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 0x2bca1726381469946981cf86facc20701bd25e71eda7392edebb0ae8b6922725. 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/d64931d1-8b0d-48c0-9e67-b55463d076d5.json and https://artists.proofprofile.net/proofs/artist/d64931d1-8b0d-48c0-9e67-b55463d076d5.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 0x466f54c3f45fd4f1a6aba2e1bf09cbfd7a365d76bb2e5758a96ba3362c1ab71b. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:24:38Z), 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/FR6V81914000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b3af54e57fbaa04a96b02f73f1f351fbde18f0f68555336f10df15f556ae78. 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/FR2X41442090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbef85d910ff71a8e3b1ee064d1e4b97706a86406cd5f8a8cf80fc2418576c4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR2X41442091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d3138d94788dae27e599046ca8047d15d723d650481b8dae68664fc5727890. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:07:13Z), 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/USLZJ1523207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5fe2f19411576645c72a22ceb2216f484e309968da242eb9bc3078d833f6cc. 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/QMD7U1500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700f67f71c08e278ef1dc05e61bb009e31da497293cff432a74fe5671a12b5b8. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QMD7U1500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a4b9a24c5d60241aa5efeaba81520d7eec33e9ff427f99b74f0fcb3a750ec1. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GB2LD0902303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd661f972cfcf9e4d40f46135f6e66ec25498f2d46d62a4d99c301187af8512ed. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CA5KR1539791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e2a71c5e3f37c3f2d6b3158dceff70527f2137e5f81686179b7697fe5e4fb0. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:47:36Z), 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/QMD7U1802001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd520df7aac9f7116e7a7b9dbd2b90fe5237bda436bfb76478d15e13d52787db4. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QMD7U1600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa5fbed5698d14823e11e6be3c288a92760163da614ad0a68e9d16563785fe3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR4GL1110738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a176607ef0a37c52ec0c965226002124b5a8ff86d1916028d66cdbd5c300284. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/FR4GL1084387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adc9145dae9ac10023d4c492f172be562dd97b8370fa5298678cee351e47eef. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMD7U1600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700f67f71c08e278ef1dc05e61bb009e31da497293cff432a74fe5671a12b5b8. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:06:51Z), 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/QMD7U1500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d0efca3d56c2702563818c21bc235ad0ddf2da34d2b4efe03345d48b9ed020. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:48:18Z), 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/USYBL1801345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30887d7581195c2a1d6f00b72e15ff043ebe564a9a095f7d9cd3cefddd37377d. 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/QMD7U2002019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5caca9d385770e1d4c535f95ceceac138903430b16e71ed79ff949479e04bdc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMD7U2003006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20e959cefebd8d1980273b29e8feb6b05c1fa128f7933fd77e542442c2e535f. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QMD7U2102036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fbb2b49f51c0011fb32624033cc8628a2bc7ebcc5f28a1d2cf7c2e1b9b081f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMD7U2103009.