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 0x662ceed549c09526e7dc1f3b070aa97012490b6381e0a44f75923184f9d65cb3. 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/f239c2e8-147e-451e-b95a-139f701255ba.json and https://artists.proofprofile.net/proofs/artist/f239c2e8-147e-451e-b95a-139f701255ba.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 0x2d1bdf3f2e55cbaf096470d40f49f1b7776d57c9b7cdfc75b1f8b28650e9051c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEH741648292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf27302d9633a78ff5236bcfebcdfbd9bd3ea27728abe4f8c38a7a29a581b46. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEH741514582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbf37050204871d871a34039a894578e98329cd004c8d6d1e14452f6b48d69c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:04:41Z), 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/DEH741313868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5b0d48277753c4b320a834c3cab7e7d93579f3a58caedc6fbb8970e5145c57. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:57:51Z), 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/DEH741648300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8db629f77b2d16706c3217cd4639e8f22d0dee0c55fa64a623ac10be0e04e47. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEH741819211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d123cf19344b7ebba5f25aca380ffa8a4592021117eb4c85bb6b23dd825dd35. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEH741903234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3ac68643fd3406a942e9c8cb9e39fabb1db2ed5e87cad898b579b0e052c7d0. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:31:37Z), 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/DEH741819212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fa59fd655d3b47d1737462248ac0977390ce8c23e091add2d33528d06a1e31. 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/DEH741903238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910444418221476437ad823a1bfbe2b7ffb96fb7e92306e0cb4d0fbd47ad8187. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEH741903240.
Don't Break My Heart - Vocal Extended Another Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c123e30e81ca608bc446d61add25c6bd4f63af760c910f3d36135c85341824a. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DEH741720074.
Don't Let Me Go - Vocal Extended Another Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e55f75bc58e2d4560681c21b94294a8ab6a1904aa76bb447ceb0b8a1e7b036. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/DEH742000867.
It's Just a Story - Short Vocal Dance Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36beca57af32ed2b55477c574de8fdc00a0fcebad163f6d10aa972e8c01ea478. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEH742174900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f94d8fd4aa9aa2c58324d338b3ea3a9ad186c7ae251ba3fcacbc42b291b0e3. 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/DEH742326276.
New Italo Disco Top 25 Compilation, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2d308229cdf188008a07ecef2e13897a5b69f0f3696cced299716552226c86. 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/DEH741603029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfacb94b693a747bf113d0f4ab0c01fe604eae9efca5dbb87c97f8ed8b4f3c7. 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/FR10S1640561.
Italo Disco Extended Versions, Vol. 4 - Italo Holiday
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a96f901cd0132b5ee755e1f5876a1cfdac33f50276ea9bef26f27aca86b883. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEH741603063.
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
Italo Disco Extended Versions, Vol. 7 - Italo Holiday
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3fa9947636dc65a7f81bd04398361500dc0ef2811c499fa3ecc737415cbc0f. 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/DEH741701772.