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 0x657ebdebee7f14a78f80f1ab603d752f93f8e22e10858b619d25bc99d8ed73ef. 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/37415204-c22b-46da-8f18-1c90a1b6864f.json and https://artists.proofprofile.net/proofs/artist/37415204-c22b-46da-8f18-1c90a1b6864f.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 0x0e51bf29df24393c5afd6c0106d1e3cef99a827db16b5580d290809fce5eb2a1. 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/RUB411300213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5189be692b5469b3a9debc39026f569deba25bd0159b1c5411078870283f854. 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/RUB411300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa8ba9ba5b874f83f5f5795c594d9f300a5d9e7c289a761561c30dba0aaa2cc. 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/RUB411300223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd145e4d7527138f8742765ba730da513c8600e49353549d5efed4d8fcdd3b2. 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/RUB411300224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f49371b3a3eb0c7be3d6d71afe3c19880122b8b063f383f3d602c2b4aba741. 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/RUB411300225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9ba6a25a86182b6a506515dbe5a89388acfab2dc927925615ab681bee9a5da. 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/TCACI1517747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc37610c9a9fb10fc4dd0402f94b1281bf570484e9333cd779a567c164183ee. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/RUB411700779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa0afb36e10881a573a88299b2cad144cf67885c6dc072d23b659e76cad0ad1. 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/RUB411700780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3354a45da00fe29664400d94e303bdc5b1154557dfd9b3e3db6154a672044fa8. 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/RUB411700783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d72f9a26081e060f4188e18b1f1e836f95e5384586de6115b1ccdf6cd2941a1. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/RUB411700785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc619b45013b91c46473cd98f0e47e92762e7788899ac0def8e1fddad02b3830a. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/RUB411700786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c68148a2ae7ae4c2ac38c781f6532915102f4c99be4d01563cb6acf118c9b6. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/RUB411700789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91807a7acab534219c7ff77b90d0b423de1947b55801ac70b7d427ac79ecf25e. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/TCAFB2000355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819577eda5794d6a1f9efee3a89166ffdd85bd98f781f1538f93aa159c1db4f5. 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/TCAFB2000362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24fcf31496ac279f84fe644b82ec9f3aa1e61d9162df77c0d8f34eac02051e1. 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/TCAFB2000368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acfc24a79389335577ad87cfd20c2039fa1fe56138fc787fa3d4719e93c67c5. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAFB2000371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1509c4c4ed1b557857f4d7f38accc6395a33a620b09479e25939959c887ded. 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/TCAFB2000373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb77387d9a63df81fac56ebe2e15dbdebeff50d1dc8bc9cd635b5cbc8543f9ca. 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/TCAGO2257486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b16d3dafed9e7e624837ad3a28e5e7e850d95d9eaf9b2a4be102cdf5351f5e. 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/TCAGO2257488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427cb707b3577e43ee094e8714a7c0189d7b51c530f0e41c2e85e62d491d7329. 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/TCAGO2257506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8407fcf7f3d9cda95774c56dfe568ab03289f04879b0b171dcbbbafa79aa1be6. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/TCAHJ2315295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2dd605d0bf611ba4de1f61cef1de341176fb7c1efe779cb50814d9f9889f5e. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/TCAIX2420128.