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 0x6f1df02e6d61ad42805d0b59a2daabfd2cbc697af8888de6fb0f97a66e9476fe. 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/bc9f5c72-e673-4aae-a4cc-76fde4b7520e.json and https://artists.proofprofile.net/proofs/artist/bc9f5c72-e673-4aae-a4cc-76fde4b7520e.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 0x25494fbd308d1066bdbd69e743795c57dfda990c5e21e66ff8bd32e16a78fa53. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/GBMJG1705300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9da9814739292ab05c43ad1d1a8d1b47c86b33e45ec62ed9a5577eb66731b0d. 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/QZANL1777380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7b2aa0e37d608cb816f6ce2ee2e7a12c0fbd4345f8383a03ef1cfe832d82de. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:38:16Z), 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/GB72R1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62a600ae16a9de9ce3f116e3028d3d386593b6d7761c5cb42ab9ff239f6e327. 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/GB72R1900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d27018b87a0af536b7dc6b86d674f357c52538d6f62f31285269bc979c88b14. 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/GB72R1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab9533d4fdfb20c280eecedef4a8f721a04d4d3e75414e9d44e0de047b72d4c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:12:36Z), 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/GB72R1900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8a9989dfd75c0de23d4692b2f578c290d1662ff0db2bebdad172d9ca387ab8. 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/QM24S1927057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa266d5a5092d502a34ae092975ad0d7d87e83591cf8e2e46f9251c1d8907804b. 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/QM24S2000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521baa038dedcb2f44bacfa09285021eb8eeb6bd25c9a6b605fc701166a06119. 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/QM24S2000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485c5e1e9f7afb818142829d9caf37c2c4aa1d9b4a29dedbbd4369c6b3255751. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:26:57Z), 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/GB72R2000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f22d3d69514791ae22168174c8fdd9d3366ad30114e1b82e9f24da277cee4e0. 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/GB72R2000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2984101ef52872b73be94666d1aee7c19253c77b7f7b35a08d892e1c5253407b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:39:10Z), 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/GB72R2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8a65ea83dc51636132e0179a86ff0024b0f6665c88ec77a8f5341e2b503f81. 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/GB72R2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f69b1ce2edf79811f923e8a667fb7873621fc2cb60507329091d9fca3e2b4de. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/GB72R2300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc311da3d950f2eaf668d484ee47a201d388e765fc6aadef2c9b7b625541ebf4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:08:56Z), 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/QZHNA2435907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9e2d351fc6f5045096bdec08c70e5b8a36cc8fbeccce7cb2a7824405f613a0. 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/QZHNA2435908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152dd23ec0e4770cded8804164ff0cd705442dc8c88006b85cb85f615d5b96b4. 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/GB72R2300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2b55fe8c275bc258ad5fcd0d9ea4095feff07be2115808e20ac8ddb84dfa4e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:38:08Z), 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/GB72R2300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42664d570f1aa8bc60e50549bdea05cfb0203281449c4ffc89877b8376e4544. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/GB72R2300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47ec2862d672f63b72bc74e94d7ffe0db8914404a57ce61f2cd1ff11c09740e. 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/GB72R2300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97572b837e02e04e8be14e1e78b61e7632d801178b839057e8fe50bab97097fd. 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/GB72R2300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06746cc0b1560385d3b82792d42fd738ea9cff63a758435ffa25fceea504a728. 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/GB72R2300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c999a5595556b1047d3be12b4a6c90d06985a444339280794cae18e040be29. 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/GB72R2400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e123cecfca792e359f9ef4034e7b40724a13bdc47f377322cbce80a76379158. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:00:27Z), 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/GB72R2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5db4740630ce431a14b84c4cbacecd0933b5db240c0dba1f464d727947c61aa. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/GB72R2500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901eb6c9fc08ca4958eccb8a52a0701292d83a026452cf2b8e51e6b0b294cf7b. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:54:56Z), 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/GB72R2500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aeccb4c929eaba9b039f690bab1bc51d3d04320c8c5069edeae8af898d7b680. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GB72R2500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d08c6f151b8fbbe1a6b891eb3617520778d13a49a6164fbd051aab34404f7d. 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/GB72R2500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd86c33b10fdd0da5d608370ad8b93283d5b8e4196b7671d6acda773bcb7010. 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/GB72R2500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a65744c4f9c41d973c7798783d947a68fd0771d1d6aaa03b440cba95446c5e. 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/GB72R2500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c1a60cf0412994cb4dff20c3d8657c26d49c38f154df7f41e83b27d7ca6c58. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:05:55Z), 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/GB72R2500077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237c13d05cf078ac74bf338e28e5e8370091e1f381df306d2956a7d0e6a6dde7. 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/GB72R2500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c409a88c157013d6b6cb228e6990e323ee0b97408549c55f979c78396b88ff. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/GB72R2500079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c61b4411fe7406477bb9dc60a0fe582310b1d9ef4e9c7775598a6e3f390c1c6. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:42:44Z), 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/GB72R2500080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc4faccb1d290ce13412ecb5baf95a85c3fe0ba2735ac5b90858983ab77f7fb. 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/GB72R2500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19db27d28c4d8d8eda1e24aa032b20483fd25eace7113087373d87c610801094. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GB72R2500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23621f1586e23717ebe5fa4388c62d85f8f696522fd2847515413a9a839dac80. 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/QZHNC1956822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0d28453c0bdacc0ed5a5530e38f5e215532fd157f5e7beb82034c9f4c4f845. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN51940516.