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 0x9c8cb598109754a164de2971bb7025b6c353d0fd099c003f14fa5daee61e7d9c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e365ced3-70f5-46f8-a924-c5b2d6540b15.json and https://artists.proofprofile.net/proofs/artist/e365ced3-70f5-46f8-a924-c5b2d6540b15.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 0xb1dde05dc4e33074b382d1db20d81d3eb7cca09edc7fd983fba0c9276311eded. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/SMRUS0051435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff1e77afad8cbd72909b5e8b0f07addbe88807b0b15284c45975497bbacb22b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SMRUS0052259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed663bbe84ffbeb903848727efddc0ca4b58ca508821653a503072ebd11d385c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:03:03Z), 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/SMRUS0052561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb4970ce84f600a379909748bf09cee5ea0173730b177094537ef658c93a826. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SMRUS0056044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b08154f7a9e915e43b54a6c2c54212caac599566dbd2e5feb314be5d76b0d1f. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/SMRUS0058908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5d8711448876ae7161978239defb7fbedd5648743c6ec54191a9a4199d9b6b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SMRUS0060882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc53a4135df98dbbfe0fea59d7f1936dbab2d421f43eda862d373db989cdd03. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SMRUS0062725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38423a23a6c96ea570a6129240761d8fad842c3090cb015716521ebcff317f99. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SMRUS0064378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dbc2bb29cb664b696af494db5b36988c9018e009cb74fe3e641ce614e42aa0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SMRUS0068986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63e20d5cb846ec9af24cc3e626558399ebef1bb6a9923e5f8f0a5856eeee4a9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SMRUS0068987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90837ffcdc7a1877fe8825b7b21a1f33ad922d1aaf85fd06534a9abb773ab753. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SMRUS0068988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0350b1812dcdd778e6cd9d113d53526add61004ec8af910c5bcc9477f2e536c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/SMRUS0071926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795ab995d42fddd430700a0f605b8f5e6935d6afbf58f32302dba4f50774792e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/RUA1D2419440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3559236bfd63d0e862244419d42c0ee0787e1b80582a5da6b9f7f91c2d9f6f. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:54:49Z), 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/RUA1D2419441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefd5e86c9912fcc2bfaf6e1181224a438af18f73d8a03373030baf1f830ec5b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/RUA1D2419439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11806c9c0c862cafd7e6188fd9341dbf6a0e0de541b18b69cb0d48a5b3570986. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RUA1D2419445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e386a3498c2aca25565235445828d5732bbc01ec1a817ddcec2c30ce6ea72b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/DGA0S2410093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb742766637e1026ce6ec1cd1a23bddc5d2ef64086393b11200796dcc803071b. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:33:29Z), 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/DGA0S2410094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8484a3bd6a996b97e0745a86d41fd511ac205caf3d90d4652f8d4543cbcca2. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DGA0S2410095.