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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da215f4f33af97e2bede9e748993a21942f527061a54dd391e98541a31a147c. 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/b3c73856-20ae-42b8-8b5b-ce41233c25c2.json and https://artists.proofprofile.net/proofs/artist/b3c73856-20ae-42b8-8b5b-ce41233c25c2.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b706daa7665af130d20139d8adc1448744a7fb44f7da99bf7e13e86e33d787. 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/COF010500357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3df9a63b379418f934a2b6a4d247062e1afd34b2e8df18925530c46d832f0e. 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/COF010500347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751bd49395daa2da9f46ed851c4927711ccab4ff2d6b13562d0f286ad0c14f33. 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/COF010500352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84dd2d302a3daca831aee6661a62aa1d62f19aa83f8ded3aa76986efce5c7bda. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/COF010500353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d20d9c4ec540ea41462dd066a82887cb6b9995983996a1b7ff6f3559d71881. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/COF010500354.
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 0xc707dbc2c5ac73f009507797873906760324ccbdc3fdb6dc53f6ef2adbcab02a. 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/COF019901448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b14bb8b0d9e7d596f00b17902b10ee425e0e1ae7dc077f07c318a9764ab4dc4. 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/COC011304219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7abd1de042abae81865a671616ae21e0a6dbb637f6ff83998a58cc49236c7c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/COC011304306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a422a7a5ab8c97c7117f5e5fea0b616f6cb17d4ede4389390fd9ef3cd6f62e8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ES5022101887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7e1514d516bb5af5bcaf479fbe4742b9c5c4be3e828a92d088135128df6641. 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/ES5022101888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b7d9d0de7b390f923781faa0918a8c608e835c3512b81e029afc032745980a. Chain 2 (Bitcoin): anchored in block 959147 (2026-07-22T15:43:44Z), 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/ES5022101894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982d5573296d74888167826d1a0ea125cc5584d49f13ea3f2da6c37fa9f90bfe. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/ES5022101886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5818e1ec1175062a9e008768af268cfde4219c764615e6b0a980d54801eb13ac. 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/ES5022101895.
Siempre Te Voy A Querer (Remasterizado 2021)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201105be1ad8603a395316ee7f234ce765cc29cc804405a035af5dde251ed478. 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/ES5022101896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2582281161a092e50f9147eecb0c8400ec7e75b51f5d8885091ab09ec2e4da. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ES5022101899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbe5dd6a61fa8233ed5bf42fe5796135132728481f48088eb7802fdc8c42852. 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/ES5337410283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9df01d181c3f95c2f336aed70746a63621cf0a5bd0e318a873bed8d3ffb5cfd. 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/ES71D2300399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8b7a41927d274f46c42ecfd316be01ca2617e3cd2e0e700956e029fae504ab. 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/QZW9L2301552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde639988da8a9b45286370fe41bdf518e79cf72f0ceb46f46b7eadb26022fa75. 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/NLB637800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350bc9d88da374177e724a75dc3dcb4e8613248cf304f3fbf62c2e34749361c6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES5028000276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211e71050aa1322e42a1a10ccd3b7f31889b38a52618e0374361e38f2d0f8d54. 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/ES5022101869.
Fashion, Style & Music (The Sound of the Catwalk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9fafc3e8577e5a58f8c01df70c5f9c518f45d29b453b872c2f68a8cb042a33. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM21404934.
Recovery House 200 - The 200th Compilation Anniversary
WMC Compilation 2017 By Simon Groove, Vol. 2