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 0x4102e781e7e362f3d6a1b340a88c59252a335b57bab91779aef29864de8c2e9c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3e04035-a9db-46b8-88ea-2d259014a111.json and https://artists.proofprofile.net/proofs/artist/a3e04035-a9db-46b8-88ea-2d259014a111.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 0x3aacee83d3bc067afbf7833dca81fe98b1f25e6920cef2263c056115d6629d45. 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/QZMEM2048120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d1a81f1a1b3883d3359a2236af794473277142ab77ef5d29501a9d45fcaae9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWV2093650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9116259dc366a77f16410cd87851a38e6aecfde184bed9fab68cbb420018e7c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:36:34Z), 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/QM4TW2236953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272d7cca949bf3025d24cfdeab977c396a0b60dfc1e7c33c21dfabf8c9118e3b. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:03:38Z), 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/QM4TW2236954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fcebdbb387aaf19db0812dee993b05f2a2d100ebf3e1c6ba375f0eca124d87. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QM4TW2236958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea32636055c8c45a9b1e3d3b84b4bb1126a8480f12116490cad9fc2763a849e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QMDA62231608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ee256c02e472b44120e5bf4b3b196d8dfecead97f4e1aa6af1037e81cbd326. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QMDA62231609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2208b3dc5dc6b5279265f04a22b27840eea4f2344d839d0eb006d5f5cec82563. 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/QMDA62231610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d87a75e3cfad9c516e746c4b18bd51879367b2766589b07693dfecadeb0131. 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/QMDA62231612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4cd4de42c6c2667b5d671e1e32d37f105fd92fea17e4f011ad921b49de3980. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:28:12Z), 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/QMDA62231614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78e6007e065c447b5502790ce586bc9dda09713ba1d7fee727617950a2ee46a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QMDA62231615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8476adf12f70e674a2e2b7f51f3c86844fc97b2b187b033cd2e5a0314334c4. 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/QMDA62231616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14dc86156093fcc8b8b6966ebc08e9ea025951a39e849ba8f0797cb1ca448c8. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:52:48Z), 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/US38Y2345501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f7914c50fa30f6afa0cbeba1bbab726eee91d7471e3a24992dc1ae62a0ec6d. 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/US38Y2345505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb07266641a04cce392db679f55267bfdf1f9741c2251a207cdc7120aa67f94. 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/US38Y2345506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe046428e3053a4430190750e7a4b95f29dd176f3e4d8f272e3f1bb084ef13967. 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/US38Y2345507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305925b019d2d15dcfee23e06f114d456fdb3008cb25696c7c7b225aa6750c82. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:35Z), 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/US38Y2345508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f7eae64c7d670a3f771f6a7dd7a532bd153ffd191e2243193fcec8f8c8b839. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:22Z), 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/US38Y2345509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e7b4bcbce2dd61e7f44f62235c89b18af96bf2c6ee994a0ce232342b45eb48. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:35:33Z), 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/US38Y2345510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5218f6ddb5c346913a66bd79e41034c471204ebbf7e0e566e3d16ac301845e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:05:53Z), 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/US38Y2345512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7bede271706ca03cd4ccb8b0ae95d8e2d6e5e2519cce5e90e06c53df26f3d0. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/US38Y2345514.