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 0x47858e31e26ed8e98f89e0d4e4aa38d98f1b2d67fade4419bccebba430eaf82e. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aadac39d-ab27-460e-8078-c390724934d7.json and https://artists.proofprofile.net/proofs/artist/aadac39d-ab27-460e-8078-c390724934d7.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 0x55d4f2d1f5ae6ec30189492971923364558a348ea0928bbf74c8ec82ab508b97. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/KRG242000212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9c4e6842deb907ffac9075bb2263372d485ccf959e1f99046ae0371d6401e7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/KRG242000216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdd94128b6d47dc6f9227a9d96c4288b6bd450da931fcbd9681c7edc5d27a4d. 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/KRG242000217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce991011e9146e022fb3a01b20d43df755f899c9cffd77db862419ace7b48ca3. 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/KRG242000218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84330cf30880b61fd5b4c27c9a77c8f1d2440376f921f2f7845c3ccd38bf3d1e. 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/KRG242000242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84dc2c42c29931fb377ac4e46e97712e5d5d4cf0895f63d02f0c5cc3ac123875. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRG242000246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9538bfa55d12522c43a0c3539c48c8824bf68b54e3faf1163b24f3461e5631c. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/KRG242000240.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a97459671c1950b4d6c10428b2907b7473cf7ffdd0704708502965119611cdf. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/KRG242000237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfb1767265a6a713598817e08e6e733c7ced99538f1fbdd296df12422a1ea22. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/KRG242000238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c0f12d417cfec7a3cd3bcc757d3f51a2158acd598574cb6bcefe976c575cbf. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/KRG242000239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d894d6949ed4e9cd2d689a94b783b2282d51dae2c94a16125a5a8faf9f543f0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/KRG242000241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3211516cac037b4a0d7225e1f0dc68287e678f2344045a0667988cabab55222a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/KRG242000243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855fbf73886ea058df00bce6b19b3dc67022e388ddecbcb9962e5d618bbfaad7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/KRG242000244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78c6dbeabbd24ad042f1b4d4e765ed9aa67c99df862675e01a2480eec8ab42c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/KRG242000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cf1a18473b03e7e9cd5a03c9aca7c4a6fcee917e12df0d6e4ea9c09c908ed2. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/KRG242000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4add0ee47d493b88df98b007dc890967b71ba32e58ca1c0a857aec765d47e0. 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/KRG242000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b9c0ca69edf9182688cd83c5ff9888b7d36f98c8d7abda4a51a66893505105. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/KRG242000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87955ec2c9bcbc9cd4ca88b48665ddcb6bcfcb1b90e37e1ba136d3d99ca7b5f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/KRG242000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b7e4a056bf57a434527b6ba81b03cc8732123946232670bbce4996d22a1454. 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/KRG242000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081e8fe6b7ed912763ed8a59294782cd9f20616ebd15f64e101aaa1bd0c56462. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/KRG242000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd85e1625ff830a262c69b805e04d6aa3cec52c09719bca45077480006b6d32. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/KRG242000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccd8bfe524e08c83272e3e0d59dc0fed01a7108b06137d8bfafe04c0b971e10. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/KRG242000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f101edfb0989a96726b4827101dacbbf68e4d88c96fcde2e4c98ded4fa321a7. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/KRG242000081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51af5f6e6b986617a8a0b84f1ddfa15dfb217e348b006799ea99828f46cfd63f. 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/KRG242000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9818753d8a208a41fe0dbb404c5aa909b0698eb9179b3a51812b0a5a16c18634. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/KRG242000022.