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 0x4826d839729f67e3ca7b88da17d06cf3b729e164d810f626d23574da84fbcc61. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29ed2131-34fe-4e7f-8161-255a33a05e2a.json and https://artists.proofprofile.net/proofs/artist/29ed2131-34fe-4e7f-8161-255a33a05e2a.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 0x813d8a35b655680bc16e11660890f9f0b5cc6ec08d04ae39a41ffff0643ce8d6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G2334134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5bba9d77b8b312bcdff7d1a81380418f6a00b48b3d6cc88c85a4079a5dddb4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES71G2334136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc751be6c630bbebf0ad1b4dccb10adca11cb457223cc4d13b3c704785339ce97. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES71G2334135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd3712d462828739b45ac2f92a2f78c436741c9cacb981ab523914a8a4d1dbc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES71G2334137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46f8fc88b65f5666429786b252032252babe8f9a160eb4334c818bba07bfab5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES71G2334138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7372d4f324e676200193fd4e5cde8d9130a22797d4e679f634ef1002e2185b36. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G2334133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00855b951f2f20c61ca76e2aee4e92210611c9cfa419d58c12f0690078343fc7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES71G2319645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e0f641c11dca9375cc8f009c1517f03e1198e293b5c8206c23672b802da5bf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES71G2328385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea0bba9d4ff1da1a60bf1d8f4adf1595d9675b5909a7f647f38c6871386421a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES71G2324146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc904e20188314ae644ff95844d4fb4cc52c570d204c6261bb2f2eabb8130d8e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G2434550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e0f641c11dca9375cc8f009c1517f03e1198e293b5c8206c23672b802da5bf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES71G2328385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00855b951f2f20c61ca76e2aee4e92210611c9cfa419d58c12f0690078343fc7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G2319645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421372f039194d534759b7b6e2088370830d3d3d52fa334431fa6c28ba359d1e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES71G2148785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7e8be8f8e7c3e0cbd72046aa389583d905b86616460c042727a4e43f284f6c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES71G2142879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed43e5b0d2aee60f37998ea25d2dd046076ed286fded950298e75452c499b0f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES71G2148784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421372f039194d534759b7b6e2088370830d3d3d52fa334431fa6c28ba359d1e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G2148785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d45bfe72b033ef03ff4a77839d6b23c66f6df7d038c2ba5766c02adb441bc3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES71G2148786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae2fae8d6d1a12edee464efa641ad18c1bb1aba13d610b208fbdecfab40510c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES71G2148787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9718477b2588d202794115fb82d25612d4b4ee9df41c97047e52c9fa9484f83b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES71G2148788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615f09da82c20876c7a11c47b292c516dcb031cab722e5ceb06cd1eee62096f2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G2218875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1a3ec91dfec2b54ebddacda2abfcd1ba02b1ab9f56c3253ba97d60da52a67a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES71G2218876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabda07e9e18ec5ded257ac8a5150eafd89af5803857c344f2dc81660d9e4b7cd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G2218877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf273cc6d72f6f53cf1926378f5db1f24ee5dc1cd02787aed639ca345c4df9a0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES71G2218878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6062cec25bc73a585ae1ffd0b5e8c50815a53d9d822166a32d58c37d697c5d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NL5XG2400002.