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 0x45f900a82403fd5a4ce4528fe0eaf71b00775edd42b6301c9c3ae52d49be90c7. 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/4b6f9bca-e877-4203-a578-c32c4a18059c.json and https://artists.proofprofile.net/proofs/artist/4b6f9bca-e877-4203-a578-c32c4a18059c.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 0x240f4ea539f08bdffb856e267b3296aac4f262f9f8c3339221cdfb46a383fd9b. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USCGJ1728997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d7032bedbba4cef5312af41e4ff718822dbea528572038ec3142443e3a902e. 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/USCGJ1728999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd39a79fbd76a22a2199496544aa4a5724add10a3bae591908ec3332e2a498ab. 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/USCGJ1729001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9572dc27e8daa85220a28123809cb43abc9ec40037094baae1ff8fd24201bde4. 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/USCGJ1729003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4532427081079fb5e120fe3c39622b83cb45d309ab659a028f4f14ccb97dcc. 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/USCGJ1729004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c5183e5d385dd1217e4d97e16edecb98caba2e04324bee96ec0950b3403be3. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:59:03Z), 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/USCGJ1728986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb8d2c9570ed52663e3dd2986397468ec220a6d2f6df9b0dadbf910ed07fed0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USCGJ1728988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9550251651be521304504976f892bf958d07223eb17a3c16c676c497c4cb32. 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/USCGJ1728989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c73aaeaf2b1179a8adddd2d6e6eaae849a7823216e072dd1a8475e2c74d10c7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USCGJ1728992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971043c8fc85dff6735df16111f84ef0b0e65a33df1d7bd4ad04f352ad6651f3. 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/USCGJ1728994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e95a9f9e490cd5623e403751e32dedb3d6602f3c088bc45e8aecde29abf71d. 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/USCGJ1728995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afb72fa92d9a756348a05571f7f70d3d67d9207a23f8170811a50efc88c2860. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/BRFWL1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cca3ca22be6fbba831c99b6ace934a96efe60f970ecd9f7e92992b251a0f166. 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/BRFWL1000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97053d7f2566ab535cbd5472ec80d6cefcf72493d51adfaeeb2a01e43afb4240. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BRFWL1000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8bc0822df8e299a093509714d24b9f20f6f9295aa26fb746f82c4b8820b85e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BRFWL1000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b4a5ad5446d388080589a1634f472d5d7698dab6df32b76050cd1208c5587f. 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/BRFWL1000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997a414c28d7d749387fc9d07fe396981d2e29409ecb9f4e7cab7c05624b2cc1. 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/USHM81820562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75f93e6f5931f8532c2760f5f20d5f8843c08f3c5da1edc669758215ffe1692. 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/USHM81820563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9dec4da931a154a7f6d591a7a8e2597fb50f56a297329526f3b5082419c95b. 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/BRFWL2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7d23414b6fbf39c95a080c86d0c2db0e521cd70f0509ed5f94b15d376c5f5b. 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/BRFWL2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581ac8d70d1b664e7efdff7ca85d53aedcfb77688b7d279a167130e96cf225dc. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/BRFWL2000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb5b420e59eef93fe17f2abe986e31e66c588a535d1f693d2d80d262ec1a600. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:56:33Z), 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/BRFWL2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb054914793c5a82057ef2e1a86b987f1fbd3555be787191ae36db82a7bdec0ef. 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/BRFWL2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9764ff0ede85e5bc199f017fc6fc2ed3365f8664231c3a23eeccf245d3419c5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BRFWL2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973d2ec985b04a24df5ced813e8b6f1857bdac65556c262384eb50b019dc1d49. 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/BRFWL2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99e52d4e3c0a1f78feafde289d2acb5eed4e6f1410b9488610d6351dbc01e2f. 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/BRFWL2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898269148e04c0696beaa33fbe519c57c271ce22a2b21f739a0851d0012633af. 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/BRFWL2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25d34a8ef0be2c0c8f993065f51faa4212b0856a2d4621d8dac75cf92e4e58b. 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/BRFWL2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f088ac03c66ec849d8bd5af8d1d7be167646c203f6f4ad2fbf37de5e7ed9bbb. 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/BRFWL2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a5c986d4cc6b16a3235b4693a167a25544aec6deb84c6b20b977d45bc74fc0. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BRFWL2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118d471ffa9efd6b83396ef02bcec21bd309d55e013cf4a5d9c6e680fb68247c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:05:18Z), 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/BRFWL2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ba01abaa081c367fc05881cd4a6b5d02bedb855b6d7526cbbefa264e08bf88. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:44:33Z), 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/BRFWL2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd4343872c5de43bb2d281dde82ddb018f67d35019d9656b7c342a31ec343df. 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/BRFWL2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc4518bcb0c7d45e5f39a58a82d98b219ff8a8943f633f0a985f0343a879448. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/BRFWL2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad43a9b13a753845496adc44d3c16ec317b5d1fa9cbd321c1173a3829243f0ca. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/BRFWL2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6da467d15bbcff37f6056c63de0285da165fa46ced1896884cdc234f47715a2. 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/BRFWL2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f78a7952a89716d7713497cf4395b1b2f828f432a0ed83940f4d7bcf30bc450. 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/BRFWL2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82a9aa9e7daa2708ff3cd53df6610ffb9eb9c4de2f5cd6132cd0b9925ea68dd. 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/BRFWL2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b04210999a64e8f1d26c5c73fcb46229e81aabe2e070e7e7d1a9d7ae4e9e9f3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRFWL2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25cc2db3f055066fc5f665e99c34d68c1e29c20ce11eea33b4538ab98cf0a2d. 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/BRFWL2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768ed472019e806f3ab5d7d8d7b2ee24c7f96407c58eb9e3ba0e21abfe47e1ea. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRFWL2400003.