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 0xa0c8982bdf977b4c1e753182ab6af189304d5d1761ca7ffd4ebf166c4cb8fe4e. 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/14e6375f-ede6-4e98-a4f0-d461ed009b7f.json and https://artists.proofprofile.net/proofs/artist/14e6375f-ede6-4e98-a4f0-d461ed009b7f.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 0xdd41d40db0eefdffe5d55a0730873c56d0a396c4fd5a0fea78364970c53c6632. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZDA42404938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06fe99952346f4fe35f8a2fac647faecf3ebaf3cac3b39fa2fd03346d99d0ba. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZDA42404940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8862f4237bcc1803abc38a7351f807cb4b871b82d14ef14d3b7ddedf0f45d730. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZDA42404941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4241e2194308c6ac090553f81f5831621884dab4d23c09d90298d9921d368ea. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZDA42404942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fea780a23e5dc74c0fbdaad45f96c36a339a12a1ac61853be32aa499faee035. Chain 2 (Bitcoin): anchored in block 956809 (2026-07-05T17:21:05Z), 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/QZDA42404943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e914ca8abedd1991af495af653b750a926e7d5d0e0a1d1f1263358b87fdd5c. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZDA42404946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a29556817bcfe119eaaf26738e7c1f44a5ab9d0bf01562dd4613d4475e4b06. 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/QZDA42405145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefd9495f5d2a295135f4ad0a80e58977a6ee21b50588ab34cb22b6e2cd3a725. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/QZDA42405152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ed556bdb232fb79beeb3b517e7f63ae8c4b69d801ef38098643e376c23b948. 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/QZDA42405156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4358b615c17b860bbf1e71d64cfd4f1ecb8439b4073cfd1bc1a0414650e1ea28. 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/QZMEP2394189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8857c1a0a7cc6ce5f16767cf56db560df7ba25c9a40ca6331341bd398bc6de64. 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/QZTB72375367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad122e40175ca192fe6d8c05f600c9c6103d5a1aa6486c3862f71d711aaeaa6. 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/QZTBF2377239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffded20ade7a3e31da48036357e9910f71260609642bf8d42013f98390191c4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:33:13Z), 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/QZDA42401850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598fd9e154775bc61c16e2f7d1d5bfd093012d4533dea212bd0b613d4019638e. 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/QZDA42401851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1648e3d8b4d57258eef29d78b9ded699cffed5c964affbf9c48a8a9518ed9b. 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/QZHN92471005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8dea399b39c74283980e77d33773c7a6cd6be9da280467501a00ef9799d65b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:28:03Z), 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/QZRP42334029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006a980b4b25c16393714ddc44e375ea4659598084668e1c7a4fb86ec131a1ee. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:30:48Z), 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/QZHN92471008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a41689a88c96dd3d25f16abec0d83a93c097986e8c357e381c91d0e0c67dc4. 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/QZHN92471009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0990b49a16a1f332b46d766ac74e5e7b2657397f09f162feb180812a3a4da7ed. 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/QZHN92471011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc19c08c9e9c2514c6980253be5e83cf6f91fe107be42352e8817582ae3d8f0. 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/QZTAZ2492147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d539ea62a30d81cd683f4fe9ca9795f06462a26609fc870a8d654cd4492e14. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZTAZ2492148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a8df77fb086be63e8ddc43bafcc4b01cb7953faf041e0b0a8ee50815b6f6ec. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZTAZ2492149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28517881be868729754178ffda4f7484274a007f7719b83d05cdbb26c152274. 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/QZTAZ2492150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a6e040ada7ba8b6155ab722238de9068a253cc91da1c657b59eb9044dd5a1b. 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/QZTBF2476168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9281373e9a10a169b643c25b14362e2d2f283f76b4922720050132fc35eda552. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZWFN2426117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b60168f5cc5200b43cc08361fcc747179d306569e98a8850690462a50cfa3d. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:23:34Z), 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/QZFZ72556732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f31d7debe1d6343b5c21f13d4bb2e074c6fb8d14ec69b502ba2984c80253fa. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZK6H2599567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03640ff50d10abe0b9c9fedcc902ddcdf64c4d364683f93ff600444d2a7f682e. 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/QZK6H2599570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd490139bb24ac6f97b19706ead8735dc4f9238b45aea487e5b0927bed0f52b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:00:16Z), 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/QZNWW2578960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28437104fd2c0f12357106b684506a7ca8ea33a3bd42e1f9cf61fad087d7e03b. 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/QT3FF2519133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f527c745d36e70c298912e4f5b6441c8c95e61271e5ae6f5e7bdeeeeeb80b8d. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:33:53Z), 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/QT3FF2519135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe514720c801aeedabe759a3af0c0f54df01014f9f98f282089f268f0660591f9. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:42:35Z), 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/QT3FF2519136.