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 0x6200f43fd59bcef1757225638af4e28e8d1bbc84dfd312416635c77e05c70510. 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/285dc0d5-a153-45c4-af08-2b6202f4d662.json and https://artists.proofprofile.net/proofs/artist/285dc0d5-a153-45c4-af08-2b6202f4d662.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 0x4ece514b03287ebf44f2ea6345a662137503d6fa9dbd48e33a1592551e7c963b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SKE011305103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab4a7543ace43b2692914458f7e15075570ee7198ee02b77d1a2726a5965303. 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/SKE011305110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7d28024476a1836193a1f5c8d9924574c141f370501ce1c3ddfa03bb2c0536. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/SKE011406602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbca19bfad992fb6b483dccae06501437c4192e097f957a66ec2127c8fdfcb35. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/SKE011406604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd469c384307c3ed214ce8e2ffeab52bd06424aa40db69ca01a39c2cc3c7964db. 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/SKE011406603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c00a4c41fe9e7159d8dd959c0cf8c9eac113b212bbfb44556fffae215de9d5. 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/SKE011406609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280947b504b2fc6b548a10b4dbd8edc5ec7f9ae2e089e7d9ed043067bcc3621f. 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/SKK291500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cd723560b55f73683e0166053796263fe72cf571892974023c2a309a51f98f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SKK291500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385f3cb535ee34594dc297688a5fa2365ee047ea20f5e59b6f84ffc2e746082e. 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/SKK291500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fa8e2762e2d3b51235667785e95403b59ba42d4c64b8e8196743a4d5233852. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/SKK291700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd230f65310360535f37477f1e85aa34f3372302294979a6d8812cb2b5f18f0b. 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/SKK291700108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98b5e7d05be7b49d68123fe830bb0503bb05fbab0dc7d51550b25772668ae7e. 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/SKK291700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fae5d7852458cf70da1758a1f58f13e4a597cf19b66cfb6de6c4c9fa3c1f5d. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/SKK291700110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2331ee33a9bea527fddba4f046e0c7ede3ea138f1df6d42fcca791d77a52e7c. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/SKK291900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd49f7ba254bc95519c80e03b7fd7a1f72f0232b746eb2ffbff1d0c9cb56ee47. 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/SKK291900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b13fd89a880a3bea4a9d41eb00618f25bab890ab66e3e49932bd382bf8fb6fb. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/SKK291900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d6a1f0cdc2dc5d7b04b361f9f198d074a9f1d04ffa57b46d999fdd67468bf7. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SKK292200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffec136ecc534c81bed186efda85e01c96de6da5a3d3fbc2dcf7e9521f04ea93. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/SKK292200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afe362b0257eeee57310aabc923837910575a81f658ec9ec440b12ca698c916. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SKK292200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa764594e4c5ec3825b4324bf36b1083d765d298e2a62b78d9822947901efc99f. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/SKK291900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98738b6e700ab49aee26d0c4a0ac6135cca286690e6a12a26ed1385b78a70082. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/SKK292000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280947b504b2fc6b548a10b4dbd8edc5ec7f9ae2e089e7d9ed043067bcc3621f. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:03:16Z), 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/SKK291500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98c79868fa57b21eba714c5192e13031feaca374d2c447a07dd8ded3bb86c54. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:46:09Z), 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/SKK292000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6935cb79535d9e269615e3d16e4039bc779c0d61907f6d75c3e8fded5560ccc6. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:54:48Z), 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/SKK292000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2722318b4d83611799b3ae644074da9a06ca5148039854c7608b1033cadc6ea6. 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/SKK292400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76be2188fdb57ff12e83af1b11aebbd96c7d0da647f0f8e6f32a3813cc1fa039. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/SKK292400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9a4dbf5bb9c33911048f23ec9aed722637abdfb4e84f2f566bc26e0ca27726. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:45:51Z), 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/SKK292400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c2caf39e5b332deb6b344f98916f3a00a6b280a6ed0ae431b5e847f9756cae. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/SKK292400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7723b3b678317669dce53cd26f89bc8e96dcd3d47a804dade4d049ef70844c33. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SKK292400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012ecee2ddf1460a488fcb3d07596b97559ce6de12de5c8c6c969d0ca2c23019. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:44:12Z), 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/SKK292400112.