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 0xea0ea1624471b374df2a9d73f0980d20c5aecea7ea34080e1a526fd3bbd4721e. 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/74294515-bb37-48d6-9d87-b0eb250caed4.json and https://artists.proofprofile.net/proofs/artist/74294515-bb37-48d6-9d87-b0eb250caed4.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 0x601b1c345976dc587566e17984e58a5e6c58aef19757a0067c99bcd4d624d9fe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLM2599365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5066e30eb4c4bfdf4f0318a5ada965771cdde83d3db7f4142dba53f8aef6b9c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BCZ582500218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a299fd8c59c2e61263015e60aa64335a9f66c126be524bae7c940e89fa0e7e. 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/AEA3A2180337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8be7d528258990ea8476f8ea21b5530a9c413ec6b31f7e44477310ec485b12. 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/AEA3A2570242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cd18e5a817ee24409d41708d69deeeb8e3f73021da4bc4b45ecd2277d0bb85. 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/QZNJW2518902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6f4969318f05e054ec3d7d4fae3ad1180c28947cbb509d79beed8b1a4298ab. 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/BC3PG2501715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c321ba50dffb892a37249a6b47bfba88ea419c294f8900da6e3ced4157f8d3. 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/BC3PG2501296.
Você Não Toma de Coca Cola o Que Eu Comi de Piranha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e7d5d6c059f37dcabf24f30d1762898c9a49e37fa155deee17561030446a78. 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/BC3PG2501072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4de126c8784d594eacdc74bce3bb252f1ee160443b6f09cc0ff7c1094582b20. 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/BC3PG2501018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a5e17079f87e59ba118d2d669ae9f6e62eacba7ac10e2a276ceee88b7871e4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BCIH82404222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27102012d6840285048acb5be419afef296e46edd3213cb44c385a6fb08a9f95. 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/BC3PG2500733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adc2728b2e8a99c5137c1f9414bc98fcfbac6a9df57243ea7605cf6e9b69a19. 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/BC3PG2500732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98b51bcbcb707f9d980808488fc575e33c81764249fead619042608ef3efb92. 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/BC3PG2500410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cb01276474fc3afa595b97e6cb28107745dd4386f21ea1ab12c2d6d5857dbe. 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/BCIH82403779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c7815aab5db9ebda71ebbd0825596a4e0769487c823ce667003a72654dbec6. 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/BC3PG2404703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ce35504693792ef7705b4b9256b9f6530e64289cf92b7abe92ca3e5f665dce. 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/BC3PG2404704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc63dc2e92b8b5c3ff9e55693907dee7f3581ed55eb6f3ab0883a3088d8327d. 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/BC3PG2404645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16905ad28b2afba832769e3883d2fbdaac341ab7d69342b96734ef898fe6c172. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:06:35Z), 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/QZW9M2414543.
Automotivo - Encaixa Nela, Com a Parafal na Mão
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36591f77ecfa6487520c758de225683108413c5751a0b3bb3ac4ad9caf37c474. 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/BC3PG2404170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf15dc8eb07c722e8cf8fea5712364f7e951114e3de74abb4999856b622e116. 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/BC3PG2304911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b3966000ed4066753146298f00fc6d6d38b1744440ca8af93a915645a9278b. 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/BC3PG2304243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe544bb212b45cdf1b6e958e3c3ff43f958f75294830d4ae183cb5c90bcefa1ed. 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/US7VG2347130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b3f7dd39340d05d09e7ef3412fe86a1a1677d49a280ffdc5289d3f61abf4c2. 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/BC3PG2402532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930a735f694a573af80b8b18035b5f87d2426656f2f4e6b23d23258ffc6f782e. 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/QZTPX2462211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5fdbcd615385aedca78da8e9cffe8c98f911eea1fa1dad0927be9494ad5ab2. 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/QZW9L2362847.