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 0xbb7a3668777f31b744eff7b3045431fa8972b2fe01f68ef074600be4451d3ad1. 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/2595d256-6e86-4d1b-b01e-6297d2781550.json and https://artists.proofprofile.net/proofs/artist/2595d256-6e86-4d1b-b01e-6297d2781550.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 0x8549c62382f47fd08c672752ec951ba9a43654475a32e6353e9ac5293db2ff2c. 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/USCGJ1508381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7eee9781415663dc9575edcffe26ce1ab605cd2cd65ab37e63a753e9c470599. 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/USCGJ1508389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b9cf71805842450ea21d58f5a7557acd02c51fd81dbd8ee82b91117caa512b. 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/USDY41540918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4485d2ffb6d91133338275c6d83885eddcd99d99c4c611e8529438cf20655235. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USDY41540919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbcadfb7394d87bd0b7764c30203c9ad976104bd4f307075f7200a83f4bd5bb. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USDY41540920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f792c5e8f31a4c7a0f3d39a6b040f46d177016230d87d342adb5ba86595a2fa. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:41:55Z), 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/USDY41540924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785993f94634a2c0b21648eb5f074e978d2a2283b3018f31687be98efeb0d476. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USDY41540925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3073714b9a1752ea3123d4ac4648fdd10c92daf18aa6ee73e755b7ceea77f8a7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USDY41540966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbc5816db2f27a3c07e3a9cfc7aa729f98b0f03a48a5758e765e3b5a3071c9f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USDY41540968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1180263663224b8e290258a0684ffb989f361e4298296c2a7e6f391773886f0. 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/USDY41549772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f194853fdef1b7e2fbef735bc931f6e127796b62a58232b5c0d32b73c3eaa61. 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/USDY41549773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3451c5788d7704503b0aa01088bfd3b4436073b2317d2c4569213e619aa9bd6. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:51:30Z), 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/USDY41549778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e45ca87bbf9e6552c02ea457f1af5acb2a516b9cd3727a96e59bd11ccb5c1d2. 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/USDY41549780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e40b1afb7204bf62eedc56b6ba9bf79d94130cd7717d053ef24093c8514890d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:06:11Z), 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/USDY41549783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526f02a07e05dda8872cfe43f07b0b4685712a0a89ce7cb1b0185b8769cf4283. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/USL4R0771828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc32305696c0624fcaceface440daecef99dfc7e13d96238bc533a3d84d642d0. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USL4R0771835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3559e1b055011276efd78d449bd5358d92f832b343b855c8143fcda2489beba2. 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/USDY41540877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b594632f00ba5046366e0eb4889876ee8e0db942e97d718321c608ae83ea35. 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/USDY41540886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cc1cc8e8c3be0834a1704b1e2b6d281c77f1906bbeb8c1d8982e1d274f7153. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:31:37Z), 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/USCGH1470434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e56613100bd714e91450f488ca8514246d1a71086e32a6aa03b30bd2e526e9. 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/US7VG1538626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2f5e319c4559c44f458ef1b50c783cea5c4e711d4de3958ba95114b664b72b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US7VG1538628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f748af523a6dc7c6af4ad70b66a4cb4b45613826c4ff7d8c902bc319ce0e7b7. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/US7VG1538630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50a15a74f6f1b1b0d85496d9881442171ba00214479f93505a0178726fe800c. 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/US7VG1682061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4087880b17dbda35003b2caea4ee99cf25d64386be56bd8fe8af771e505fb6ec. 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/QZGLM1982428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd203ac30f92fb12f2dc709d641abb79745cb5f033fb6d7e41963a23fdf48f599. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZGLM1982437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24a82ad942e32452c7c3d095c339582a14879f343bedf7fd16c42a1427f477f. 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/QZNJV2223254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb94fd06c8b004c65737ee991bcf84ea49adc5a718ecfd71da4c003bd47931b9. 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/QZNJV2223256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15048acbb330b554fdaa37eaaa4c82ecbf3358ee38502941e17a8e33fe373d56. 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/QZNJV2223259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f3a0aa8264cd17e1b2ef0a9cbce5894c44cb7ae181a163773f72d7f80f3823. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTPX2442999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403aac4f4104abfa533dc64615af4dee40ff3c72598b0f4b799135e2c9e542d9. 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/QZNJY2589743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776305da622b2021d2824cb30855fb8af968170a2d09d05f8e71cdbba7aba525. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:50Z), 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/QZNJY2589749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ad458f031a3bfcfcbd3b2db1ff310cc748bf1e61511179221b4fe6ee9fd7ff. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNJY2589750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1c9b64dff2c223e41bac36f40929f20f52918ba1cb40b42aa74a9afb1c42c8. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZNJY2589752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848c77c7a6a5bee16152de72c63aa5e78039cc959d115676b10b090a0d149f46. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNJY2589753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5530932001febaaf51c925afd2987cfc05de91ab320b63776db4d98f18ca0937. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZNJY2589754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee692870ca3d13b2f57a83a94b27a055f7b7bc3508108280b2f79d3374f155a1. 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/QZNJY2589755.