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 0x1c54bdd6242155065a51a1608babb4808acea97bd69c73ba7439883c59098a48. 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/d9c83827-d92d-4591-9a36-c333fa733337.json and https://artists.proofprofile.net/proofs/artist/d9c83827-d92d-4591-9a36-c333fa733337.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 0x1c389aee7a349931284f9ce06cdb969a2e9dac3a4a05127d55c1b0f9a5e6076f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:03:46Z), 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/USWU30900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1637d90b22f8c6a9a77972eaeb0872268a66a8200b76cbcf6a4cde49c329fcb9. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:33:48Z), 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/USWU30900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91910fc0389117c7bcc61520018b70fd55023b7b6cf6b141a5298d59e05f501b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:10:26Z), 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/USWU30900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fa747970e7be7614608dfa7275674693bcb13379d3ce926240356a0d51c852. 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/USWU30900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe895a0b5409191f889590e4965da8d854e6159c58ee2b3dfc385ec4262552f60. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:00:57Z), 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/USWU30900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7413a5cf02088c747d344c6b1e810ae38bfdb5a901a929f55aa5f33679aff71e. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/USWU30900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a48d053b775e38506906a58875d26336aa7181eb30e13875f629e70ced45530. 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/USWU30900044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0a2ee3576f6df2b7046952bad3cb2275672b1afd6c7af0f104f9d76c1aea7e. 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/USWU30900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a7646849b81b527fc0d50db465d6e8bbfcfc9f53963d42a16f3a179ea31d46. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:22:41Z), 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/USWU30900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fb9d523fd7da675447b668b7e966ea934236778700112b0c07b0064ac8f0cc. 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/USWU31100112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3564c2721cf3b706a0c088109a2248cad7acf4ea8d355c40b41f8adea05f522b. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:23:24Z), 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/USWU31100115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a8799df0ab605aee8c9110d4d4c56adbd4f13e3617a824e42b5f6efa268cd2. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/USWU31100116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d272c4d0dcc108d3d859d0a7ee9723e06149a86696c8f120e027ed631cdc6e5. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/USWU31100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adb040278ff4e06df60b26dfbb49c6cadbdeb8c895640937ea0911c4f94fd17. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/USWU31100118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf168aca8333fdab51ac875258dbe03982c91e8bc5530c4ec1ca2058efd939b0b. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USWU31100119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a82d36a9d182537dcb5e09ec4f7dc5256932dc068993c170397f96d06e0a73. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/USWU31100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21f8e89993083314e6d2a2d6de1927194fb5fa2e49a633d2fff2fe80b2e6450. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USWU31500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b22214ba08178580073a68f7b81684cc43a511165306d054126e11675ea2de. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USWU31500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d93c0a042f4129166b099bae50f279a7a4ca772df56440737d8e51d104e9a69. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USWU31500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b7ca492a121a6745c4590a7e1054f5df720d9fc55153aac550e5b1b159b1e2. 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/USWU31600366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee065476116460c392615c683464910c3a7847ddb4ade0f3dc0d7528678d97e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USWU31600368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd35233dcccc902fc4c3d8144afafe11c701d522807eebd8eb77559127cc6e18. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QT5M32570247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc011cedabaa2f1c0e3dd7697116e6337835b2fca3fe41291b8cacd2ea8560a3d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USWU30900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e2d02a47ff9107f6d6c44f61e737c5e23440f4dd3e25385a3872289dd270c9. 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/USAE81032683.