Sprinter can refer to: In sport A participant in sprint (running) Sprinter (cycling), a type of racing cyclist Sprint train, a group of road bicycle racers who at the end of a race work together
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 0x92a7d8868333f6eb1caa751d475e4d6e41fca5e264b04a2bdbbc85ef4b4495d1. 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/4e12e368-2c7c-4470-a49c-2d5390fd61c1.json and https://artists.proofprofile.net/proofs/artist/4e12e368-2c7c-4470-a49c-2d5390fd61c1.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 0x61417e02bf2c915d7aa7201ad5768f9045a5d03c86ef95f77d4f4b6d3bf0e46c. 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/FR26V1405545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6669abeb9400c7f4920a50383501aa188172ff57635ff87ce6a59914683d2809. 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/FR0U91601604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e841f886cab7da4c9c0e3c85137e9a4762fa3566d039eebf3be7f014c92282. 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/FR0U91601608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6d82e4b7edc495c10db89fed543b5cb8c5ba546442c0c295759e4b2d150d3f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR0U91402702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496b378b7b6490c193b3d77de2f3ae9ef481eb240cdfa2f13a9488772b14236c. 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/FR0U91402705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2a0e90bce3d7e4d9f985998fe17fc2f9f83cc24cd28478a7bb738df43e08cf. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/FR0U91204474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dddc3daf58d3801879128147bae3d58daaae68e3ea29498a2b35e304e27a9e. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/FR6V81862836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281a77596392d6fec9772f26bd2be28fc68b69b1cc5cc1b74fcccd87fe3de554. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/FR6V81862841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c76a196cbf5b5df6e76fe4dd6c9fb60c8a7285a5a962d20ab33e9dfd0c0bec. 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/FR6V80198973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcd51a5440c2ec76ef5e885f391d4655a4e7468476ddced2034c0db8f07de8e. 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/FR0U91100299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22934cd216feca09e553d96c9486778e8cdd49a8b102930aa340d469bc713e37. 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/FR6V80474339.
DEMI PORTION x SPRINTER x HEMS x TUPAN - 2nd Round
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094971d6136b63d8b12c516de21cc2ae01217ddb66b175366c2db3fd3fd0c6e2. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/FRPI32400610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094971d6136b63d8b12c516de21cc2ae01217ddb66b175366c2db3fd3fd0c6e2. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/FRPI32400610.