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 0x2504236d8aeb09753a778813db414e63d9918c3f017922a44b4050f8aa4fcc07. 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/7bf2041c-0f53-4fc3-baa9-a8b01eba8e00.json and https://artists.proofprofile.net/proofs/artist/7bf2041c-0f53-4fc3-baa9-a8b01eba8e00.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 0xcdc0b69555b1fe5a70e2951d26b3af378aa4a0a3e0699b6de73c5a57ef6b8d7e. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:47:08Z), 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/TLREW2221442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395a2dadc80d6555f3281ec6a9b0ddd17947f24fad9ccaa0b496795f80364465. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TLREW2221443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98768f4ec7f871e1b982fcf126f411dc4c6dec3917bba9fcd1e663f991b00663. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TLREW2221445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e3b7e510794e97f99daa7c0c41278a781fd311306abbb890f18320c31138d7. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:05:17Z), 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/TLREW2221402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db233752dd90c42a5b9dc58ac36a75dbbe6a08bd24a5566d94d40ea98867cab. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:05:59Z), 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/TLREW2221515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dccddab328f2fcdbc9285b865538c52395de2395857ab79ceb0d09bf563659d. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TLREW2221516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85a75df1a95be7c0098d569bf6b2bf0d73e155eac693ac7a39972107501084e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TLREW2221519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ebaa86e033d37cf0e80318db6e4b67b32e877157aa632754d890a134b53590. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TLREW2226796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8389c6293685d49307c25839d68fe54d8fcf4569ab73f49ab4450b2bad12c092. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TLREW2229458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb206a7346ff4c48c33e73df7c64c39447f7ab6f8ae1a6b91cb8e9998ab106766. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TLREW2229459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1878b06f974efbbfe2c94d46f220595e53e672bb6704ec30da9c0c533233bd4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TLREW2229461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4672cce780f1c3dd9f44902fd770a2797a96023adcfd194f726fa11af8f0ce24. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZVEM2391186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703b9e0ac2501bd4b7e1f29b7349352f6c3a71490d3b980f0d77ee50d9a96f7e. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZVEM2391187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4d7345a8fa6098885289a21b4fe152cbd0fe04ab34c485867b61938e74558e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZVEM2391188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d3de3fee16fa691fb006ba45219002ecc40be0f828f4a7e9f8bd46bc703b16. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZVEM2391191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75076d5977df25759c47cc9e88a95a5c68899263d1e70273379892c367d67f4e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZVEM2391192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d64beaf395fe391d682101a6fcdb3b1c8022a694dda3515df6d4a9063e91678. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZVEM2390692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdf9343b9551d0e57cfab5b5c0478e93e61166cb5d596a73a94e9272f1e81c4. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZVEM2390694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a944f0d692f83f90b8d7841eb601099d826a160dd57901cf7d6eb0e3d1b966. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZVEM2390696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48aea5bbbfc2a95418ac25ec09b00fdf314163c9a7d88b1b98c114e2e6bae821. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TLVEM2463626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0585bb9275e71f4953b724b9c75b3f99f5a1ac4a989301c03b79da35525888. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:09:53Z), 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/TLVEM2463633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b40ea1f749d79274d2df9edc37f5716e21ce1d6f24127087ad7c768f64bdef. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TLVEM2463635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd47c640aa812de6b27107ab1584dbc3dfdc7c1ddabcae9d4aa4a77117045eb0. 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/TLVEM2463641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20287c3bb43e0b37d87fb371782eb7df54704f0f96a6a675c365a3628ec6c961. 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/TLVEM2463643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26cebe12068b1b411544dcaadc56916418a4d24c65cfc9fd68b801d6ff093e9. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/TLVEM2463644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba6fef9ba931df61f7bb0a0a7a311af0e6fce937ddf398deeebad848e2181f8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TLVEM2463646.