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 0xed10c6ce4da994765f0816999a14e126c233c81a4be1305523be30ca891ab3b2. 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/8aa58cf3-7013-4a96-8542-f4c4d18e3b47.json and https://artists.proofprofile.net/proofs/artist/8aa58cf3-7013-4a96-8542-f4c4d18e3b47.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 0xfeb733ced87eb4ef27e51c177e61e9b63c9b47a657af101081f5d4b62e5474c4. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZHN71976427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1e4c690070aa5da3146d7ca9e3f103ce3e8d5093bbf5690dfa00daa6800989. 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/QZ2J21505278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5224449c765cbf74e5f177097f9eba736fcebc8e936a016749873c0bff5f991b. 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/QZ2J21505279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd642827c2c1dc5692a502fc18c003ef8f7496e59a21a0af78065e53f3b5a16. 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/QZ2J21505269.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff382e631ed2abaf8d1a1b0f85d38f4616beb7225b4f4609b5adacc2a08b3b34. 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/QZ2J21505282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61b334e264ce8e74ec0ea49f27100325fa4815f7d888a2d9c53210bdee35c70. 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/QZ2J21505283.
777 feat. GabrielRodriguezEMC, Madiel Lara
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8259d631c83fda133c63d5af2363b299a73b116e2ee4497c5f5ba711cb6eb3d8. 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/QZ2J21505284.
Me Corre feat. Pauneto, Vianca the Grace, Borrero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32156f7c358afced725886667e5e908cf9c335ad64d9a435b284e28645e7c2d. 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/QZ2J21505285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d88c8a6ff26836b53875ecf77b22f0cd3bce9f4218e18fe6cc15c108b8d4ef. 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/QZ2J21505286.
Frontin feat. Niko Eme, Temperamento, Wolandia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169754df4e2501e361d9bf330c0b82be7a7f0113f011e142c93b192076d439ed. 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/QZ2J21505287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c563ccd9372d6b5b825a9d3271fa38cf91eb3a6f4b6a597372d07dd5f576ee. 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/QZ2J21505288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9528297418143921d3da907a4e558b0f54b7bfd393eb4703ca33e9d82d1df445. 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/QZ2J21505289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf6e63a37b6987ef176dea5bf47aaef7d6a5b79ee16c088971895ba16372d23. 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/USCGH2164785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cf68482d0d214dce06d3c69a3f3b5b942e07b97b38f638623ae555713962bc. 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/TCAIP2471587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799c65474edc3af952a72e17a1c0bc7fd743d8b9e173fb67ba680802b3c4a24e. 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/USHM92074199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a47a6378cb5dda4b156b4f89194e2fde8e79aba4b35e8cb6dc37f903cdc850. 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/USHM92074201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03989c2fd1233ba680f8743d402f22f23d77320225eaaa69b8bd18c413f08f3. 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/QZMEN2227704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2195a0f97838b9e6c48cd4c3341d8e15b79250e8d1db4d5c3f76e356b4b6e474. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZSYP2104178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ef8539a8d53c28abd65907ee56e817721bcbea2360f6fd1e6b841f01c6f340. 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/QZS7J2172097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5219489a9e678af79030bf23d55e5d7a8e584edadc5110d6a56ea7230c51e29. 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/USHM22122438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa485fea1b154c0a75bc2c0ef748f5edd400529bafcd9a6e4707a9b0e6bad50a3. 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/QMGR32247320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf33a73b6ebf6744b6b4c42268d1dd8434fe27b350023553da8aaa94d76322c. 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/USHM82155508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25997eb7841343908047319a36d80f031fc40deb6987861a883eb560af5d2bc0. 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/USHM82155496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d72b04ec3cccabc6ecb6e1720e186e2732260ece94806cc3ef48aff95bf1ec. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USHM82155501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27351589c20212ef0048770091c4e5de969db1e3fd9a932fd89d675df33d77b1. 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/USHM22097039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6307b5c869c78a58a1d156031f0d0cba333ba67e0f790a8a933846f300e3a1f6. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/QZNWT2126913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3e12013a09e57168cfb12120b55e05725b80c99b4ff07751854a330fe06087. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZNWT2126921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3148ae82c2001a906099c88500dc0638178624b68fbd2e993f2bf02f68f66b66. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNWT2126922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd291fab2f5005f83be9befda176f5220355e6028427b64888b20971f2bd60e. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USCGH2164786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a97bb742494b690bb35718f1a9d4b36da1e642c1dbe80cf2b1b1242ebb9997. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USCGH2164791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20e5f7b02febfca89326ee027745b0d88288bfefa31849ae800db2b65bcc41f. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/USCGH2164802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5004ca969090c7664e7b8f707d08fa89e746e86bfb5b7473946029c9bbb5000. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/TCAFR2176129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108f30ff499d7be21a493ba4c45a558a988774f5ccd5d6aeaf0902e9157ada1d. 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/QZNWT2212219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47911ec54c9074a2d1081eceedb107b6658e55b9f7c2e73848763f3e7174bbc4. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QZNWT2212225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5b4d650360de2f23a262cb8d13213981904eafc77c7f89db77468d97445d8b. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QZHN72078190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf35ff58f5d85544f8cb1e2fcc31366c59574d8fd4935037b055ed29afe13f76. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZHN62097812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5283f1505e08965431f557b4ed915eef10a9aae8b9004fc1b02934a998fe05. 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/TCAFN2119482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c4d664b690c84004f932530fc4cd88992e9261f135c43cdd66ca627e26d030. 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/USDY42262085.
Mucho Gucci (feat. Fanny Plaza & Lexington)