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 0xd519ce413a01f71a59088f9c3cb11663f0a02ec6d0e28446c17956898313972a. 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/a94024bf-d33d-474c-80a5-cfe1109d9993.json and https://artists.proofprofile.net/proofs/artist/a94024bf-d33d-474c-80a5-cfe1109d9993.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 0xf60f3ea8b716c7629db7ee6e8038642578f41160edb375115abea80fea79e4dd. 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/QM6P41417474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f029307585ae4e4a07b34310f6b2a0801b5fc0a2ea2a5a09fe286cc2286cfce. 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/QM6P41417477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1375d306a90159c386c8632233f8d53f48ce299a135cad43cc8ab76d1b0e29. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QM6P41417479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9239d2235b43d1cf9520e2e437fd09ec451b9efa33f323f1d3ac894e1ec7b9e3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:35:41Z), 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/QM6P41420524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892f97c4141577668145d0ebd110b067a6f67fb5ef40547d5dd73094c491947f. 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/QM6P41420526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe058da008a1d52cab669678d73f656dcf07b4fee10b9f4a1180270756afb3b. 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/QM6P41420527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dc1cf2934521a9df69bf1cac7fba05dd8d216125f5ac0e1a29a6f7ba93b3c0. 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/QM6P41420528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cf85d52fe01bb4a5ae5e22eed0482fe39c83d7426000c371f33d570a22e5f2. 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/QM6P41420530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338a70b538a19ccbb347013aabe8a2631a9d7f0cf000bc64c24c58fbdcb567c0. 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/QM6P41420531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037edc97ac6db3d04c7b231b086fec58691021c669a08f707e2b7f59b399e523. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:00:11Z), 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/QM6P41420532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a72f211fab29be33dd23f0b770acd576c23051ecfa5d3c0c904a86a8c5adf62. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:34:26Z), 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/QM6P41420647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8aa010058b697c99a74a1c475a971299582a6aa6a9e8a33dcc5ef5cf734669. 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/QM6P41420648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07e1c56d8695c4be657cc4b292ded60bf041b869befefb047a429a4639c1033. 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/QM6P41420650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf602e2c1475d18fc3c7e0960f663f3e57ad3a1a1d5f8de7729911ee71e865025. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QM6P41420653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9481e082415eb896c4c28729a08a340c3063d257d111726ea05087e0a35ed05e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QM6P41420658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb86978369e51dbf38f66fb4965561d0311ff6d48bfac1710570813e0bdb1a3. 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/QM6P41420705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c92b9f88a62869f862a05b6706745787e7ef56034cd2cc3a6547be0d9d40c25. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QM6P41420706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfa1a5a15e8eb6187bb77bad60b9153cf60c4b5ff0cf8a6a7e10e9e0864b8e8. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:56:26Z), 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/QM6P41420708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbbcd3af717bb72f6fa7761469f14e1c49f7a2f3abcb0b763bb59529660b5e0. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:21:33Z), 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/QM6P41420710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b53c0167eb12a97ca9a4aef69b1a407e77bd21b435e5954ca178c3e2733779. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QM6P41420715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0e9db83b63adcbacb4043bb6108028a169be2457fadbc0a1b047624ed42f92. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QM6P41420716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec86eea3c03b893dbe29740ee3e0b718b792b85acc875730ba564cc9b0cf5c0. 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/QM6P41421379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0320d6a69b4abdd3f378e1cde0f5fc593a020c8fc682609c7ff2500144cb551. 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/QM6P41421380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa0e31e9e8cc5f60ea159ea4034e760c398290c7bc8bd011491c232d406c2fa. 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/QM6P41421381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b83fe377e0413dde97ed53633982e0c7aa706cdcb3dece2c8781f682b96c9a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM6P41421387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf863f047ab577667e6914bc2b5baa64d8158fce87a50fad1f4bf6ee2d628f93a. 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/QM6P41421389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d862701802f07b3188f100505072a6ec3e2beccefd2eab55ed09e8201425047. 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/QM6P41421504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f99466161c91c0e1e2ce0005629c482693ee623499a204a33d853a33efca471. 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/QM6P41421514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1857990b2ddab22e602686858f6fd3015b0109ac3e63abc033ac4132022f3e27. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:51:32Z), 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/QM6P41420638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2d2da100e950cf9152d1c291b765d988ebdbfe4f874cafeba36c8a1253b914. 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/QM6P41420643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0a4b1e2370b29af3b966b7a369f59f000b733dd9f95cf376e50bd51ac76f16. 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/QM6P41416845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dad638bbbafb63252cab6343d5ddcd5099f6037e73f3931b88e8335383d3bf. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:24:14Z), 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/QM6P41416804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa921786027ed4c42e3c366ea2dfe6367ca7f43c1e23865b5f3ef9970ccfbca2b. 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/QM6P41416806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8def03dc8c65a21eac988a3fe0a3d57b68df1c36cb8af22bdba97f164a784206. 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/QM6P41416809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113365109285bf783ef2aafd30c902dde244938800cb117d9e7c64a7b13783fe. 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/QM6P41416812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf08a568eb89842085e62c15601af3528634f9f5b61999a836a46af7583d485. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QM6P41420644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b83fe377e0413dde97ed53633982e0c7aa706cdcb3dece2c8781f682b96c9a. 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/QM6P41421387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8aa010058b697c99a74a1c475a971299582a6aa6a9e8a33dcc5ef5cf734669. 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/QM6P41420648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbbcd3af717bb72f6fa7761469f14e1c49f7a2f3abcb0b763bb59529660b5e0. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:29:12Z), 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/QM6P41420710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a11b8bde61c77973a0b9c0854c899d64a4ffa89c8201108aa5cdc8fba02eda7. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:47:59Z), 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/QM6P41421388.