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 0x6fcd20980dcb4946f576a7a62734debdbf7051308709a43154f828513e5a7e1a. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4887510-b4ef-4a49-9f6f-010e84e40185.json and https://artists.proofprofile.net/proofs/artist/c4887510-b4ef-4a49-9f6f-010e84e40185.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 0xa4ceb4219d0b12cf9ec87b73efd5e45a377558a1dc4b406dd870c2b22024a6e1. 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/USL4Q1957360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad18fd34404922e68b0a6a293b719f2a2f47fb3ab8623d10c443392e3d0d174. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:19:49Z), 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/USL4Q1957361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a92e4171cb82f4d11ac6ad80f56f31f2d31cbd88ba686fe3152e4458cf8bc92. 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/USL4Q1957362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ebc29555c406bbaff4552551dc53d94a0d3f86a1debab49831496a5f83f3fc. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:18:30Z), 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/USL4Q1957363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef484166ef7a262de018983e1877f78c20188412ef41f94accc956336efe1d8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:08:51Z), 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/USL4Q1957364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0aa76fc5a4ef01db0fd924b3d72786cd97660e0a9aad1f3b33ceefe6cbf8de0. 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/USL4Q1957365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d68d904f490095eee98c891e616ca59ab247f2af279529e0bc5828636b5bba1. 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/USHM81553504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b110223581a44916ee34d437ef94af6dd060c986e3b74f3acfa312cecb76f4a. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/USHM81553505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9754015b98dc3ac1c236b09f093f0f582eab1a30df3eb644ac25cc23b7bfdbb6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USHM81553507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3923cc7fa4494b5275b4064acca8325afece101c9d76c50d0156f20476399055. 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/USHM81553509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102e495470cf884a79c02ac13e022938a7513e99682845bca1efe3c822f706c2. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:05:33Z), 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/USHM81553510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5482d47be55970ce20d980b015eeaa2fbd37e728651da0cee1a7d5e1a5aafe90. 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/USHM81553511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bddac8c241d180c94ebac48bf40b5c5435dc747d153bf731ef18e84368cf241. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:15:47Z), 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/USHM81553512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaabb89850d6e0796468f4e74eb2b55efece4be34d466c1d091ef838c27b2d6b. 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/USDY41704883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e6210faf247461bafbc419594569b4c10f21bbb1ed9f6bb9492e4b73fd1a66. 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/USDY41704884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8281c3c69c8a8c5a728767f71ff55d42a275b39d7f8be6e8a2f37ad0394583bf. 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/USDY41704885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8b466b726401821700c223d2d7e122d4db1001ba935f5a36842f1c47bc6909. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:20:28Z), 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/USDY41704886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58f88a259780e4bee483f4503a8c59970e4c4217e7e6359c15a4d8b5b3ebe21. 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/USDY41704887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6dbe6dafc72cc00895598eb6d91610fcabb6143dd9fd87cf24a6fd59f670577. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USDY41704888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04a7a615c383d056c8ec0b5404fc87a0e8d5a64f25984e42e73d878f7d081e2. 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/USCGH1854689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5e3a1a118706fc67a191d6b2b5d72732878289f95a28fb08e5fec8d577b216. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USCGH1854690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd8c51ab71d6d1c7c009f2b13d3e151e819ba1b57bfe9e0ab265d55d0f8f6bb. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:10:36Z), 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/USCGH1854692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a163c29786cf8e270ca61148ae569786855113cb2490e1f0f58eab05960c72. 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/USCGH1854693.