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 0x41fcb9f6b65e0634857d247f30dfabcd4937ddfb25ab8eef2feefad80bf5a1da. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28993499-da15-4277-8cbf-e389ee167785.json and https://artists.proofprofile.net/proofs/artist/28993499-da15-4277-8cbf-e389ee167785.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 0x07e52b2abb356e8aabc2fb2ce65787c44953563fa2c4f82fe8176f88ad458e32. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/TCAIQ2402951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ac95b4c831a2d01a2bb0eb534a576145e8e0976328ecc5c2cd2fb5dc8765bd. 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/TCAIQ2402989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5b1f94c9b9e71b4ed7578655eb685c84a908a861e0a17a627dd361ef148c66. 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/TCAIQ2402991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb2d1ccaa43ed662c52c8010a7c51e93def81652c2d3a0f8b2e7599104c3401. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:58:44Z), 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/TCAIQ2403005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81161b7098cdc65a6f688451dc96c2c68ab579235d5a1291ad4417c508226244. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TCAIQ2403010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f25a6d54589aa09b6f87fa48691b9ca369705bbf24fa542c92707f8b8bf5b1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAIQ2403017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e122b72eca75d9fe197bf6051856c02004ba9840db162450624c71cb3cdb0f1. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAIR2403029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d4ac941b52a880dd7ddffdcb9c20fb2f53812a9e85d37bb66f99085ab4d70f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAIQ2403037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6c137b45460e297f6897a44f4406714f8a02ca1a8e91fdd3e7f970fe62d688. 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/QZES52506138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebe8432dfaf485dc98bab58b9fbfc1a0217000a0729e9bc6a50a0d065c8fcce. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZES52506139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e18a8f34a0df5f4e6159aeae9a39fafba69c7fc9b7b4d50e880d99b29e3f043. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES52506141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e55553858c9508cb6a2cd3f88dfd746ad90aa94898d630df65f36f7ea55131b. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES52506142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53d59b86f228b717dd342fe19a873f0e9261e88de959ac11a1dea62638ef5bb. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZES52506143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cf734cbc19d7b751dd24be602975f82130d112630f288a16d8dbf9b457fe71. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZES52506144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd9caed7bbd86b66ca9e658a0de06f1746826b0e3e5819277620be388442f19. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES52506145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bed7d693cdeb6b2592d35d7ac57d854ead673d170e4a8e7d8d15583a12a426b. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES52506146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57714d8496328f79390e6f92d6c3a46dce6c83a2692dd43ca7b8b0cd59965fe4. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES52506147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511922de39ca7c9922671e09c45f51f726bca8437199b873a63c3c01f8534367. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZES52506148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0651cc8ca1625805822f6d8428221baf20a842077265eb98b6f76c81a284e8. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZES52506149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a9847dbef82c37cabcd6d85f2ec381ead5f58b8c9449c1d4863b3faaca13bb. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJK2552090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060ff442e3326cc75769ee58e570758a57b54e5b9478691f0f20be18b9cbf039. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAJL2552095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6275f49d56d0302258e2fa41c66a3a8374abc24a3bc4afa2b337057a2ee04e3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAJK2552099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabaea318391f3ce1ec4fa1a011a474efb98ff8d9c1f5a6ab28200946e77ec1fd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJK2552101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe038dfd1a3f59f144e3d4f2936d79f3dc15cfb63dbd58e1c72be47a9b624f92b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAJK2552103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8548675f58d9a604fd99364b5039e1fa77232db3b6f5bb30dd0f1cf17504aff3. 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/TCAJK2552106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c5cb93351a775b2b4a1fa0d8c8c658aa807c1d2b7bafc2f4a9429631f5d883. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCAJK2552108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42e89ab7e4544d7c777f959ebc46340cc52f1c747e5433987702ec9406013df. 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/TCAJK2552111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce9d08bd690b6bea933078d5d14db496dbeba6ad495e42f148b8760ee111f32. 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/TCAJK2552113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e6689de65fd4a612f23146b56c074190f4ecfbaf6b32f82cd6f66bb84d98b4. 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/TCAJK2552119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbe016674914bf09e88b0c1870e8cc05e3d13285d434aab00ad9f078b874aa1. 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/TCAJK2552120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6880607df1f628f9624d8efb104044cde74da28c20fca846288a97212157b8. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAJK2552123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97865494e210dff28b03bc18f76aff21d9bf0a415a8b75a5cd99c83f87be7ac8. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/TCAJK2552127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc21ea4a4b74263f4da59e6456e4f0c25cb1473b15ed56c35ade7f6eb86e7a8. 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/TCAJK2552130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b84c9c5c9933c2b6c0a3b0a9e978209c8873cb7fff39c5cbcb10522278e8319. 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/TCAJL2552134.