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 0xe9281d73a5b81eb4fb4467d23ff620ad1c80f5d29ea55e5c54057c4a768fbfb8. 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/662e2944-72bc-4e1f-8aa7-e475770d7049.json and https://artists.proofprofile.net/proofs/artist/662e2944-72bc-4e1f-8aa7-e475770d7049.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 0x3af5f6671e283303fbeb3b2b1cbdd91fbc66c6ee6be26ad812896e77dc3e5b24. 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/DEWM92200333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48da6b677364e0cc0a508085cb989ba4b16bb15ac1ea32de10624ba35ad89fb1. 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/DEWM92200510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5d59556d2f9903d0b4022c279e825b783cef13afde19fce6a6e9668b82b827. 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/DEWM92200519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066148cdf457fdbdec7c2a031fd76cf30f0c449b16198b1f7b58d795eb41d14d. 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/DEWM92200434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b14b062ee54839b57a81d2ee9e8db3e028fc8295964d7a63b8b19ae76b80d8a. 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/DEWM92200836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bf838c700122f7b02ab00f54b31a6a1ead291ea562d58381ad4351d75b6a24. 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/DEWM92200854.
Don't Stop Believin' (Felix Harrer Remix)
Don't Stop Believin' - Felix Harrer Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73940fcc920fa70d017edca7f8d91572d09c2308becb75bfe93afcc5546209ec. 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/DEWM92200910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a4d737d0827db098f1fd758f868927f74ea634693cd2fcb393e890268bc198. 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/DEWM92201159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012cfac38ef71e6f06960d26568cc9ade148107bba8ad668023e72a15d915849. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEN062101095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a1971bbc02ce44a213c4dbcb23efe34cdcd1876d1e127fe0475792422e8072. 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/DEWM92200834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05ce87c42cd793e82896f0ec29ff5ea94072d6c471761431ac8ee8037480a07. 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/DEWM92200760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ff3d84b1e8e11052609b0c4daeab07b5afe5a8162b8d9b48c5c69506796902. 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/DEWM92200479.
Don't Stop Believin' (Crystal Rock x Marc Kiss Remix)
Don't Stop Believin' - Crystal Rock x Marc Kiss Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a8295a0b3efde15be9efbe45a1c4d61d4dcda421481928a6641b5cf0cd8b65. 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/DEWM92200409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5af49a9406442182c78596d7f20a98300be7d752548c96b1d9067908d604df. 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/DEWM92201085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86851c31572261415cd5f799983b76d9615d549227849b2a42276064c94628e4. 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/DEWM92200866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe344762909d1378a4bfa6add636574e063f68a1d86e70dba6926dd75c4442974. 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/DEWM92200814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d42a9bfbe94131968b9eea17dbfa2a8686a4f938fcd4d456c8267b81941899c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:00:29Z), 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/DEWM92200745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cc133c51b3406029d37523294fbf0bb2cdd0c0da471c93044c23150489c91d. 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/DEWM92200678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb287d817e0fa0a5a745646b8c5194e6157d44b1b9bff19c0e0f3b04c88b959c5. 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/DEWM92200594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0773436cde0a3be8a965b0784cd13d49f293b88b197ba24dbe85eef7d6489f0c. 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/DEWM92200453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd70b98175926de4dac40c4f3286a84b07a402f1c9c98f0ca2f741dfc728bd2. 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/DEN062201326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4746ef07d88af41f7142ef45d06a0130e9a9305500c88be69514a787396f5518. 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/DEWM92200321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417d016b6b9723477d279fd6604bb8ce08e931331d98aa4bc7272e903964fee7. 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/DEWM92200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6865701db8baf37ca0fa72f5c9cda5d9200b03018e3220effc50a5cf344cea4. 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/DEWM91900294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2695775eae36f1aa7f2be44ac4e3cfdbad9d523d6e8ec287d992eda12b01c6. 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/DEWM92000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ab66e2b1209e2bbe258145cb83e7912dbef2aa1dc7809cfc63ffc00d75390f. 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/AUCN32100212.