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 0x5e2f6cf84594fce08f38a1c10916f40eb1b3c6a8baf987e4c95705547dd72413. 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/da5f7a0d-1c6b-4e18-9e13-eb29d999d703.json and https://artists.proofprofile.net/proofs/artist/da5f7a0d-1c6b-4e18-9e13-eb29d999d703.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 0xeacea3b81c421c6dd0bd26f476f7a991bf70e69482281d500d1ba0c46f27b4e7. 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/QZDA82227685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f768feafb95da053445c538f67c936f714e2cef81f690b8054d54c9cdbc021. 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/QZTB32357274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7470f373a373eadafa9f9c20ea670505b65d86ff507ee61dbd95bbc2f8e117b0. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZWFH2355288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d64aa80bf3a84200a5fdb5a2ac09c2c1f826cddce0488eeaacfa55edf52c44d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZWFH2355289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f768feafb95da053445c538f67c936f714e2cef81f690b8054d54c9cdbc021. 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/QZTB32357274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a51e8d5638cb5f6f5f60f030059eeefabd16a216750ba5fcb2e12a90966a6f. 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/QZNWQ2364495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96158d0be702d609b645cc3fcb6408cb43dfd8cd4d1c9091ae8e5b90b6af181. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZHN82377591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008227b7842f2f8388f21b76e8374807fc8d9a2a233c232260fffa1b67fee8f8. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:03:34Z), 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/QZES62426736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfadd057e60d4fd07a0a9a9930796948be2d0c5880b65afa1c16559588558ac. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWQ2419015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59625ae31cfb0d39ebbd09749f72043984925259b6ca382d11ad525995846a2f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNWQ2419017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ad91fa0a429091d1b97e32da832e244c848ad5467ce0167b2e76f04cf6482a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWQ2419018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900acd95faa1fdb2f660c9247c5b7a026d60de08592135b6a32cb3d09b9e9aec. 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/QZWFH2355291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f768feafb95da053445c538f67c936f714e2cef81f690b8054d54c9cdbc021. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTB32357274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a26ecdbd9b0148711dc0e5dcc12a65302dfc4a64b943da9a494b06a80a6715. 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/QZFZ32448617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0a22fcd3724c8c6f1a0ea04dcc3e4a5b5efec390770c9af570b00df3a86570. 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/QZNWQ2364494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d4e89c914f75ce9b83267f61e336941bc79029c9e0527bea46268328b6f0e3. 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/QZNWQ2364496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe623a3deb795699c3e55a4a555d490c196f960dd1edb52c38fd1635d5f9844ea. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHN82377593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd940a932820bea0b4b08061e1b628c90ff0fe6ebf8fd1f0fc883a80f972c3ee. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZZ762471985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80220ce68ca6d4e31b473bd0e897db06bd4c31459c6db4888f8a87b7d133705c. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZZ7X2434476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc8f9d151a9e4719c191764e67d3b4a62d3647d33a001ecc1420ac121508ebb. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZDA42559272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d82a4114d53274902105c2f9df1da5f7f8627d3d4fcb78e90ef0f3b699e914. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN92564683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f58647bb4e0f7ce78324af1e1d056e72ddfcf97efea117d0a45c6e7ea24514. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:47:03Z), 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/QZHN92564684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a03038e644d84bd4075e5b363313ba8f67a6b61ddd0b6891fb0b6d892eb74a1. 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/QZHN92564686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee33ffad01b666568f445c2738041e53fc78c4fc0a0bf0e7acad3a450e5659f. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZHN92564687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80220ce68ca6d4e31b473bd0e897db06bd4c31459c6db4888f8a87b7d133705c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZZ7X2434476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5643616e43c7ad1c1e71d377150adaea14f5e782a85f31760b4a9b24a8b4dea3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:02:01Z), 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/QZHN92564688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb720bbefe9e975806b135a33b8f62efe0d55072fdbf811cd28e3ed930d0b1103. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHN92564689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6b028c8d289fe7674c4dded35514f2adafeffbffb234e10d495da1ec2da9e4. 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/QZHN92564690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc8f9d151a9e4719c191764e67d3b4a62d3647d33a001ecc1420ac121508ebb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZDA42559272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4978df783f74476cf9352b3c6a322c42c78ae030648f10c4c1e57e548734ab. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZHN92564691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d119d5444a9ffb97623d453efaa2c9865ebc9716b36e1bee08ab1ee9b379d6. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:52:50Z), 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/QZTB92525262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3a42238a01fd24c67bae561c7623bea9f04c4c888a02b8f69276f78c952cd1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:44:39Z), 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/QZTB92525263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34b54114d8aed0fbafbfd7902d650d850c8a26fd7737807a1d8e868a624987d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTB92525264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ab6e3c69da06b596ea6439b3ac81b35ece9952c0906451faaf5c25348ccf54. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTB92525266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d7cacd69d8655e3ab4e90413a6185202173286e2ccc852e0ee8e395c2df177. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T05:35:30Z), 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/QZNWQ2419016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c1883857ba543411a2fa9ff76eb1578b9c7307cf8cd91ab0d9860d95c90e2d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:59:58Z), 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/QT6E82566473.