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 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 0x8119ec867b9cc24ec526c47e3e7b1e9e046dc2406245f7aa035088b4f4dbc9fa. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b17060f7-f881-49fd-abcd-99e9f07db81f.json and https://artists.proofprofile.net/proofs/artist/b17060f7-f881-49fd-abcd-99e9f07db81f.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 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 0x98ef017a2aa309faa4dfe61b5996d5eb8adba598367feca74b19657ddc5a4549. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ITAD81900057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc0c939f140226b0ae0b5fd32b48372ec12630e2223b83053e2e760e0d0591a. 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/ITAD82000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad13e874b3c8b0ea5502f98fcbd95a09342c52c071586f7a4dc2a25c8e6bd8c. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ITAD82200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5a460a006afbb37bf48a02dc4a6b9d7881366e3a24c0a346d6be058b67bb42. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ITAD82300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0c5a0ff03fa917ae81fdd399f59135dee06971c8bdf8520234726a669c05d5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITAD82300124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ef017a2aa309faa4dfe61b5996d5eb8adba598367feca74b19657ddc5a4549. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ITAD81900057.
House Relax, Vol. 7 (World No China) [Deep and Chill Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67deba841f92b9009ade8ad18feb7fe9c9e5b983c217b768c5d0ef2d78a48d0b. 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/ITAD81900114.
Deep House Vibes, Vol. 5 (Chillout Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ef017a2aa309faa4dfe61b5996d5eb8adba598367feca74b19657ddc5a4549. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/ITAD81900057.
Like You Do - Alex Barattini Sensual Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48ae4eaee063cee48af5e5b352949b1a9079b8b334b8c9a62f5d4878d26a750. 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/ITAD82100111.
House Relax, Vol. 8 (Deep and Chill Selection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc0c939f140226b0ae0b5fd32b48372ec12630e2223b83053e2e760e0d0591a. 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/ITAD82000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67deba841f92b9009ade8ad18feb7fe9c9e5b983c217b768c5d0ef2d78a48d0b. 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/ITAD81900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc0c939f140226b0ae0b5fd32b48372ec12630e2223b83053e2e760e0d0591a. 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/ITAD82000111.
House Relax, Vol. 10 (Sunset Deep Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48ae4eaee063cee48af5e5b352949b1a9079b8b334b8c9a62f5d4878d26a750. 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/ITAD82100111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad13e874b3c8b0ea5502f98fcbd95a09342c52c071586f7a4dc2a25c8e6bd8c. 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/ITAD82200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad13e874b3c8b0ea5502f98fcbd95a09342c52c071586f7a4dc2a25c8e6bd8c. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ITAD82200068.