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 0xef21abbf5a2ca26960048347e62814a9cfacb7ea5a01c2b3a6c1660c18e588af. 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/208e983a-82fa-4ce4-bf4d-036133eacc69.json and https://artists.proofprofile.net/proofs/artist/208e983a-82fa-4ce4-bf4d-036133eacc69.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 0xebfd827b60b265f80ec2fb30bcd220268eb75404ff725dc6e1129f7d66cd04e8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/BGA471518060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3babcc230ebc5629a6e296c17ed61076100ac55da19ece3143c3948358d9cd. 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/BGA471407531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166bf5b3978c29a0f898cf9941a5598d310bfb3a0aa96869a22c535622a7210b. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/BGA471407533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a077d101d944c665b904a11cd393f4a3e4526ef14acf6138aefc74f2c3c3b3. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/BGA471407535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62be36d9172f1dac238fc409154a42f0fd8dca96ea35250ed5e64dafec638198. 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/BGA472102499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44394e47857c87d42a83e2738698753df4027c3929d0b6191dde30a08e0375fb. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BGA472105771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd86c19a8ce4a2378b2f5335b32b1fe628ce7cc7c8f59f6259885b9c137756a. 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/BGA472105769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965eba3baf0f6baac6c29162e168e36fbaffab9a5957b4d2648f0f87081568c9. 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/BGA472233706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd2d0a2def9f10570e3d8a52523ef8067b5e89c066a47bb77f64bb1575fdaff. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BGA472233707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27fe8bc6009c9605228730d73a44dc7866e0599ed1d184834b4878e0d95699f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:38:03Z), 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/BGA472233710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a66c4b5f8f8dcb9a1a1bfcc0ca6fa08664bdd559f83a929bd9ee7b84cc1996. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BGA472233711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6577c0d53b2791fe4b9ff95e1f893c36ee15aed157976fc62d1bb1ca448751. 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/BGA472407369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ada166ede644c3f302d783d92cdcd59470f43f725a5e1e5929e083aad8124a5. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/BGA472407371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4178de27bba292806d6fcd88d73bd6eef1f322b0e68c3207588957545a7e86. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:33:57Z), 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/BGA472407372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ff08ab6bdb9b8bde086dcc2d1a3514756e49ce67c68afae9549e51e0dde352. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BGA472407373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8b8f9ee76db027c46ee8299999472c3bdd3e552ac24505cbb449daf94fc252. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BGA472407374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838596a529f8426e97f67ba3140336b57b24a9e8e071e2e95de724a8364ea6de. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BGA472407376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e40df6acfa2fa1b418b1f04aafbcabf48aaf98ebd1b93535bd210ecd97fe21. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/BGA472407377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89015ad37ffd02784c248e74183be07d7b1778a9a1853bf88c510cce971ee526. 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/BGA472407378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86db6b425c770d5bd4d70d971b497866f03c86df3105715aa41e32e874537c52. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/BGA472407379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634e284573d548a3db5a8572d68034eaa91d7022c6a96947f7d7e0c15b055b8e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:27:41Z), 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/BGA472407381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc149398f5fe6e5fee6c2c99a80b95f7ae9e55cd3cfaa76ca2c8c5fcb30bbcdd2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:21:36Z), 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/BGA472407382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3c5f8c684c7a71267e3093d59e5efc3be73d50a702c48d339f664851e72697. 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/BGA472407385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac5556126d0568a2200034433480c1139fa4a60a133516bb6f8f11fc635d0da. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:03:28Z), 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/BGA472407388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd26f4a39a8b4c7c2f3f1fc30a9ca120e5609559287f9e170489c4214db47ad. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BGA472436286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5ebfd0e6dd00f7daf5d6c59b57393c8f55626a45270d56ac76c709e2fd280c. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:27:30Z), 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/BGA472509123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76777fc5f238bb368fcd0eb516984da74a8ca5fa0d4287a7205fe39bd9e7c7a4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BGA472509122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e4e15e26762eba49c02174e42e6a2c2939c33f7ead1e15ec0389fab5e39641. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BGA472509124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a2e39cab491f7dafb928e16f80fe823d939dc9e697bc3a04b66df1cee7e2a6. 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/BGA472509127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba31129007088d1fcbde78a37a89104fe35405674aaacc35e817687cdf5262ac. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:48Z), 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/BGA472509128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde33c4e2be9487eae60139161ebac3b295bb5bd56a45f9c8d8c63c212de24af8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BGA472509129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0fcfae3dc0e026cd627554fbdce0c8e646e55a09d4bcdfee9f17cfcc7a66f7. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:26:34Z), 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/BGA472509130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e83bf07b2313453e3b7294dae2630a66bc288168aaa19d21bca68a8a05f5ee. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BGA472509135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40438e4b6ed4ecdb0c584489f55f0990ac94315342f2f9328a9ce075378620be. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:37:29Z), 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/BGA472509136.