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 0x050a1fe4d87b019182e940af51622d0f239f248a23dea2e91430b0fca9ce0848. 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/4581f3db-dae6-4700-b9d7-9224c3241a47.json and https://artists.proofprofile.net/proofs/artist/4581f3db-dae6-4700-b9d7-9224c3241a47.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 0xeb6eb2a4e8f9e959c97d5d01fdece8addeb5f2bccbaaadf2d9592a1f4cb4c20a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ITAD82000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaace42a750b5f696bd166becf1b4fe64862492e22e74cce82601dc0f57d066d9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITAD82100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd45bbbbd211354a443ff800fa44876fd00504494762727b1b623042c5a66114. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ITAD82100115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c203f55f31a040e32fe5818394976c07c61a14d8015898db17ed3fd16d01acd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:30:48Z), 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/ITAD82300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5889be3a2c1f0100bbbf3c114766ec7218d8c8ee48e51b35fc638d7e09b0d047. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/ITAD82400052.
Deep House Lounge, Vol. 2 (Chill Out Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79091161cec51197d8cc4d2346166f8c4c3bd037cfb89ffb2432f43f9f548f45. 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/ITAD81800095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33734a18e91a7232b8deb451d8710acbe11b03f7234827207f8462f854375435. 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/ITAD81900009.
House Relax, Vol. 6 (Deep and Chill Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6eb2a4e8f9e959c97d5d01fdece8addeb5f2bccbaaadf2d9592a1f4cb4c20a. 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/ITAD82000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313d4661d6bfb90bb49b4a58a65080756507a35e10468168b8ae2cb9c2083f36. 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/ITAD81800067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a9fde4ea8d501d5acea00e8eec969d3b41c4b2ac6f41284f95ab32b3bad47a. 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/ITAD81800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd560c28c69edfa72089814894ff59027d0510142d3dd942b5df3f41aa4ec4fc. 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/ITAD81800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa296fd2ddcfe1312870eab30183ab3e77a8d01b905685ece748757f3b1c669. 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/ITAD81800066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4feb3f736408736b17d6171f14c8414d5e50f03b52b7ae51ec2780b63a6156d. 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/ITAD81800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e15564b1d9f7a765f82e987b8d3fa279eb95412ff6a7e41beda97bf22bf6f0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITAD81800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd560c28c69edfa72089814894ff59027d0510142d3dd942b5df3f41aa4ec4fc. 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/ITAD81800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4feb3f736408736b17d6171f14c8414d5e50f03b52b7ae51ec2780b63a6156d. 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/ITAD81800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd45bbbbd211354a443ff800fa44876fd00504494762727b1b623042c5a66114. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITAD82100115.