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 0x1679f21d7ebfc979f4d7aad8feea04b633ee05dc5deee9a42c2c4bc3554a2eec. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76e8792c-5939-418f-a966-b7b11ce7b2ca.json and https://artists.proofprofile.net/proofs/artist/76e8792c-5939-418f-a966-b7b11ce7b2ca.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 0xed507a8a9bcf9f508ea10dd5b141b91e7ebc15ecb5f23b55711dc7557373bfb5. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZMHM2266048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93257f01221c206693cd18f53b1531ed2fefa9f26dce4616ff1efcf92acb8a66. 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/QZTH92330632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75a73b5f598e0ed8b9e06ecaf3b9fefad579735dc7bbb26b5d66691d6d41b54. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZTH92324910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5fdb0df0da43767b3fc8617925cb76b64a1240b79ac4f1a6906c26afe85b2e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZK6K2569086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d65ab320aef8aa50fd126ad58658bb03ff02c618685cabebcc2df93973ca6ad. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZZ7M2477317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc5363c1910a9b7255210cedfd1a2bd3c053269b0f1f1c3b7760b3f95ee0151. Chain 2 (Bitcoin): anchored in block 957210 (2026-07-08T18:28:05Z), 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/QZWFJ2402680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed80e89467554b535eab2319c158394a90f8d4c1fed45ad94b150104424e7f7a. 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/QZFP52390760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb146c27ac56c2ba738f7e9a4b822c57b825f5c02c9a7dcff2d92564a8d03ab03. 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/QZHN92381615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1fd9e1aa189cbcecacc54f36eafcf54b5d3abea39f4a46bdae2e362616d2c8. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZNWX2256695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e6c7cae23b307f4c05b6ae4eb1a5fdb52d663ecb8d49c35c2cd5672a57ce36. 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/USLZJ2430107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6d36e1bb594b9dcd03374cfb205528e39df97d943cbe9e54bfa292303af12b. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USLZJ2430111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0153a1452e89a17379c52dea03ee77bdbb87a2e5d3c444f00ed84ff53432e62. 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/USLZJ2430114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ae8a520816017a98e35c3970581898580be50ca35bdf1c658c7570d98a38a5. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USLZJ2437049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa06862affec827c68f0786a557e14a41d684bc4e423d1b5a7dc189db2b2b60. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/USLZJ2430117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1faa1e669a91a37205f9b3f550ae9dfd12b550e74540e28afa8759fc6260734b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBRKQ2410458.
Falling // Interlude - Mind Splitter Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbab621aa8fb8ae6bd5f4a41b9fc4a5a19fe00e6c87c8d0440952f4819a121c. 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/GBRKQ2410491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01492919088c6cf29c8334618c9ec2b80e2b2bd90e11dc7ba84642d81b8cfd19. 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/GBRKQ2410498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092fee4e958c9d5616a2a9e288130c07d9258bac3f023d2d538627539df39495. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBRKQ2410504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7307e0300c3274ca4e21267048bc3dc060d8a301570607efb17e6d19c38a8aeb. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBRKQ2410511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818d1850bc80b0b1450715a534b99ace6fe905abc30361c3101c12bff993de5d. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBRKQ2410515.