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 0xa1e6b6809635ee2401c426927a1fe142c301d831349ad3e9009be4813abe92ca. 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/49dc7619-5526-4c17-b214-773d96b8337d.json and https://artists.proofprofile.net/proofs/artist/49dc7619-5526-4c17-b214-773d96b8337d.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 0x5dbbd9058452a3b48f62adaa204dfbb65cfbbfd8903056489f34937474ef1052. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USRC11901016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc250231629bd420661a4e23bd3bffcd8db29ab01cfb4954bd6c753d66c8800fc. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/USRC11901516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7b1f5c70fc5d6a497592f5db2d485e8211192fe304f022fac4c53ca835d541. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:59:28Z), 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/USRC11901545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a1c3eca45c5ed73ead0556dfaa9793d3fc51c2643f2cb30575f09d8539a932. 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/USRC11902575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4688d57911f133b7d7b54d46d8df760b5a29ce5a5f1f31d25e02a7cfc87de7b1. 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/USRC12001606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9abf0e147d773e17b699813b7b3799a86b84dc7e7f4d3bb2d5e40a43bd3e8fc. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USRC12002083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a1c3eca45c5ed73ead0556dfaa9793d3fc51c2643f2cb30575f09d8539a932. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USRC11902575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a189e7826e3b7ca3a55444b45913a7fc5b930682509dceb0d275da5f7edfee5. 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/USRC12001897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d6b96a07bab29e8c34dec206bff4d1fdfeeb2371b465432fae912c9e258705. 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/USRC12001899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5749b679b6fc078fb578051a11f4ec452a1689ba0d8fa5f2d9e5a11c4309a676. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USRC12001901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4688d57911f133b7d7b54d46d8df760b5a29ce5a5f1f31d25e02a7cfc87de7b1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USRC12001606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4b372345ac16d51b0cf349a7a70c1827b9db901a324c6066809847618325bc. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USRC11903900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc250231629bd420661a4e23bd3bffcd8db29ab01cfb4954bd6c753d66c8800fc. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USRC11901516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38105f6fc634982a6cf5a5968e887f2b40eb02411095a467547068a9850e9f40. 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/USRC12001902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177859e354025ad1655ab90f0cddf46ae380b37282081567d72271cee130a21a. 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/USRC11903899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc650c25e140e30fde20868ebff7f2c82490d0e624bb1a53c47ac813cfc881077. 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/USRC12001903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517d643d23921c0de54eeca95bc78127ec1d65e2bb5d5db74c1fd53379de6457. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:53:07Z), 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/TCAHC2391771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde91ee62caad5003a542328d12fd5ba7519d44d29c4370df7763bd5abe1cb3bc. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:26Z), 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/TCAHE2361287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32166388aa2a3a2e877c6673f3e8052369df49cf2821ef29081c68d1cd5be0f4. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/UKZGC2405336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604275e6d1f5403af739b503a22bb103802052a8dcf9e6ff27312b60ac705b97. 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/UKZGC2405720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af6406311988280d4ffb2023d4193426ba3abb7b0a01a04340cfd6137e743b7. 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/TCAIO2481269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029f08cec3a899073ce833bce51f98628ab7bb09709dc105faf0f741ed7ddf83. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCAIN2481295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6f45a09fd94c81c948d58cf141e57af7d5974f9d9d27dde4f774f40549d651. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAIN2481308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9504806eccd716c7b2165d1d7088185ba050db94139615a2a1f9d6796565c7. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/TCAIN2481319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5979735373c6244e2552336a9ec2a8128e330f783f1196889fe7a2b449e95fbc. 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/QZ2571600010.