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 0x8d9b4c39f78f2919fdbfaa12054412e064d502108d2bd4696d163f560d751807. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/076822d9-f492-4cf3-8fb9-22d983821c84.json and https://artists.proofprofile.net/proofs/artist/076822d9-f492-4cf3-8fb9-22d983821c84.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 0xb43497ad10eb6dd4cad627ddece1845ffb6da4d62e4a042e433b65ad4d67d74a. 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/ARF411900354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f15bcb692d214971bb14ce0c91ca66d499be06d8c736cc1041804469c439b50. 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/ARF411900345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a5b6d01ca9e9c3ce7e0f47d0a22fe857f7bb1aaff0fcda146dfe8f03f31151. 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/ARF411900302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c723742f4ec4547df15acb861e7079d1108e637f22ea4192e5cc1ce7f0da5ca. 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/ARF411900346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b67f09e953690b3790f8eae44d61f2a67852ec100b665b1007b8d13f1bdba4. 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/ARF411900347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4667b826a0e0155eb6e135706a9afbebefd53946535a03c02116e0bdd3e4a153. 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/ARF411900348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3542edd63a51a472fb90ff43f9252e563449e3805960007b125241398347f782. 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/ARF411900349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd37407e9c2d82130b64d12583381483b341d93a5558c5d1fc5d39a7afea717. 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/ARF411900350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec26e672192ce2aaa344812b25bbc7271dafeb315463b85ff8f80f40892cb4d7. 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/ARF411900351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf4bc75ba9853e236275dadef735fe6068bfbef8ac2f681571275c89012f1f4. 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/ARF411900352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbc7d40c65dbceeb48944371abd07701816570257fe442607bb7c43232c77a3. 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/ARF411900353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43497ad10eb6dd4cad627ddece1845ffb6da4d62e4a042e433b65ad4d67d74a. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-07T08:27:05Z), 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/ARF411900354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8447735693fe87b01fceae9c82a89fa393de3aedbc76aac9f3a427d81a73e694. 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/ARF412500152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b2834e33c3efe21d68623444cd7a4090d99fd54a6337fd045e7b7917637227. 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/ARF410801156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988272c6dc99ee28be58cad6d6e84ad451b4374a994966e3e721be1ffb65f162. 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/ARF411900148.
I Still Haven't Found What I'm Looking For
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1acf48c66c11b3fcf0e4c8c09746d86a3ad661744488612dc39c575ad6dfffa. 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/ARF410701470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0844f404b77663f2cc697c6a6f7c5c70e546efd604c68fdc28abdc94fc939be. 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/ARF411200381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ba9791390bb5aa2ac1f4ce8c72e329284987f2f83bb3c95f60f7342f5e3119. 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/ARF412000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098674df68f12e52581af6eabedaa5a806f059c78d2660da224a0a7dbd8991fc. 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/ARF412100304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb708cf6d1952a657d1ab71e498e050da85010f2f5c3581fb7b4033a2131886d. 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/ARF412100126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d459b25df542319465458cedcbbd3acaad6be58db64cc070140faec564d9cca. 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/ARF412000273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7faa5ac21de931e2ff3b5dff8ac91daf342ae6009f21bdbc8abe33081bdc505b. 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/ARF410600335.
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 19
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf0f93c36536230739ab2d26f340042e13d72d590bd7959a374e5708dce706b. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ARF412100094.