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 0x4eeb486b3990c1d3e5c75decd7cd4b53d1983a31e500f3900d68a623aa2ba7da. 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/feb7887b-e1d2-43ab-a64a-26e111625efe.json and https://artists.proofprofile.net/proofs/artist/feb7887b-e1d2-43ab-a64a-26e111625efe.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 0xf885fc2c6ac9ca425ae000f5187b6e39ff2be616f8e3cc35ca3dbe9799aa3131. 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/SEVSZ1302005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5794319b9704423fffbbc58512dd61e878c4a7f3abf132f01a1d7366921a43. 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/SEWTC1400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56febaa1095fdce57819721ad5ec4e1217467221bcf60452b4197326d0c3069. 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/SE3XZ2200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299ae750c26c7e1139ba65a92af830d4ccc30333742a0e83d932cfd4b92a42e5. 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/SE3XZ2300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5480a62b0daee9663655d9d8ceeb91ab6a9d9a1c4e8176f625afb627c99de39. 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/SE3XZ2300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb362a2b1ac9450482e250c56cc27c2c02d6a3c3e4f916937d35bc7ca932e90. 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/SE3XZ2300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d90fed040d3737c79eb1ae3d6950042f9edfa098cecdf319f0e5c4c048529b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE3XZ2100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04ebc6eeed8bdedaa39d6de4f3b717ed39e421948fbdab13eac509c0aad792d. 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/SE3XZ2100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15780456484f5c74eb55de7d56fa16522e916b8b4240cf07c533018524870aab. 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/SE3XZ1900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15443b14aae175779f869dd78556cced87c15a5060298255605fe6f4f5e52359. 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/SE3XZ1900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eda3662589d0866f4a3e3341e31e756f2150b3dfb4ec57ff4f0054d0297e530. 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/SE3XZ1900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d89ffa90f08d18edca0e667a0e729de79b240bb54f1e3ea82b82c03f959bec. 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/SE3XZ1900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3da30aa2155956ae78fe0b8bb48aaf734a457615fefb56ce872a77be7212b4. 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/SE3XZ1900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75436d60ae1b20e1b6c4988044a371a6a13e485fccef039373bbf58780d1020b. 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/SE3X21800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c1b6a1d19d67f40460c68148c4a265b6bd15fcafd8f267ea6d24dbfa193435. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:21:08Z), 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/SE3X21800203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7796776164fc09908b56cb5ab73938d5974bbe03f0ac49c020fecc35fad2575. 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/SE3X21800208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7469a0f8894e80a28680886dbf50c24ae88800d38648fc4134232d03d832c3. 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/SE3XZ1600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ff594fbc85c40f30fbe823d9efdc52740728fe9683d2c480f156bd383de2f4. 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/SE3XZ1600104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0255158d06b24f5334e5fbce1c9337cfc7623a6d8b9d1b2fa5baf311f355b2. 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/SE3XZ1600105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2f738e6c44ac582c6a9de3525e2d80d46029fa95532854b88e3bd60f18153e. 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/SE3XZ1600108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c663d63a1517af57e6a41290ea92ba21e544befa0eb5ac822145f813e5a8925. 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/SE3XZ1600112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7dacf92739d32dde0b717716c10cfaec8eacfc642fad5499d7fc91b764ce19. 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/SE3XZ1500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91275933900233114383407f7416d93e279b8b9483b2d89614d1ea1bf195ff0. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SE3XZ1500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92ace4e10b710c2decdd20d0418806c4d2b3ee8a58d109b01d59aeb3dfc5276. 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/SE3XZ9800002.
Rälsbussen till Årjäng (EPA Remix - Dansbandsrave)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d90fed040d3737c79eb1ae3d6950042f9edfa098cecdf319f0e5c4c048529b. 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/SE3XZ2100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04ebc6eeed8bdedaa39d6de4f3b717ed39e421948fbdab13eac509c0aad792d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE3XZ2100103.
Friday Night / Du kan väl ringa mig ibland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15780456484f5c74eb55de7d56fa16522e916b8b4240cf07c533018524870aab. 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/SE3XZ1900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3da30aa2155956ae78fe0b8bb48aaf734a457615fefb56ce872a77be7212b4. 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/SE3XZ1900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1172b8376da4ff1929350bcfca6aa644e53b166e98552ab3650045540e177ce4. 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/SEVSZ2204001.
Varje gång jag ser dig - Ullared - EPA Remix - Dansbandsrave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f5f7415a73f3f8c076ffa0065b037c5e46ec3f5b27d7bae32668b38ab400a0. 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/SEVSZ2201308.
Dansbandsmedley - J.O.X EPA Remix - Dansbandsrave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58d8f66c12c6c6dc6f004cbbedc323498e0200d03a0e3cd2739e0bcb28be336. 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/SEVSZ2200801.
Nitar o Läder - EPA Remix - Dansbandsrave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa46c71e3f79d30ad215c59b302f4fe035f7d9e16f6c747ed9cbfb3c774947a4. 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/SEVSZ2200205.
Dra dit pepparn växer - Dansbandsrave - EPA Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446f6c9c3379058edc47a3e662913d15d93f381b16ab03a7813ea1b7bde7e73f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SEVSZ2200405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa148b41432189339fd9b9a5bffe18a9e4edb5fcc3451972616c746185c416b0b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:21:22Z), 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/SEVSZ2203802.