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 0x4574c10991cc75ba65c2162b379d2a83775c1de2848213b2afae5858c65ae0cb. 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/e740047e-b7b6-457a-a5d1-5f23c8713871.json and https://artists.proofprofile.net/proofs/artist/e740047e-b7b6-457a-a5d1-5f23c8713871.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 0x236e5086799aceaddd40850c1ea11d52413e3f49f3f70acd16d296b8595b571b. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DEEQ71101702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446d810e8ff76534224e9b28a84718a681a969ec4bb3c218ab27b02890161754. 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/DEEQ71101703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09e0016e7ff76b5f2aadb2f4b4c7053710c925beced414e2f8a7ada0a72000b. 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/DEEQ71101709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f66d2d7c80c6ccfe1901abe574207d4db4b5a51f884277649c5abf714c5451d. 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/DEEQ71403901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1322b43f126948813869efb5549252d649272b90853e67a9b6bdad38a1c597. 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/DEEQ71403902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397660363971fe7efeabcd7b26fc97eac0355d9fc9b7438e4ae32833f605f416. 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/DEEQ71403903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6782a3821a28fbee8bbed135149f151d902ae17349159aa737b11f6e44c4aac6. 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/DEEQ71403904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb86d41cf53e2826d4e7a05a450c27473fbb57fe5ddb46cc2c919986a9683379. 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/DEEQ71403905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7665289d7b33b4face3da63deb84444c988e7c1c664d3fa2987e91bb4c6634. 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/DEEQ71403906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3528fccf442e4e1e16b9f408a7a41d17463e1e24df93c65e9ad0765fa119085d. 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/DEEQ71403907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab7238fee7ea79d3888ab3c42eecf8822181af10f8ca7617ebcb054e0a018b9. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/DEEQ71403908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f95bd5cee5567efb0ce3ed083db1df61ed79283d22ba86ad34e30703d591660. 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/DEEQ71403909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4dc28441835287de9f8ce4278efbc1211046613ada7b616b50aa9a06f60877. 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/DEEQ71403910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291b82c062ee8ed9c15d54f894f2040ef5925228c3a713008cc63f79b4a96cac. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/DEEQ71403911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5ddc82164a676dbfdfe82f6a1ffb10a3573d6541e71c8a82672238b63f640e. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEEQ71403912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad90ffaf8229bd6d3f12042265a5e9ccfb0387ddfeb0e876c2c125e4e2f1fc9. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/DEEQ71403913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeaff2e4f8abce84d177aeb9bef508d1d12ef530f9e898cb264ee6668b0e436f. 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/DEEQ71403914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48f1b34cbf09f55427ade5f70320ee4c7f20f284919588e443d4072d9383749. 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/DEEQ71403915.
Jazz Di Mezzaluna - Smoove Remix Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02aefe9342289d247018bc0e0c1cc0fd983e323df6b83979b7eb1238f1bdb0f8. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/DEEQ71403916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b8b21067c5c6133b0425d40beb43c15f970c3cf831a5f080ce20383eb4fa37. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DEDW91800887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1196074919b4bf5573fb54bb790b853dcddbe7641bf4c28839cd6d4b76d036ac. 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/DEDW91800894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd69ddfc8692903b549f68e9cd61f5b3106f50d492c9cee019ee91a920a76ef0. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEG320704561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f08903aa2297f765247f121fe1b289c0c1737845fe255c4f1493014c272e98. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEDW91800931.
Cowboy Bossa - Fab Samperi Remix - Extended Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423cbae3dcd9be63f200bc33d4e41d0a7177f47da51a8220c93da494f8c8647c. 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/DEEQ71404905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d517e705ae287d4ecbeddeff984ad60aea94b5b5134c262a102ff714b549f91. 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/DEEQ71404920.
Playa Chica Tarifa Vol. 2 (Latin, Combo, Boogaloo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfda242b5822d5aee7402d831c4892b375f10bbfcd7a43b2e5b9e6dd0409f7d6. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ES36B1730111.