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 0xceae9c6079cc5bb633225eec8ce64f76d57538a1bde7df44b7fab9e9929b346f. 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/47b22743-3ec0-4cb8-b56a-c683080359e8.json and https://artists.proofprofile.net/proofs/artist/47b22743-3ec0-4cb8-b56a-c683080359e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x49762ccf16e086c2b96f33db1b9837f112246046fa2aa8eb710ac1e6d53bf54b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/NLLL91400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0499a232c32047cd6ff20c0b799eb1dfa91b219a39938592f937b0308e7f7c. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/NLRZ82200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3063987b714fa7175f23955aabd5d4d65274f4e5e09090e506c59a1dc2f5fa. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLRZ82200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff6d30916ecc8000531298f513c83f8b11022f82a6f2a4536a899e4dd5497e2. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/NLRZ82200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa278872ad492ddc5c445526d7349b176d2e67969ee23b42c68142b503752a066. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/NLRZ82200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02eeccc2c6ea1497467d1a2dac2de6f16741f60219ef29836f26f5c3f9529987. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/NLRZ82200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c780e9d511b0757de6200bad9be0ff4f4a1d82730c4c54fdd7ca6f1936689d. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/NLRZ82200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6682fca5e7cf9d1290624fe8a7aeb922c899764ae50847b007e4271a384b3ba2. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/NLRZ82200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b83b6ec131fca88fed6762f7b0ec7148fa0092b2b761979262a7e5d0716d35. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/NLRZ82200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a9d8c822886b338c751527ee064600de4145d8f029e6fbe5fcd0df5cd94817. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/NLRZ82200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f939b4c66474b20b8de97fcbe3f436632a30bdc119550ebb9d868997406f76. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/NLRZ82200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70fb440e5bc9073898effd572eec739650ee5b4a1a1a9d0e987c2d6c23c57ff. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/NLRZ82200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd286d4ea6257b51b4a4827cc7c3aa292b38399716d101b9e1715e1917989d8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/NLRZ82200027.
We Gaan We Gaan, Me Va Me Va (Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa07dee4d791b2b22db689198e2dfc7edd84abed11a7f2400471e4cca4f08a0f. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/NLRZ82400002.
Ik wil met je dansen, Quiero Bailar Contigo (Spanish / Dutch version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609f650d25556fa010b9c41e836f02ed1e78531ba89e08f354ab6704d28db782. 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/NLRZ82500050.