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 0xb98edab97a75dad13281ecf8e5a7337fd61140ab4f305d85bd906ed43bd4fc11. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11199855-e940-4e30-9f22-92338c6d5ef7.json and https://artists.proofprofile.net/proofs/artist/11199855-e940-4e30-9f22-92338c6d5ef7.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 0x90192050addabc1dc83ce5c41dbd39ee59f0aeefb05cd825fb881c971b3f3eb7. 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/SEVGT1004802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0003ee80c0955ecc3fba062a3916af0993ce69f07bd5eeff3b7e5611739d352d. 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/SEVGT0403505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c10ffa2c5a2ed148f2cd8ac9408e91aec2d736d1a8651f17e92897d51be1d5. 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/SEVGT0403517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80af12dcb92402d4761b3e85369e1ee94a5b004e1784a026d087d05eb5e5839. 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/SEVGT0702711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187cb7319e00a3fe0ea40b3a34dd255e2a374b51984ad87b464306e3d744a2b1. 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/SEVGT0604419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762d177cdca04a28a4450dd2148b99e71f11f9fa72aa029f1e9e3bea89ea2202. 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/SEVGT1004807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27eeef0a0d9b5389bb84f5b7f1e629b4627705390a245773c265339df0bb2d7c. 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/SEVGT0403520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4235c0a8d27be4b94079f7e4efbc6f8ab3b4ff5c4923b0ba6ec45cd6213f42e2. 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/SEVGT0403510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6202482ba2012082825e2f4b9cf495464b8805c853ff32644bc1b77de12df57d. 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/SEVGT0604405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29ee74369231c377b05204c40806431cb4c9ca325dcfae7f9a30f89d3026772. 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/SEVHN1000301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7aa6e90a1e5247a4973c34d9c2e03e1de90b8a5701207f3fa5844f6c82abaf. 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/SEVGT0403511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb604181e8d90c651e97f06d045aef1ce52a6de7c73a959c337cfaf9295094b22. 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/SEVGT0604402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe012ed831135f2d091a67e2c6ce18c7fdc1428a84e8f06be1b7b714c38f92b7. 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/SEVGT0604409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8214118028c2fbcbaf0f22ee4f7cebe6c8cbe270ae96fe211e6ce60ded781e1. 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/SEVGT1004811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdd869b00536850efb4229d5e7a9d65e9848629ec59d747a1af9181cb0b16d1. 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/SEVGT0604413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd0be4710318c35597e506418d8daaa61b36928fbb8cee5ac7e086ea26dc139. 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/SEVGT1004801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9e96f3b713fa500ac9d4ee022a1ca6674265186c3402315467663ccd0d5380. 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/SEVGT0602416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cdf9ba5c0a67f0b68cd183ed7aeeff14d6570f6f347f1c84be905d34774b13. 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/SEVGT0403507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7831a33881d63eac1f60ebc975e4c71bab9b5303ae3ea88a609858846595348c. 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/SEVGT1004806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8039b68898c4e19eda2244829ca29809b31b5199b40273e7424ddceeaf09652. 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/SEVGT0403501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6b971eac58493aa167dfa8d758158c2e5a841f34bf4cac64bfdc29d6aee23b. 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/SEVGT0403506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a5cdba3ccd5a569893c7c021a7c22cf3a3e7352d1466230a96c5b6085a0d54. 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/SEVGT0604411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1093546badfb5eb0d61b5af6a5ec1c139de00fa3ffd8930ce627260ecab8a7d. 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/SEVGT0602404.
Barnplaneten Jul - Klassiska julsånger och julmusik för barn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6823ba2b29bf1e326960a0c51a7645071b78c1fd953d21f2cd31901a1d607ac9. 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/SEVGT0904711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c8d14df395b9ab990aa833fb1994b9c387fc74cd9bd39a10773bf9a4087bf2. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/SEVGT0803703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50acfe115cf2c35fb789e0c1342b15879427146deb132d126a8756f7efd1f39. 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/SEVGT1103704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d914827ff44edb7d748507fcd0c9ae7adb05998c6172d33ce05a3093c797e85. 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/SEVGT0904705.
Julparty - Barnens julmusik i roliga versioner
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1ad2cd97405b59683933aed3537638ff7efcef6ab82fa822de0368798e3318. 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/SEVGT1703809.