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 0xb5845d21b777b813f7100727cf1792133250ddbc15d4c83596fe7da4820a8558. 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/f34fd6fb-9cd5-4290-a6d7-45fcd86041fb.json and https://artists.proofprofile.net/proofs/artist/f34fd6fb-9cd5-4290-a6d7-45fcd86041fb.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 0x7505bd15adfa0727849f2f5ff6b9d3fd311f3b6533999cff19b4f0a9b34d5a71. 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/QZ2J21506103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d9bccc77d6a003cbc33cc58cbbe44a6f6b1bf5770ee0c5df601ceed37c4b91. 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/QZ2J21505821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874035e8df5429e581c8ed29e377043da395439a35f138771ef7198fb03b5222. 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/QZ2J21505822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51638bc693982e60ecb5e646a00b6ea7047da71aa17fc7af834f20108728b2d. 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/QZ2J21505819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5eb666bb03f4bbbb58a0682c50cdc14b5cce2ac8cacb04695da386fc238093. 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/QZ2J21505823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7e508ff37888faa1a95c427880e173fd7991d7ad6af60c5286dae13bc9d4be. 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/QZ2J21505824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe699f5c6a75f34ce25c35a58efbe7adfa4a0281fa5d33ce46c99a9dd1067314a. 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/QZ2J21505825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7410a94889b9bc2766a705c73173c7b8de3bee6856b3652ce60fdb00103477. 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/QZ2J21505826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56fd4aa07461016da7567e7685dbecc2bf7aa68d0754c3aa078f707c9e2a8e2. 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/QZ2J21505827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36972c8afb181017f9e3b84b22ab9ddf2692396c8427290cb3bd6817f7f9518. 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/QZ2J21505828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f366d626e7514d801d93331307b4bd31193e3d982ccd96f5263751a43299db2. 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/QZ2J21505829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c88436ebab62490b36bb39a22bd7607577591521fe6a618af9b213a22f2a71. 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/TCAIM2471250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c4bf1e17358c95df43eaf85ad640349f77856f94f68d7a0539ba07402d1d6f. 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/QZTV32435116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b26a4d9f68d9201acd813dedf1f1e1eccaf72be5aa0339bb3e8f468dd606cf. 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/USLZJ2466330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfebf1056892a1e0abb9c0d96ecc27756793bf520eb283f0580328a4efde01f. 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/TCAHW2498162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9166e79305c0fb00d842e96ef3f24d505254f5c3024aa9b2c68d72ddcdb7d345. 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/QZXYG2307840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc681720892dad63690286c23ba9a7d6257665d7075fa2b1de13320b2dbbd9dbc. 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/QZWDE2398778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6cc81061059ab5ab6bd449b1126be604cde40d9df8c4d0de973fabe8f09a47. 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/QZWDD2341291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b77972517461047a34fea39b3b8dafc4d87c4cfd140d014a1f568e002932317. 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/QZTRX2394287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4d9c57a0ec0a7e477ce10f833358bb8c82906bb603340bc0cd7e4eae8b10fe. 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/QZWDE2258679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51638bc693982e60ecb5e646a00b6ea7047da71aa17fc7af834f20108728b2d. 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/QZ2J21505819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4bdb9f7c3b05141a8d8051ccca20b6dfb6a7df4fd17228b1f788e40b69f5a4. 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/QZ2J21505755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f872bdfc37c0960c56eb16f2140457ee8679314103a8fef0fca67408b9a6f35. 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/QZ2J21505696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfe17da76cba96bd90869d90f0e4ae61c191cf86a7d09d93be03dc442cc9d7b. 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/QM6N22233919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a656ec62c6beaa97e8ef30c3d00e4744b828be2ee14714767758377261d51c. 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/QZ2J21513786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6035ad355b7a46643f5d5ab8ac0036c9a953cbc308ef8900f39b16c3f7e8ecf4. 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/QZPLS2137300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba2a3174bbea729973665d540fb6b4a177ae2580aaa4625dec0acd98320a2a4. 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/QZ2J21504885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37aa2783fa3fb097e40f4fb6d1751e79f7312cb19578c29586dd10de891dc91. 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/GBRKQ2177842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9996493845f86947731b19f9c08372f336fd389b8ffdecd8aafea46bc7fc55e3. 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/QZ2J21504256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02163b917e6cbbf71203bfd3a840f48f0af07679642d83bf79b6d09996529226. 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/USLZJ2190801.
Kings And Queens feat. Lexico HT, Ch Gedeones, Eva Nova, Fanny Plaza, Tomi Perfetti, Mr Yeison, INDYFOR, DesXa, Ada Betsabé, H-SUFIA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8874c8898943d3ef591b5ea505884d66970131fef9094c83a90a9caa61f59555. 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/QZ2J21505281.