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 0xd52f5af81f81f3be0dbc084f01385b19f2b713200d8ff1b49a3b53298d411d3b. 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/7c3f944c-3453-44d5-a6da-ad00d4ec7b86.json and https://artists.proofprofile.net/proofs/artist/7c3f944c-3453-44d5-a6da-ad00d4ec7b86.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 0xb00c94db0c780bc7680eb7dc6d12289f4d16f3025256ef4565a3782ef004a349. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:01:06Z), 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/CA5KR1549063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43dbd65c0bfbe3f0cef1b4e9ad778f51124a8866e0db2d73f52442a97b9e4bc. 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/CA5KR1549151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5033c79654074d4dc583d2d58cbf8b4bf720bb604f56cf5e05a7f564b836008f. 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/CA5KR1549153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1feb54d2b1d8fa65b8b99f0f507c1104dcafc0ef15bb26804b9cba981676f6. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/CA5KR1549163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76655879f790d19d9b3b2b3716cd534723123a90ede6ff1c1708c65cf4500c26. 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/CA5KR1549165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631478181f19059615d30006d6c92ddba69791599b03b6b95e09a83c0509d8db. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/CA5KR1549247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50ae88690e9ffa1d2641bda2674c2394b55f4713f3f08fad95e3737cc9efc93. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/CA5KR1549204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbcc3b8d6f9b58418b31b32fc1723452e352c193b576ac910f50a405b336f60. 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/CA5KR1549217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e0955b3ab65ac68fe9d991fc43a1f161b225571b8458065f2c976d3627da83. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CA5KR1549234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20611af40d0948de67ec08674e07c95c4f3e1d09b8fc4b9234a86c9a4ed80fd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCACW1760983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff892e42c14793c379394ebdeb22f9f7d8dbfdff8e72d71a0183f30b68edfc6c. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCACW1760984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf391cf53a25ad92a92b11d4ad1ee54caa8801034665411c65414a4f3b2691738. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/TCACW1760986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9a17d6fbc8392a9b67cb23d5b6e61336c298ed853e319dd5916d6f7648ab13. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:01:27Z), 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/CA5KR1550315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b826298928c82beb7ef91ed6cd99f9f112a9700b89d231b8df62abf3bd11ce. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:09:30Z), 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/CA5KR1552921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bb231eab71508e44bf670539986c45b0df50be43b924b190046f7eeba32f6b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CA5KR1552924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288512a5f124b199fdcaa84732007f8431c0a713588d2143bb817836d724561e. 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/CA5KR1552925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdfc0d6c9c5afc4311604dede982e70adc9267813db44378af88e09f4957281. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CA5KR1552927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120a18f976d4853a0e6be10558dde0089fc274fd43700f7eefadbc4ca01efd46. 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/CA5KR1552928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0292108d1b34079c4d5ab254391138e09ad7a66a7476be8cb1d38711001de36. 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/CA5KR1552929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca67ae18731e9ae9d1832f877cf5ae69a29bb2c6561933c2352ea23fa6c8c2ba. Chain 2 (Bitcoin): anchored in block 957737 (2026-07-12T18:02:09Z), 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/CA5KR1552938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fccb080f4e14ea3632e2b15c5a3ff54ed9ed29fdf54486609ecb47dcae674a. 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/TCADI1713549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730c4d4eb93cb57922b83f21abbd4b8dbd5d862bcd4a3c62014d792086a5436b. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCADI1713572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984da323346cb6d1f36f09e10902d1fa15e7510a65cc9edb826fa9c0aa257ea7. 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/TCADI1713583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf87cfd65eb0c86ad772e03c30d0d422839afb183430d15d971d442c4e61e16. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCADI1750310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32b95f580a04badeb36c4553e3f4ae6481439b2ca3d2cd41e71fb6effc173c0. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCADI1750397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aae136b65703626fe17e1ebb6957195f985e77bb62931f0762e57b1afbd03f2. 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/TCADJ1757061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75923e33e31d6a6f94722ce88277c18ab72b5e19283f721f8be573feb9c6a321. 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/TCADJ1757065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060a1adad6a0325fc00c3adf0e0f03e15d2f22233a44f8ae782ec65a57c45594. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCADJ1757099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7d776f4dc2ae824da67c74526165d30449365049b30df102090feaf09bac5d. 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/CA5KR1926678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f798776fd73bd15e7cdcb5b2bd56591867fecfb52e6bbe4e622ac6cfce0845. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CA5KR1926681.