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 0xd6e80f12001596db5567ef029f3339d31232174aec13462e0ad05ea75819ddc0. 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/46189853-6181-4bd2-88ec-0e1bd2b857f2.json and https://artists.proofprofile.net/proofs/artist/46189853-6181-4bd2-88ec-0e1bd2b857f2.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 0x7c1e8fa782061499f7bb3d8598ae907b759c526da15c5c1f7cdbb8bec7737e37. 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/ARG991042630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba7c148f3aeb2d02fb3a7297d3f0442f8303a62b19660b70072686adcbf5116. 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/QM6N22467439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56c7d4ac88f9362134e4bb677060a935376172221a1abe28b4d0295b90e1241. 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/ARIXB2312858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6362e5d2aca8a87dff8ffb3ed66a6a2677a89f0c8e1370a8437962da0b92ff4c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARAE52400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f7c79c75244a99e2e9bc2347584352e429e91b7259b625c907b5bf2f9e81c8. 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/AR8TN2400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53ddcfe016849bbdedb41815df8179190c5b9b6fc7e66630cebbd2854b86dcc. 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/AR8TN2400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d5aa1237724c963abf12dc503dec94ecc9aa319825e391ec766a89f76432bb. 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/AR8TN2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d8ccf7fc0ebf6a6f284628c745e3e47c7466c551669b76b2a02dc7663bda52. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/UYM122400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ffcb4d8ae653292251e7aba2d25d7a14c74415bb707438dcfb4ed644a52c3e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AR8TN2300400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62727bdd8b676f7d95b277a14af851af6eee8093a0791e029d991f791e8097f5. 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/BK4DA2326708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513c0ad336987e6d396fbffd9158974e40c73df101f8a712d6c4ced875eb37f7. 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/ARIXB2312859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71552df8c6b7a2e936076e67486269c03311267920e1e084e7073288ef46ea54. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UYM123000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0dbe4ec68a98d99c7661ca4ecdba204a106659af35537c17621b760479704b. 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/UYM123000701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0acaf7e578c4b063b159826211c48bea4a6696752e61a29b74cf4242856c036. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UYM122300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0468b45cd69ae5e4edfc00f945efb10a962db68a3665d3f96f718b3a980fb6e. 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/AR8TN2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ab65a900dd832d9d6da7a916e5477522868f8aace27ee7c9a954e8765497b5. 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/ARHXW2500075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1375324a3668113a6c58b136ac5c238e57ed36c021b04a7ffb8be30b8a5b87. 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/AR8TN2400289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f3e38a6b39868612035b4d8e9ebfb31492256066845760f21f6c8d564ae39d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AR8TN2400283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb260cb13017792690fcf008a9e99dbdf74f194dd64d37ba1e63f4d1712d7cc6e. 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/AR8TN2400236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cd8513174784cd895392b3b4fd6a6de134dbd4a6ec02b757909ca4063d363e. 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/AR8TN2400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbbd47ef002ec4d5a62fe4280f9787be5f2320231ef06136ecdc07d65e44694. 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/AR8TN2400184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cfc5ec1389d75ab13946e972af9a72c7efe677c53e656b35efcb98c8725bd3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AR8TN2400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151c186d0707197be4bdf2293a200540e03029c5fcb4db510f0971cf9baf90d0. 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/AR8TN2400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50169c83c9020c82f3e811f37ec663e0c2d95549757c702ed2c7b621c629e552. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AR8TN2400140.