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 0x6079683610d8e50b6fd01ea3e6b225aff8978bb0b9aaf979403f848f388fe72c. 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/29e58af8-4b2f-472b-8d25-f28f5eac47bd.json and https://artists.proofprofile.net/proofs/artist/29e58af8-4b2f-472b-8d25-f28f5eac47bd.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 0x4371fff3f74d48c0c0db7551c25f60fc8e0c60f87f9d36b9dbc301fe9d635fa8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:44:35Z), 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/CH6542057399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfb2a81107e936e59fac798ad97f963758e3c4cde28d6adf4680e2d8a732da2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:25:28Z), 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/CH6542057398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655e93b0237a3314d7fe36255056073749a4cdc2d76c9f7c1307aa193f66557b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/CH6542057397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4120c30858e28fd7571680ff33bda59c52d185476fdbfbc8b4566c0bf2843ad. 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/CH6542057396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc531f0779248f104a7c62555c3379437979e6353120883bf3fa39af0557a299. 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/CH6542057395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d27fdcb81a78a18e95a3741bd50444f57f08615384f5b6d1e63f85e3aff57b0. 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/CH6541917581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dfd954142f2cad9034e87d1495b74e7cab7778bb1041f8561e77f9ecd675e7. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:41:42Z), 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/CH6541917582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93db0e14f6317bba015eb4746848e0657a8c804d255f39409e997f35adb83fef. 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/CH6541920383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c99165441105933921898d756d869dc1e0d686ff5462f387e2ac9dce6f946fc. 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/CH6541920384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b189e847022fc5f41c78b2e24264776a619b5deade95959ff2c99ff30eb6ff. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:29:33Z), 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/CH6541920385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1448080a6c94d580d83e8ad6150e74d82adafdbc8fb68aa2edf3acd40f9f689a. 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/CH6542058201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f04fde7e204df8c9c69c499dbf727cdcafc4209ca8aae9f0467aebb3999de5. 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/CH6542058200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b214aa17e161e6f9c02607f6367645b32ad2ae410ebb88054838304a39a06a. 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/CH6542058199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca49342807a85c07a984e82ed268694a129477669c6a593e2c5dd11747a014d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/CH6542058390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804bd5ac15d9f4f85e01148af7af7e7433318b92a36f855d0f9b7808064a449a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CH6542058388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cb95e2515e5968c7e98e3c9abbc92d58344856b55fd7520b793194461da550. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CH6542060925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5123f0026016cde22d3f8c48a850fb99fceae85506d1d12ce61812556884fb4f. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:42:22Z), 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/CH6542060924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03239ff9eb72d562dadae7b8ca7e6e3089148005e93d9ec9d739b4fdd092521. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/CH6542060923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961c4488b4c6edca2fad196fd1af9b808760b3964e3e40a2eca0df7795e90cc4. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/CH6542060922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbb61c4b72c896a466ba0f08da6588e42118c4016acf8723999c8d370fb917b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/CH6542060921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08b4afd62d8de8f15262249616e5d39640191b8a89c3aef04928e4bc78e1075. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/CH6542061531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971f96ea618d1c76883e805abcaf584a47c9419548e772f259b23ce632471ec5. 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/CH6542061523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98428687d2844adae37b7467760b1bb37bdf2fcdafdd351575859d0ab7598e9c. 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/CH6542061522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eecbad5fea9d5a8dd798d56941a0991098852c7a7733bd2c144ca5fbecf762b. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:04:45Z), 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/CH6542061527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64f6e73bac7d7f96cdf1b500d9e059d7364f86498fe486523503c028923588b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/CH6542072405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e890bf065dfcfc087ac49f39324dd818988897895a27b399d0966c7eac3781. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CH6542072407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6a0ea1e2d2ed30c4502d340148959341e27b43f9058ac9fd528d21532dc156. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/CH6542072403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a979238a9d1fb07ded29f336e0d64777effbcb7603daccf7e8de3358709f1b. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/CH6542072401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f55890815fbf127a460594eb1df7000e7296dc6666e5e2cd9878a8c7b8fa2ce. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CH6542072408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3178193d44dbf5ec9d43b1c4c25b94a0c5746708b94db3586fc2406bafe8334c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/CH6542072630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c314b924ca223b28b0811bb2e97da774236c3d83b392ae3d476aaf1f0d3086. 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/CH6542036814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb027277ab1e054176277888ab44acc888a89997723caf8ba32d41a6fecddd03. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:23:22Z), 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/CH6542036801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7f5a16c632ada3636f4924c70a1a7f6398a12386486c12fcb9181df45a7008. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/CH6542036800.