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 0xeaa56c75a604f1f99f5105988766f887df2a267a2f39ff54c38f8d10df8dba4d. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ac615df-14f4-401d-9570-79c9d6349d12.json and https://artists.proofprofile.net/proofs/artist/4ac615df-14f4-401d-9570-79c9d6349d12.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 0x12d5cae0604115b6faf1579bb66bbcb0c26f8dce3b155fbf7c92402d1826436f. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/FRX282524778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb6d3bfee2a00eb72a12f0f08bfe0ddd026e94fa3627a68273d745e62caba42. 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/FRX282524779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9edbf3023061b2717e24b983b02bfc9453fc722db172aee1479ffc902e9b98. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRX282524780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f097522b5cf957824f433d11160af38ca7efb2fcf62fa2bcb955e4020a5b96. 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/FRX282524781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c3cd004076e05b56970c6b9c834da9c4c0c20d2c08164f312bf7a2bd6dc5fb. 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/FRX282524782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81892ff390702bcec71cf781e3c04da5bc32769451429e2f80ab976e260d3ddd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX282524783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297d339e471e59cece37bc6cca994642bcdbbeaa71c9ee4a7d5dc7a5793b80f2. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/FRX282524784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963cad50d21c6c8f9ed4b58b5f4efa262cb82101736e05b4216fbf788542fb96. 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/FRX282524785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3022516e2433ee3964c0a720f8d4e1191e85f468ac61b9cd1e2a108408fd9f. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/FRX282524786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ab28f9b99c23e029897da69a63cbaca19cf6b57ce93d94fe59c06a334ec1a9. 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/FRX282524787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248437f8903023cc3f37b252883f81576657310cef6e7e95bee7b28bf86ed488. 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/FRX282524788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b14bf1646ea152405d756e29022cf6080b09db89661000860e952901265585. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/FRX282524790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5791ff632ca6f6941144319746d6ae21a5cc6739e9c883be364e95551cf5020b. 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/FRX282524791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8259ba73120566c8f0644c48cf56f1fc929215da8de1e8d13500d3c3565c94. 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/FRX282524792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166343d6c390ff6016d0c0d1a7e8f770744db1710dc9f248c5a150fa70955ac0. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FRX282524794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd8b0f51118e63433ddc8c8f5336ed7b336abc6fd3a3fc2b06532e58fa49f87. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRX282524795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef02ddf3d454b1e0d477d728a38bb60731ad4cf9b842fbee047ad9d95528bee7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX282524796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfede25f7de3524cb23a6711286b0373f90cb2f20a43c1793cadda15c1f312644. 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/FRX282524797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3bf213e3d7f437f7cc670bb014875c42518f049bfee84ccbe08a6423ecfba5. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FRX282524798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850933db0228ce8a3da5048aebbf310776874bdd42f10f8e9b8810ceb3ef0b77. 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/FRX282524799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883986417c03ebb50ce437b10602f6945e8c8f51bc278adf4adbfb8e145d5545. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FRX282524800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b56e9f1f64cf2b763d6675a407e00fbe63243cd6a225062aabf13e90982067c. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/FRX282524801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3b0abf2e092b89c558447845d7b16422ad22b87c2629c6fca6dad681ab8215. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRX282524802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fd030fba0c452a7a29427a40ed88415415a2d15befd3c87bc9de0013bde659. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX282524803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4caff0faa84d3e255caecccb7db2d965381b24ce76c1222dbb2a5645bbe37b. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRX282524804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf768c2f6580d5472da9f4c884d6686b6d51f59f2521a2cc8bbd23d3d3f6e05. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FRX282524805.