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 0x99110ebb588bd51a4562c52a9e8128bb817cfc26750280cf1e692083484a8bbb. 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/6accfbcf-15ca-479a-bf3c-c6232d02fbf1.json and https://artists.proofprofile.net/proofs/artist/6accfbcf-15ca-479a-bf3c-c6232d02fbf1.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 0x7fb27b5ec8c6b62d86ed2d378584cdea633301ca78f39f87c18971e2b1a13f2b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLA508400501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4270807503ee849640d917a78aaba9a36c335b1e47096c924af9cbc395150bd5. 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/USF067302010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2955c35eb2fcd7b14cf9331e9a113f3f5c93c8ade3cabfdc504af6b0127bd790. 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/USF067302060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ead9d19faa44951a53518e234bc4c4af1deb630a420afe1daa61868a5491cde. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:08:50Z), 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/NLA508000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3789e8fa0fc353d76f223b8cd4b4456d78e8ce5896a6a6eee055fc739ec051a9. 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/NLA508000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53242cb7657c251816b0ed64b8ac251deee83ed51af4279306ec1c83b3f6f98c. 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/USF067102120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5413d37e30a8b2de9d17f715bd88368492016f842d5f18c935a777782c4d3c. 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/USBC19710141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a681ef3f298fff0b0091fa4e2f48825e0d5397522ade6303f05246575f17a3. 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/USBC19710140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecde2cc88ad81bfbe7117fa1674931784be3b67794d9abf480789cddb341714a. 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/USBC19710149.
Lights, Camera...Music! Six Decades of John Williams
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adc08cf3b9cf999bf27cb1337a1592c43cbb8f72e82e9b305c1a8409ff24704. 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/USZXG1704001.
Devil's Dance (from "The Witches of Eastwick")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34c550f02bb64a68d757a96e4fb72974e17cad30d67a822040c1cb2592a9e77. 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/USZXG1704007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71349046bc3ec0bd981c99d86035453072a7b897416a063916810333d63a6f76. 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/USZXG1704008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05b16e8d5017c4ec243ac8b50fed3a93adcad1f719d346f712fb75ad82583a4. 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/USZXG1704010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb85a1c2a04a6f09fd81246df7a1ae832576f3b4410cc8ad5de5b338d450738. 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/USZXG1704011.
Suite (from "Star Wars - The Force Awakens"): March of the Resistance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8abf3677be562facae181c13fa059323a1d818db21a4f8d91d1e35d0675d0b. 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/USZXG1704012.
Suite (from "Star Wars - The Force Awakens"): The Jedi Steps
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5eb9406ed71b4230964deb10e46741727beab4f087142eaa97f169cb5a0e26. 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/USZXG1704015.
A Boston Pops Christmas - Live from Symphony Hall
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50cce91fef7ec6d6bb80d3358c2915f52061a98f7bbdaa4ad2623013ac25453. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:02:18Z), 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/USAPL0900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa954b46a676df69585e6de8a2814b5edcfa2f07cf3b95a860e19865d490a5386. 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/USAPL0900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193435dbd7c2aaeb7925472a46d9116e7c0f395de8195c09d440786ec7052aa0. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/USAPL0900108.
Oscar and Tony: Award-Winning Music from the Stage and Screen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1a0c939a6a820df4ce99950546340186418b94f32f27be0cd2f8c990a26899. 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/USAPL0700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eae30026293828f8f37cdf342c8670abe613ad7ad26f859db3ecc9893347d75. 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/USAPL0700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431c0f05dc8db73d209b72f03d3a345703048b138e1b16261e4e4aa3cd8570b1. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:00:52Z), 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/USAPL0700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08a77b19d3cfcc6e812bd4065cff332c10b1ea838938086c095fcd4386366fc. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/USAPL0700011.
"Chim-Chim-Cheree" (From "Mary Poppins")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3c757b5a6ac4942a630d1e2c3e23fea26e37aae7ada354f10e2c5eadecfd84. 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/USAPL0700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e76b63ed0e3ac922ce245ada90890abf888a3f87ce74a33802a671692c6f7c. 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/USAPL0700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7624b53995a460b336f4640fccfe135c7b0e8d08464c9c981c24a170f6fa7d5f. 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/USAPL0500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ce0737d3e041d562de3a7778f9cdb18a6ddbc2e823c5f24b403a8dfa28a722. 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/USAPL0500012.
The Carnival of the Animals, R. 125: VII. Aquarium
J'aime pas le classique mais ca j'aime bien
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a0e83e1e90f8ef95bbadd7238a664712e94475234743b3883cd4d65ef314ce. 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/USBC16200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa2e148c7e1071f3756bac94bfa539e88adc13a2f2fc4f3bc3e9619dfcbfdd3. 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/USBC15600102.
Ich mag keine Klassik, aber das gefällt mir!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa2e148c7e1071f3756bac94bfa539e88adc13a2f2fc4f3bc3e9619dfcbfdd3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USBC15600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a0e83e1e90f8ef95bbadd7238a664712e94475234743b3883cd4d65ef314ce. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USBC16200139.