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 0xd3847c4775c9b39d3fc75fb3e93441e366ffcf3060a558fee5e077aee49f781d. 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/5934a9bb-893b-410b-a542-aea80e5cae68.json and https://artists.proofprofile.net/proofs/artist/5934a9bb-893b-410b-a542-aea80e5cae68.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 0x9a630cbfea67a8c80a4a14c178e3864f1102631c71c48f4944a4d46bbcfb609e. 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/NLT2H2200744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf773fc154b12d5c7cb67cf5c02b4e62ad7fe47a4285b7d424b6b7d68f781c512. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/SGB502381386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41b88c24c5517d2f72f1bcf34ea344697dd2925db698009343bd41f6c920c5a. 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/QZMEN2300782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb28a280d7fdf1ef97d2ffd7505b8a9577cbc85c0b2a0a9461000c6056c6291c. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZMEM2398760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78c19c4ae9e3bdba2ab8e001e8c4757e072ec73ea8b80cced3e45208362be39. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:29:51Z), 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/QZMEN2300784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c113418b2abeb46f4b20a694f6f1c4c9c347416485ecef2c880bd8175e29ee. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USLD91748597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb17e251852903301311ca1a16b62be945c2d2fc1fab904a9b44abbdfa6a72e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:56:25Z), 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/USLD91761625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d51fbc75511f57d97c91c0c2797c1397034b793c5996a4790a70d3fe322bae. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:29:55Z), 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/QZTB22439624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0e5d5cf4d31c9b91f204d1d87a53ba00ac669328ffce738d01f0edc6bd071d. 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/USLD91761853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd27099e011677dd6551508ea0015245370991b1e1399756d56651aff5fc847a. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:04:09Z), 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/USLD91761854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b75bcba30e2da1b8ba27474874bf784285aaff97618a09680f2b0335bd3175a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USLD91761856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed233d480fa04bfc787bca4e6f5a6d699cdeb240138b9bed08dff57869012b5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USLD91761857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80290e685f161d57d854acb31bf019c6892dc0ca6856de03bfcd7d67a8d5242a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USLD91761858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ca107449a9102b047e78b816e2fc46d62ef91026e225d969cf52a6a35e1807. 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/USLD91772566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7c2d37b13887cd01476f50721b261176f10d23e12c7e09e535dc11eb231e9f. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/USLD91772556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129dfbf565655d4868f1a848df15db790de49733f679887c92d185381e876f87. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:26:30Z), 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/USLD91780082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb00a4772e9d59d72a189d8aa93c8627d05fbc1cdf78bbd7e9a12bc1a4b42ef7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:06:33Z), 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/USLD91780086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeed98598c58177f8f3db4fc272ce8e461d4aa13592a126474930cd63e5bf69d. 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/USLD91780851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7cf0b00d68d6ff77fc15460d9d09e1b89927fc806c5f3e82233f8833176294. 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/USLD91780852.