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 0x71d7ce75ad78a873ab649cd983167a409d0e2be3523d30b5cd3a3193b4d0191a. 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/4cdf37bb-a64e-4c28-a8a1-71409ce75a17.json and https://artists.proofprofile.net/proofs/artist/4cdf37bb-a64e-4c28-a8a1-71409ce75a17.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 0x6ad8c2c73fd96cb611df0909c59604a3871c8a514f840fb14f65615e4f083cff. 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/DEH741921206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd67931067654fc9e53c0b7c08f39c6a6ac926c2f69e5f98882d6259de3067a. 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/US83Z2018318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad82cdb096a64fe15883223e2975b5a1b4b7e7114cd95f9b79e0d17a4a57230. 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/US83Z2018317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc711531db164a1fec0e326f8145d06f5ccd96133a799eb41ca472380daf50bdb. 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/US83Z2018329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe2e114769ea0d3736e348026c7044662ae0b0962ca688082fc65e2ef24cbfb. 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/US83Z2018311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ba13f5b40c814d9398e114b59ce108d46a37369677f1ecb1bcf3e474faab20. 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/US83Z2018337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe30d9c718afad1b8145bdbb9dab1386348c9ddc533404ac7a797e8f12a0d67e. 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/US83Z2018314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088e453cb9eef263a5bdcfe426594040f6a6613a6d03c95b462b3f0774b5e3e2. 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/US83Z2018322.
Schneeweiß 10: Presented by Oliver Koletzki
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7188dcf0b93c667ca6c098094ba395b530901283c154ac0d8a0ff1d064dc11. 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/DEEC31850114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c67e0b174dc1e9aa4c335029be3c8d4884a5b7a85d06d1f71a58d353ca7e85. 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/DEDH71800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae2817d3e289d362724286f1476acf07d896217d5a8a6c7be930c7984ce3180. 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/DEPQ61800740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9297967b9f148ef696584e801ae8fb5b7551fb75fb9f7aefeddd099428e38d88. 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/DEPQ61800742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc966cef79d2b8c8468cef1dbcb3d8cc4aad2942f7c383024f532cc783170fb8e. 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/US83Z2241675.
Ethno Sorcery, Vol. 3 (Compiled by Salvo Migliorini)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4480b0b1e25a76d638a8441c66b0915e38a923a6751c116d53912b76b12904ae. 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/US83Z2118881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e9d2f83f5dd8d9cb45a4b62755e7aaf601ec06c27dc3b58b1d5cf441a52a0d. 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/GBLV61925960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2855faf92277f18cbbcc7cb5976962d03787daccad00e9ee8d33e7ed6ad4a489. 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/GBLV61925962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda2c2018aa56d8f79a67206522524d71126c1f36092c5a0cb0cac2dad665975. 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/DEPQ61800660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548d35d61229440dbefb005429ac126e01b0c0536cc2640a40ff16139819f823. 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/DEPQ61800661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03806aefaabbf8e887bcedf48739f151b5f1a8b931e75214e6113936ba0742e8. 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/DEPQ61800662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa868864b130be80152ce9c9df422287e2dd66391144f9ee48642c38db5d106. 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/DEPQ61800663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f4eebc2e55e1602f7be30772bd7e1abb63fd8839ebd348872955887f761488. 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/US83Z1791078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435d0eada67a65d8e9eea46bdc5726ee330813460f482ff23f389bdabf20ffb9. 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/US83Z1791079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947cbfde6983e2e44c6083648ee288650315946e07b288b41eeb33e9acc06c2d. 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/CARE91801127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2fad008b4e3b6a7cb15dc6e9b8a742383bac38141204f1d196ea1f8da7aa5b. 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/CARE91701084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed4ad843a2d6390e24a0caf2d835264c48e4c11edd0dd5b46b22d5680dc26ea. 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/CARE91701087.
Alpine Grooves 14 Coolnest (Kristallhütte) (Dj Mix)
Bar 25 Music presents: Sounds of Sirin, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bc569c83e4853c3d4dc3dfecc6f4ecf2aa3cc17afe505fdb2cb3f0ae9a2518. 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/DEHM81900739.