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 0x088facce848fc1d59f86f90981e411537acdcf55dc1a9fce14cc45989a184b31. 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/8396d054-a742-4b35-903c-d3ec0b6b39e5.json and https://artists.proofprofile.net/proofs/artist/8396d054-a742-4b35-903c-d3ec0b6b39e5.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 0xdbdbcd57d8623eac77c19a9a2bf66abc8e0347be03e00034fdd95e483dfff9ed. 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/INS181207175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431e193f3d33cb720ef28ae230f7c00b2e91913ae58d93e4594376cdb69d0a74. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:20:09Z), 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/INS181207176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975684977fe2a46cc998f3d927304fd3a94b91e1cf24e64369e22ed632a1c846. 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/INS181207179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62492d890c96b512d8d4a1c5554f1faf16ff69299102ceecfc8d094971e4e154. 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/UKXN22267864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0205df6c7d5d995ae93413518fd17f95c602f41123647a9e3c672ff2b979e3a8. 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/AUBEC2152177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7797546e32708712d7c5b16e9b169d73e47a2048b0c06bde93ea534ebf140115. 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/INS182200786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80138c58d6a5cc6f2a5691a2ed7ce0754450c9817d5becea24d76e549193051c. 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/INUM72400699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6276997b86b28e95815e0ea3f29814f2c13c5732e02299b5bc0a579b558e1b. 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/INT132400348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb11e5d10d1f1fadea13fef51331007e4834413bfc1775bbc83f875baec63ed. 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/QM6P42414750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f17da9e2eb927f79402162c365ae3937c7839dc767fc20005c8c4c90a0a3a86. 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/INM432400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9aebeaa94fb8dba6fc725b6624b0b793bd71af21adc023a4f510317c4433d7d. 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/UKXN22268314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1a63667e7e37d37568b6aaa3fc8115df5f2942f1a6162dae4775c182688dc8. 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/INT132400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a4f5eac6cb9a8509eef0ab1dac29733c5980d965219dd83abc5300a31263a4. 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/UKXN22268042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab646ecb1cba6ff1b24f4895d8f254861b69865f10ae553eca7ad95fae34f010. 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/INC622211569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254cf7a8f9b76769ac7c2b39c6de97ae75ca032d0f66fda0fd9b32b76ed8f6b8. 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/QMFME2352709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207319f0abed8d5b4007624c72b32b1ed232a208d33e77c7ac070bd5f01e7fa4. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:39:01Z), 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/DGA072392268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd574cb87131801c7694e293d7ebae63526db832917ffd9493a859f3a35923bef. 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/GBLFP2249595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb1eb06ccd12051502ec487aeadc810854f5d8ef2343200d25b3f10a63724a2. 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/GBLFP2248877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4012823a15aabfddd938af1bf81db4bc49cfa36324c96b98642c455c23bd6f. 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/GBLFP2248793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291494728a387d564a3553eb64fcba104f4e45fb7e22d55166c205246297eca6. 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/DGA062260705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4caa22445b0d1e829499a4d5ae5bb45db7ea3837a3d0c2b7acc331b6da2afa. 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/GBLFP2248773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d50992efde839e02169c4e897f97c1a9da9cc2e11fa96ea5bf81b8fcd24bf9. 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/GBLFP2248244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca378167e8a8a5214a78c56698d8d6ce0f9bfbadcc762cfd0039fad71fbe20c6. 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/GBLFP2248240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc296ebcfa1f811b08ea820680ac8719ca1b373f076f4348d6be79256a345dd56. 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/GBLFP2248190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9e4b52bfc162da1bc53805b16ed91393c5779e6d5faa06b4461868950d531c. 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/GBLFP2248189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9e6e0d43cab838cce456d0135ccdcd83c9bf540fcd664895903fd7533d4940. 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/GBLFP2248184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43de971d3d6deb7095709e39a1114018dd3c996662666237da6d9f3fe3d1141. 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/GBLFP2248169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c1489b8e4cf22979ce9fe084a2d23688fd131b8ee82c057e365cc236c85506. 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/GBLFP2245526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032ab8235663f18f8f4fae96e9b70fc77cf8d19642472f2c4b062a0c2acde376. 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/FR59R2283137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76972cdc265da606bfb83d33aa6d54eb9a5ca720bb6109aa0aed81da1826a298. 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/QMEZE1947169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f0e71fd5b8a74b2204a9897513c24210da4d6b30f41c9bf191b871004cd59a. 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/TCAFY2177327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227138eee92f079ecf4c6de90fbb2afe05cd81d77cef3e417e7d8aef6e62cef0. 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/QMEZE1947524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e584dba7f052c8e8a157ff13b7ca7febf91ae4b9f5423cf71af7741183b5cf8. 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/QMEZE1948307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23460a24f9e9d9b399d92b691607f6abeabf124d7f8db4b43c10ce876a2a0b3a. 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/GBLFP2048011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4e2c03008f5811f265657db6f486496370a27ec8bbf01f96676d4b146610ff. 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/FRX282157334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34582980e8121e61c3fb2af8e4906094871fd0782bd343abecf2630747649286. 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/GBLFP2048537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084efdbcaf146c50932888d56e3853d20d84c1f0506221aaf0c7f6a5f195827d. 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/GBMA22049886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3084a30987dbaf79ff44d935d9fad7f8ed27349de1af2d3d6629cb0de0fccf0e. 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/GBMA22049672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e96e2d87f2b572afe36f36c1e16bc06f71e330651fae5e85d153d15d817505c. 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/TCAFN2122486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77bb62078c4b28d09aea4606de81718d923ab78cdde327e094a7bc56264c433. 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/TCAFM2187870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e89b80bce18fb98fb12c0bfc372ad380f50a1a56b59e688c1db0b134a283243. 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/INS182006976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b88f5a63f60319d1fc227612aad92b425c8c869e3292c2c2c9bb87729bbc09d. 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/TCAFI2188101.