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 0x9d234533dd1d009ef24b8e4bcdfb7700690e34844ad448d227ca73b9f5c113d2. 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/9569e2f2-95b7-4e05-833e-ce856f852eb6.json and https://artists.proofprofile.net/proofs/artist/9569e2f2-95b7-4e05-833e-ce856f852eb6.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 0x5b6c4c9a1df885486d6358301fb9f3437c4ffc68e194ddd56af240da468caf15. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:45:39Z), 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/TCAGO2249410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988bf97c138b90e0463b0ca9dfa6ec10b86f8e37ad496e3a73163c33c9fe4f9b. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:24:04Z), 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/TCAGL2298627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efcd896354414dc9633bbc347eb85488717f1a6bf522e53006efa95d1ec3171. 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/TCAGL2298632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057495c49dd8692ba6fd7a03c5ac91ed44a9ed417eb61c17a8aa4179a6b110a7. 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/TCAGL2298633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc16bd9103242714ea4797c5696ea12514bbedde81283147017dc0280d2cb657. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:21:42Z), 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/TCAGL2298635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7429fa35ec0c7491e90aa6698a96549f10db5ddbeefccdb36768ee775b9fab59. 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/TCAGL2298639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dff0b5e60c128e8062b71dbc5b365352dbdf0ede6050a16880c210b886d592. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:32:37Z), 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/TCAGL2298640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f88d46af3a31b0e1be9a7b41e634b682cd4eae70e617b3114241c191ba3549c. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCAGL2298644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c137156e8c75e633fe5c7d372cf6d52ea3fd7c885e3413a8f0ffd401611f1f. 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/TCAGL2298646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d697152c9ef3260e4cab69e17a1125211f608382d927a409c410d5521309503. 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/TCAGL2298648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5a3f6aa0fed9a4a1dfe9f6a02b9112d2f088e16095585d54f99614e9bde946. 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/TCAGL2298724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8ce5ef9d41b2dca1cae09c475123f252231266ba7b9d14af9532ee37e1d6e3. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:11:01Z), 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/TCAGL2298725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bafbf31041fc4bbbaf7576a53871618730f428a1ebb4c5fd5facc1aba5a0de6. 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/TCAGL2298727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5fd7b936cf76b30f4cd7ee0b3c2e122e5f05a23633ecf6296358e8dc7af64c. 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/TCAGL2298729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14263ba3ffcf5ae5902c3c4f1deb8275a0b7c185a998a4637f2b7f2c0672e579. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:56:12Z), 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/TCAGL2298730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d26a3fcc2ddb5a6615e0f5d6e98af090f72eabd03768a15b595bbc259fe1b1d. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:40:33Z), 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/TCAGL2298734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89369d2ddc572450f34697702a00d4bb7cb72281b141c247c04e5d91bed556ee. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:38:51Z), 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/TCAGL2298736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03531de5ba4248e20e5e96d94ce11ddb6dbbcf753d8c13b80d8c80e3f64d2cb. 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/TCAGL2298737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a86a73ecd3682aefefe629f05cc30cb03b59e5c9063312f2e19efa6ae29e103. 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/TCAGL2298738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dbaf15fda6b2b4c76994cddb005a03a1621e52b85f4517769d755bef7340bf. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:01:57Z), 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/TCAGL2298741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41946b57bb70a7e85d84f8901dbb77fee4c4bb39a2621a73bd09bce413725c7e. 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/TCAGL2298742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba28fe4f783ab8f6b5b58f20ea2a887a0cf207c534acaddef05ec10c391de3e9. 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/TCAGL2298745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1c0b1eb6b8296ff494fba24de66333e3d1d2c9debc96cd8225ff0e36cc51a3. 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/TCAGL2298749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09b64166511fe1ae110320efbbeb245452db5a7d374a6db35a114a2e8d3c318. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCAGL2298750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8fad446e45a25bcd917e4ca7afcd8e499381a2df17404ef787e5d674584e14. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:02:29Z), 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/TCAGL2298753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fdfe65d3df0e4191d8206e2bc1dfc1d0d85ccacbc829791b5886ede62b4f95. 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/TCAGL2298754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255ea7ac9406de0ec034b99f98f4aae77a070f578a64cadba46ee248a627dc2f. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:59:36Z), 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/TCAGL2298756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a447cf37e7e5d5ca0909c20ca134198f660670960e8373b96cd3fe25e6a2e20. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:45:49Z), 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/NL8RL2554565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef491d62010f9a85f80a3ad3e86339b1f4a02d57a15319014a442f96e2c6de0e. 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/NL8RL2554566.