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 0x0fef6241a962ae7038ff4387a1b65e05155d883af22f4b70dff0166387f604fe. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/870310e1-26de-400f-a925-056822228dd4.json and https://artists.proofprofile.net/proofs/artist/870310e1-26de-400f-a925-056822228dd4.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 0x2eeea913bd220a3a4ac17f4873e2e50f11fb9d458575d45989c107eba70f4925. 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/TCAIU2444977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4994bedf2fd297db4b6bcf15bfcbb8419a950a60dc9679308a547d28bd6d70. 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/TCAIV2444983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82737fa4adebb79ec2a1acd9585045f74c9e0d71aee7909066bdc9c5eb88d1b. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/TCAIU2444963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569fff5678cdfa516b69d606238addf52c37a42ba54015259f65e366aafc29f2. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TCAIV2444965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd249582394299817a271ef6b44bfc97c657ba8847831743cb59b6aad4e7c2e. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/TCAIV2444967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d3ae38223c3eb5a59f2709884665a41449c24ed0d68bfbeb952f511f95cd64. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCAIV2444972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4266b02f0cbfd383f62910298e5191634c69899be469f8de296f0f2bcc28fc3. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/TCAIU2445011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eafe61cf9743b83eec1bcc9f2238b7df1690d40928b68c1f2e43201fd7c0768. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA2P1949771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2e070700b029e344fcef46d9fc2207ba3b8d274e4da82e7a38371debf4db1d. 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/USA2P1949772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15ec32c3d76c40a3fdd8d22e5abb227d706abca22df75d6b10c33ed21702aed. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P1949774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa3d291b293b92aa68aa2c2d5931d7d4ca7c7f8a4e024893923a7aa1db6225c. 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/USA2P1949775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82033d3504d2e9572337fdc8f9a72008f0b43a57fdb87aa2be55d4b6124853f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA2P1949777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf76b38cf494188986b50913c6f7f4ea81f1436596f3d66265165015ff8cf79b. 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/USA2P1949773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0543aa14a19db2779378e1e501d74d656b25b65b57ff45586f00ecc68ae0e8. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USA2P1949776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2409b4af034b4e4c5a6dd7b65ef360976d9558345ead6a8d8977c59bf36af66b. 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/USA2P1803554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf341269f74c3092613ec61e4e946a2bbeba5246abb3579ce255e72ef5f95800b. 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/USA2P1803557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebf8b4e269703992ca62154ac0902efcad87994605c3075b014a6652211af6e. 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/USA2P1803562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3177b13446f5287dc066fe88e9e8d5c001b702216239fc4fd2ecb250d66788. 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/USA2P1803560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923de1ec537fd015a8a023de2a1b657e4279b2ab8d3221f7a89bf353bfb37698. 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/USA2P1803564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04eaa5fbd4c5acc5045db8cb61c935702b4dcba5bfdc47dfb5f667beec8618ef. 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/USA2P1803565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9826c682e0fced6c3147e54a1b6cb99dfe40730e9b52740dd1b240836ddfa9. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USA2P1803555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b80a22039873b389a19f6f09922c610f94afe4ad6f708ea0da49add9cc427b. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USA2P1803556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96789eb3ccffe047d9c8d4da3647dc11ba167c096776e0ea6453cdde5559441a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USA2P1803558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4610589a8c182cd0227fb4fd3f7843ac7f5b81dcee47cfc50ea24df5c259d244. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USA2P1803559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacdf053d0e20f39fecb45991816bad48467f1003dbd9c25a54f169ddfefa1b0. 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/USA2P1803561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ab54dd08306528d4a782b822f7d2ffe85fd93ce879c9a5805937bc852e902e. 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/USA2P1803563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1329f61c8f097e55b3138934c17c0d0f1a97890cd8f6f599b335200f6f79be93. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USA2P1803566.