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 0x8376620db5a4ac5eeae499e8ba86c978b863cb3684d15c75d3351b88d635962a. 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/5bc893dc-030c-4b4b-a6a4-ee5fd04f984b.json and https://artists.proofprofile.net/proofs/artist/5bc893dc-030c-4b4b-a6a4-ee5fd04f984b.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 0x3c625a54b6d4a413b7ae51b1cd282e1321e073c16369310473bceb1c4fea22fa. 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/BEN581500355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0f253aeaa16a2c58e86fbceb333995a891af9986022f522fe565840e880e08. 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/BEN581500370.
Scandinavian Swords IIII: Atlas of Visions Pt. I & II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de6e1713a359f6c4f0edab5cccf26eba796437b2b0aba8d91aa08eb496bb308. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SE4VM2000303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc643a640afa46081216f150fcb9a9e9cf2e70ddf69c501ed82ba23bac1a5519. 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/SE4VM2000306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fdca7f80a2c295e75a2512bb106dedf4cb647e9a9f43ca60ae2a89617493d3. 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/SE4VM2000422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0393348eb83a6ea3db75c615cb3cf2f94cc2362c626b62729617aac29f0ec32a. 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/BEN582200805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4490e58c2b1f6dd920cd67526ca852c7b7148c4bfde340019df1c2a17ddc774e. 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/SE4VM2200601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24890c355013933d573145c5532df560311173d97680af3cefcb5186a73f1d67. 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/SE4VM2200602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc71aecabef7b5e7b920cfef5707dd95e30c0ac33030b5d68638ecc192294e2. 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/SE4VM2200605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992b65b1b0aaaf660574e1b234aa69476c3586bd2237af8353001b8643b5b7a4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:26:09Z), 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/SE4VM1900806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4f6a1c3de66e67833acc79fcba6be9beb01c38853f5291555c0930c084fb25. 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/NLCK41030750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f850dc2274c5473b3abd77efed1f022f572a6d0b9e4891ee00b182a2f3d97e6. 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/SE4VM2200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a51362849f62f272fc212c9fecb955483f27ff35ec1b125f2688642b32d719. 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/SE4VM2100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78cd6e3cf12d8cf31e8ccf9821d4cc5a0fc3826c735d4b0ef121dd90a4c2ae8. 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/SE4VM2100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29d4f174d8dc8d88738214949ccbdcf55c7d1e4bfdcbc3604ae7ea1ab263b42. 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/SE4VM2100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed4877214edc8d6b81ecdfda4afc5a1c3cfdc8924752229afc3ba543a3c055e. 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/SE4VM2100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c94c16cf11321668af27c060055add286e8a37c0d2cf9eb90bf35c41dafc326. 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/SE4VM1700804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9587eca8ae7e92ada0bbdc2f932ba801e14c8f6f9f6bcc9b02b1c673480f03a3. 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/QZ8LD1998172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3765f5c62210662664563463d19305decb743b146949cf98ea53a6bd7ccab47c. 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/QZDA41907066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20f6c67f551018d6ddca4c83de7a29592edfaa9a719fdb8c64cebec50bcce47. 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/QZDA41907067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd359f5023afd1c5e91e48f9bbedbb68ee1408ce59837d117c8a840132279ac26. 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/QZDA41907068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926512b798210a4b66ea0b7e76f9c6cbf5483a41b28068dd75cf34e6e060706d. 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/QZDA41907069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc75abdaa4186a6d880ec21864a0ff3157072c63b7cd50a4901871d18b08652. 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/NLCK41027666.
Movement Strobe - Evigt Morker Interpretation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4895d364a73e45e41cd784afc04fbcd65f5d81917bf4b07dd3a5674bfd02e73. 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/NLCK41027669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11d4203911657772ff17edf889378b3e5fa8a33e780585d592c8067dc446e85. 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/NLCK41055576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342057817c87b843b9e95b57cee15e1d4b095f8a35ef224195a30d2d49694570. 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/NLCK41055577.