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 0x88d1566a297e7e239462cff5cdf48496148d36d24f6e43ac6e5de238c3d1ecf6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbc4ac9a-9ecf-457f-bc73-818fcbb1a8e0.json and https://artists.proofprofile.net/proofs/artist/cbc4ac9a-9ecf-457f-bc73-818fcbb1a8e0.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 0x934e3c15c07a5ccf83832a1f25dd013820c3ef1867bb022b89b13ad35874f1e8. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/NOX9X3453402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2aa2f35c22974b60810272dfbc0cb49e682015fbc04fcb859b99ef524c972f. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:19:47Z), 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/NOX9X3453403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7408232bb9a787ec8ed8d0d813c0f760636b533ff70d977b7271d15bd6868798. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/NOX9X3453404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320753b64a7a4b2e12c49344669d94c552e48b8fc9991e1413a4253d4076d7e2. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/NOX9X3453405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663e5cdc7c8f1b6634151cb42ddb69f945bff978205cd8ac7b74ae35ba0b9bc2. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/NOX9X3453406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e975597407f407c27322a325f1e0f7266f96f49153b716b50f5457ebbf57a6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NOX9X3453407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104060cad34821dee4bf3e82a3c869d2cc7887491ae3de1680cad7cb6e8070a7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NOX9X3453409.
Tårar från himlen / Teardrops From Heaven (2020 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958464250521ebb73211ab42eafb03396319ce0630b0d0e046a05fecfe6f51c6. 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/QMDA71596746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e348761864b999f9b84ef3130f3738698fea5fd652acfc8f68e27e8ddde677. 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/USWD10524351.
Känn en doft av kärleken - Från "Lejonkungen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fce77147eca5a432034f0dae88dd44dc89853d6151d53bbd3c29c1dd800d29c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWD10524352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7641d52782f2357167cdbbecf219d62556370c62f7048e669a7417f80cd6833. 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/QMDA71564150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211d6b503e54972f5958aaf81dce130ee2844351c757726a4d36ba782c0eb6ce. 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/CHA911400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f90169a9c4068e4703afe3b377daf5e023aaedbfb4fad7479df4cb398d548ab. 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/CHA911400081.
The Lion King: Special Edition Original Soundtrack (Swedish Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e348761864b999f9b84ef3130f3738698fea5fd652acfc8f68e27e8ddde677. 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/USWD10524351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fce77147eca5a432034f0dae88dd44dc89853d6151d53bbd3c29c1dd800d29c. 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/USWD10524352.
Take Me to the River (feat. Frank Ådahl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b9299ef3d6394353a1483524bb0a8caabbc7e812ad9d7f44e51dc4da83f3ee. 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/QM6P41441826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf736d169b8d4553a6ccc4f96840872527bb20c180e0928688ad2aefbc0354b06. 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/QM6P41512366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdcffed3cc58a378891088d10e5d7ef49e3c2fd29270f315051822c6530f285. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/SEVVF1803604.
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 0x4ad663724d237e7dc91ec34363cae7af4f994ac76f898a75af9877d6866d295f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NOJRA0715140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f85aab1cb5bcba2382154e4b0e9997c04552b50e063afe23bb1d76e7084fef. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/SE45X1800102.