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 0xeae81bd2865cfc461a57e37257bc416b4312ed90e1b932a378e07c8b050affd0. 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/193e853d-1471-421e-9326-c8989e89bc5b.json and https://artists.proofprofile.net/proofs/artist/193e853d-1471-421e-9326-c8989e89bc5b.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 0xb34413dbef8441bd804d305b9f413bf64c9eb7ba4915d20427493d9510e0762a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/UKK761812001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128de61a4a183e17554f293b18ba3f2fff132e6e9b118163220f6a2e0a55be18. 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/UKK762024001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d43d095b77032abf48193bf181f390d4266dd09e6815539ebb441e8790f5764. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/UKK762032001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333b1fb1099e5cb36e78536848ef412be8607e8890d85b74c9f96bfdaaa49ca8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UKK762032002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0291043f021b48448cd817ce3e2b455e65ac65d92ce733e0883ec0eda601f2. 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/GB8KE1758111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dc327dd45700ee0eb22c663d0a57abe5e7350e2a4b54c42a906376475aa701. 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/GB8KE1758119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aef79f131ba3169b6cfa979cf1ef83b3e9a8ba65402a5fd9fa4bbd3607b0f9a. 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/UKK762033001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116913f8b6078a767a911149de09f119de8b8f86738c6e893a523c01637c09ca. 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/GBCJY1900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c9fa05547cced2624bcbefc35b581b3f03ba41214690271ebdd60bf0f03376. 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/GBCJY1900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b54e2cfce57debdc126f985b9fefff52a079ffe83e965f603afd823bafdfd32. 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/UKK762136001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdc9daa56233fe320850a58f0f5cbd1272b1775fe2ac987f4549a37476c22d0. 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/GB8KE1355295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6946bb28404ef6ac4f409ad52f15ff4c282a2c30985a2b71bac8887f5638be0. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBFG92000158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d353070dbf9882731ac7058955388dd18b2231459c8cdf7143dd5acd9b3cdf. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/GBFG92100094.
Welcome To The Jungle - Gold (The Best Of Jungle Cakes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6946bb28404ef6ac4f409ad52f15ff4c282a2c30985a2b71bac8887f5638be0. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBFG92000158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebca6a1d3ae6e32bc0f6536690865a4c4605478ece410c8142cce9bf81867cd8. 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/GB8KE2326715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0255431f59e5ca9a451e36fd1d514772c03dde01b00aee687406612ead9203d4. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/GB8KE2326716.
The Wolf Pack - Souped Up's Greatest Hits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ce6c4d60062ffc40ba8d008cf7f076e3b1d59f143f825919c09ae9fe44f246. 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/UKK761812002.