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 0xc802a316cd9fa155952fad21bdc5f4a06d26f5eb8060e8ecfeb13633469d9441. 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/908f2b7d-4579-4dcc-8877-527f4d9dc102.json and https://artists.proofprofile.net/proofs/artist/908f2b7d-4579-4dcc-8877-527f4d9dc102.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 0xc09692877d72834e94befa2d9994e78253ec95a6cb29a9807c6f0c8c2d7880c4. 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/BC9MG2300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53d8f51796b24c25d56990699b6d83379f897de6fee6037811b75fe5025bace. 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/BC9MG2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb795315540fa86a7b7263d25a0cb0469d257785a53d2ae369744a27b61f8ea2. 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/BC9MG2300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24dcfd486c199a75de1a1ce24baa335d1ffabf8c575b37ff398d7ec17f5b095. 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/BC9MG2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1206a7fd3b6869bfa906c80ced7977b6368618c08ba735456cf2549b682101ea. 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/BC9MG2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4de16e3559ce3d7440703abc42cad94a53d364ffe67b439d764aa0fa596d84. 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/BC9MG2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849c5b383781b78ffdc4c9b1f89850b8f0caaab1a7a122f2ddb4dd07a5eb6e66. 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/BC9MG2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98a7bbd6c82ba4b07cbead07dd32727b7b8292436824402daf48fa8b84f720d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BC9MG2300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b9019b0a870e3a4bcf0de80b891af6b5c7e77c2d295303489ee05e911713d8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BC9MG2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a96672804d3b66db946b1bffded94d823b624d27cbb34bd8088ed46aab2855. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BC9MG2300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef08d42c3505668861e64b9a9f222f65b44cd34a5248f5775cd93dd9fec17ce. 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/QZHZ52184469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9005b617157087880d1f73387a05e009ec4883a8c2e61a131ba80bd76f905caf. 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/SGW502352844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4767f81af76909b79635c8e4240022d5babf64cb3f2c73373b082f6640c76ae. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/BXSW72100271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37153e9073833f0d249438d84d8cc96089e77444af6d64a2ccac1be0baa63f0d. 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/BXSW72200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d1caff23dabf88aa09961b01632a05de159f4de33951b80f519a243349766c. 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/SGB502259771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7993867b05a546de88421208e479a2eb26d22c0dbc357de4838aeddde99fa27b. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZMZ92420996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603bd4ccfb274dc7334483c377c418e69b3b8c51b0ea2b72bccd88a407346f51. 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/DGA052488530.
Vai Sarrando no Cajado Que o Mago Vai Te Botar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db489ec08c03b642902b3329b4a5c4a07f335efc769aa26bc050bdfe76637a9. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/BC9MG2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d7c50064ae9d40f4c090852f9a8a855cdf1edb2be0dcd2f898c301348852e4. 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/BC3PG2401205.