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 0x45765dafa8cae435b39017b6bc519d9a5321060ba98639d0c075c8234d7767c7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66819153-5d1a-4d14-8401-e8130a2e16ab.json and https://artists.proofprofile.net/proofs/artist/66819153-5d1a-4d14-8401-e8130a2e16ab.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 0xd46e165606b132fb563c7e6976f35781c8f7ff11c312a5b778c85575939a0797. 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/ES09F2400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63975fe093aebbc8ba8e2a6de6020d324ec2b3a98a521c62b9392e0ed10bc7da. 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/ES09F2400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf7a3175d2e853bc3369143afaa3ccabbbba75c3483b6441f92457d452fdd43. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/ES09F2400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b8436db04aa360d9f5bdf176e3b97efaccfeef49ba862a75181e0a4135b908. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T11:11:32Z), 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/ES09F2400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4968e4ddea37251de9d60183b7f19e65a2b05576f6e0555467e5b3021ab27fea. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/ES09F2400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac2ad7f02a72619e3e7850f243dd779eebf8d3a711764390c3707aea593f76f. 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/ES09F2400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d3031e2d3c2e98432eaf86ec89b6251c58f47bbd4c9d33b2d77ebefb691ee2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES09F2400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f6a2536c5a19eebd8f852b464cbfee360058184631b784464008b64aaf5e71. 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/ES09F2400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac946126ad09e585b9dadd6498372e3aec33494716cfa2648091bfc75d516b60. 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/ES09F2400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4991110e608c0ce2fbfd977f98d1046ed088e23ac93fe6e484a93cd6744859. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ES09F2400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e6bb46ffc762df2b1274359b51821e6b3d881299bbbcf362ab4e23f8f313dc. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES09F2400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb0664795db47279a4ab77a03cf49025079093c96df85ab73ceb94d5268dc80. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES09F2400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066db235cec185e2644ee9fb35d8813dc66309cc9e7d8f47ec88d5116f131514. 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/ES09F2400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22f5153a829d19ebe722f73a009bcb8e269d2250fd3ed5ed8d16b10a1959de9. 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/QZEQU2045130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdfe597feb4271c504958da9e6537929faa1ad3683900c2ce61c399cd1712f2. 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/QZEQU2045132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5144cb8850514ba7462e979bd71b3b56b252df9e43d77ea123c1a0cc960f2cd1. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZEQU2047968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70304937407c1b031b5f9c23e64856e6085ace9af507fa4ef1921d6c08713ca. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZEQU2047979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afda0048cce967eb715eaadc2a358b7f6a23ea1701232ff0a1993e98821ab35. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZEQU2044649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8f35cfd38e9770a79dd2e94c7914094b9b5c87e82df8f9c37cc7dc9eb9a0f8. 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/QZEQU2214862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9034adf3f79dfca4cc9f6c151aa181a98058bb17ae3b2364527c0cd3307d6f. 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/QZEQU2214863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a5b69a6045fe788b85cda0db443eba8a91cdfc6baa5a4a820f15253a99a9e4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:21:42Z), 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/QZEQU2214868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f78c9e71d28a824eed5a8c3b8bfff81b806f875ad9c186f23aad404cec7a8b. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:10:19Z), 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/QZEQU2214869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181e5ac6ace96770ad4c2d870745f3fe2c09fa8e68c27ba9d22e4dde358374ae. 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/QZEQU2214871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90eb746394fae6f4e4fa4f11db853ae676d48f0f3d43033b3e80566b9923148. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES09F2300000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3c5c39e926789db78accdabdecd0606fd7da64971cb7bffa7ce92a2aeda513. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:59:47Z), 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/ES09F2300001.
Pot-Pourri: Amor Falsificado / O Que Passou, Passou / Só um Lance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56ea2cca4c8ec2c20b372bad95aac20c8c5b68f4019f635838b247f0283521c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES09F2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d531c25fa7b51d8ffc946bc8537b29a9256ce763f1a59dc9ee10cfa7d52a0cc. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:23:41Z), 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/ES09F2400039.
Pot Pourri - Amor Falsificado / Só um Lance / O Que Passou Passou
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e5d231e1b84486f0b88a564f8bafccb7548e45bd97028fbd66947426be1541. 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/ES09F2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab22f89a9b3ef08b87a9f4c10b08864e9a6c6306207f273a3ddde443e2c7d50. 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/ES09F2400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a055fac4b16c2ae53ac2f980ac758a8ea5797977b462726e6ea6595b488e8aa. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:07:34Z), 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/ES09F2400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9b7717f7f432286a26a7e201ffc06527924be4d2d22b13b0ba4e350b28d5f0. 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/ES09F2500118.