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 0x3b1391b073c14dd3ec872e8dafe26fa42964779eaff0fc7c2d53fc5483e91912. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ddc39ebe-925d-4f10-8346-dfc49c69e5d9.json and https://artists.proofprofile.net/proofs/artist/ddc39ebe-925d-4f10-8346-dfc49c69e5d9.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 0x75f35e931807fb6f9b3825f1645481d247966102cf5325da365954a54473ef1f. 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/ESA122448693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062ff0123845a34b988c08e00942d0df28f2b683e75b50996f0e755f4bc58054. 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/ESA122448696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712a5be108859f97b803b5dcfa850a54091ec2ae30000a3d5316f1ccafc37302. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/ESA122444235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d19712ca0b05d1ee36bb218b6fa7c7c0cd3cd881f54dd000e982d7ecc6e451. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ESA122444199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73f8e65a21f4b147710569aaa7aac59cc58933291b92f13d1a407a3b684ae07. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/ESA122444204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcc12ad383acf969a486245a0931db58da8610d8e947798d00e1a8bbf6cc7bf. 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/QZNW72327735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2e0add4524b1bb0618ecb7f118edc06cb9d2cba0d92571e538157eb78f1faa. 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/QZNW72327738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a8ef38ecc3f979f0d3dc5666a007f670a49669efa9e3cc0e9a31d8ef40c01b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZNW72327739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006e1375faa74bf7df31210f2a983436107a30a98a0758a4f8db33327cb3b8fb. 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/QZNW72327751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25ec0d876b433f77136b54f30e23fcabf2188e8fefe5e4e1ac077aa53f5a6f6. 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/QZNW72327752.
Sonidos De La Primavera | Flores Floreciendo
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Entrenamiento Autògeno y Meditación Specialistas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab39f2983f7bb2db001da4549117312356cdb367c92d026c54e9a7967cc7b6e2. 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/UK6821728664.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0e8b3a6a2ea6a385cc9bb3bf5aff6042f1cdb27b180d9a3a1c02f91b921191. 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/QZNW72359263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171b87ce8fd225f5c5dd233d2becd95f5c06b234585b70e2e2612ffdae22bc2c. 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/QZNW72359255.
Chuvas De Verão: Um Dia Chuvoso Para Redefinir A Mente
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* Sonância com Substância para Introdução à Ociosidade e Serenidade da Mente *
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce617205544d07244227b5e75b52d59ec1092188e7fae8616c861c4043d72659. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/PL44J2359696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4893b9021a7289a6064a4b68732a93f4191150c5572f306dbeef4b8f8320693. 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/PL44J2359697.
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