1745513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc7276f699d4427b4435c13c6d636ce3419cfef5f533df1e035da1a7e5b1907. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM6DC1745517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d633293de9186682e49563ef692ee5c18916f5c5abbbc709a725c4a4353a662. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6DC1745518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4a1107cca5fd9e6ddfe0572d0415f7d2e0a1c8b60dd92689ff58d513b4215c. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/QM6DC1745519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8a3098e055600fba39dac9b01fb080ea546f7f22520bf2194baa389b68e908. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM6DC1745520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ef99d189668cdaba44fe0cc0d90a994224d13caed0735b113fe240fa664c7d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM6DC1746417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0800f30263c3a4efd59f3720f15c29414952042aa2ae19064d6146e3f61208. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM6DC1746454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004ec865a786c2b39193b4436b3cb7d49edfd39a4445d378532bda8eaab17efb. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/QM6DC1746455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4ff1964c3503e2f820f81513053d8f1027ab3d33e980e1a1e5cf906c28897c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:26:52Z), 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/QM6DC1746212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5281418d2980b69a96daf89f0b6134d5b56f6c2a6ee7cfded9bbba35d2fc5f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM6DC1746213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f86652599528e045d4739d0dae99323f4928e409716d6de165b69c71e0299cc. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QM6DC1746214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd4920d4702f525f3a8bdbbff7984901e53d9e4cdefc73cd546b6436f285f51. 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/QM6DC2096595.