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 0xcb08b0739f88168ede2ed01713218ea25047c7846b2f814535a7ed69a04755f1. 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/80766032-24f8-4e79-ba5b-f085f8606f42.json and https://artists.proofprofile.net/proofs/artist/80766032-24f8-4e79-ba5b-f085f8606f42.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 0x98b1da3c195c14abef74da2d96883e4c8d5cfbcd98779cd1c84c2a07b2ce0836. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:25:53Z), 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/QMFME2194658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893350248e9649e8a65c39b8539042a208a5528f455975d74dc1e1e1971fbd99. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QMFME2194659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5ded6ee6674f9fb82250cdd8ecd3b6d673cedb45d7e69ec1432cbddc757606. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/GBSMU6764851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6af1e778e99d0f8b337062e99512792fa2fc31f1f4a6fbd18e7a2408b862a25. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GBSMU6764853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c349ed61fc19e92239d6f4cf021c784c1267581e06ba53ec2722d07b56357f. 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/GBSMU6764857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf79b0c6409b8ae467109b8cbb8363c2815139b155a9167d8fe29c0601611d2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBSMU6764859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1756b8c11da2ee02a239d3fec4d161735830ab71db6db8bc42b3f5cef8b285c0. 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/GBSMU6764968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290f484973f63641e10455de5b0c9cebad41389b845165e58147ea01696fa979. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBSMU6764972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5ded6ee6674f9fb82250cdd8ecd3b6d673cedb45d7e69ec1432cbddc757606. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/GBSMU6764851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6af1e778e99d0f8b337062e99512792fa2fc31f1f4a6fbd18e7a2408b862a25. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/GBSMU6764853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c349ed61fc19e92239d6f4cf021c784c1267581e06ba53ec2722d07b56357f. 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/GBSMU6764857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1756b8c11da2ee02a239d3fec4d161735830ab71db6db8bc42b3f5cef8b285c0. 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/GBSMU6764968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290f484973f63641e10455de5b0c9cebad41389b845165e58147ea01696fa979. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/GBSMU6764972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704603e5b69a11e7bfa06eae7ba98a47a7d3f684a2df3ae7e78d2bd10f972a6a. 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/USHM82010020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5cbd6c77bb08311360c0656ac7b511c9210772ba4c16791fb479a899d29234. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:03Z), 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/ARIGC2000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cb65e922af63a533cf73df195ab6d92fb59c68662519cdd25be93b4458263c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:55:24Z), 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/ARIGC2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15627879707d84f8d31faf6b8e4d0fcd68118c806b41fb8add5ee8493dc5508. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:58:31Z), 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/ARIGC2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6518487de5ea09ad5cd87aabde7f85dd7f5621ec2e3d74d6bdb95e8a329ab9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ARIGC2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83765d8b9d89b1ac6a072152ff20d027e4f43f38e62a9d8f7473fd6c25ac0300. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/ARIGC2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d973fcf6f3861c828cbef93b9394d517e56cd36153535c10402a963f2bedae. 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/ARIGC2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235cae78bc6f01c2a87e90be97c81265c9ad3b37edd4ec97bb60cbe6ad1746fe. 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/ARIGC2000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cb65e922af63a533cf73df195ab6d92fb59c68662519cdd25be93b4458263c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ARIGC2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15627879707d84f8d31faf6b8e4d0fcd68118c806b41fb8add5ee8493dc5508. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ARIGC2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6518487de5ea09ad5cd87aabde7f85dd7f5621ec2e3d74d6bdb95e8a329ab9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ARIGC2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb9851e963faf0f0800f9e91a4b558f4acac93787524a1e643e92073a470b88. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:04:23Z), 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/ARIGC2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83765d8b9d89b1ac6a072152ff20d027e4f43f38e62a9d8f7473fd6c25ac0300. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ARIGC2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d973fcf6f3861c828cbef93b9394d517e56cd36153535c10402a963f2bedae. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ARIGC2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235cae78bc6f01c2a87e90be97c81265c9ad3b37edd4ec97bb60cbe6ad1746fe. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ARIGC2000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523b208f20921a02bec68af6ab1e2094cddb2072b213207c12582f2dc979de3a. 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/ARIGC2100199.