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 0xb9420d30fd40220f32ed9f38b398416df4dc86a582811372b7c242b28773e71f. 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/60179176-5c2f-4f49-ab44-c4522faeb7af.json and https://artists.proofprofile.net/proofs/artist/60179176-5c2f-4f49-ab44-c4522faeb7af.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 0xb487d419d19f92e44d550c555f41a2d3ba82d31a2cb48f440613f2b1f6dba24a. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/TCAEA1956084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420bf90bda0542e34ac579a45965c90542d071c079cc96e8c2698a010eb87528. 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/TCAEA1956088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d3f3b691ea168cfafa66acfdca75a3352feb13970c052a5537c005815b9f7f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAEA1956093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaeac5f5661083fb6ff484e73753a08e97e3119b6d710e6e237251a33ecf714f. 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/TCAEA1956095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecd52b4931470d896ae74775d8e7e970bab6fd094fa48ec262cbbe6276bb869. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAET2035425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ef1d2b8e16bc6cfa40dfc09c7812cf0b12e766448cc4acfaa8c6138f7e295f. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:38:58Z), 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/TCAET2035446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f560438d973b54b3832c6b144af36e97bb0238b6dd4a2da0b6aa421d48c654. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:33:59Z), 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/TCAFP2107881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ee8c42d9a76acabc97fc84dadd331a789a6397eecfc59b661074b4559cd654. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCAFP2107889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbba0521b59314e117033de95fec01dde6c189de4da8d0a17484dac29911162. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAFP2107891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237e9edd3bc524505a7f55f1d42224c01d0b4ce3c7872c9d25ff5d203e3af170. 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/TCAFP2107898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301bdecbeaceaeaca34cd254857580ad9aaa0ed65f1c10f390b7ebbcc2fd79e7. 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/TCAFP2107904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ef0f1ff482c7a6801d86d935dda7f9ca258fa394b42212c4d7788fc3be2bf2. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCAFP2107914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1f77187e635a5f549bf57ca1a6f940faef2057a43c377781bb8d34443bbbdd. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:39:22Z), 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/TCAFP2107940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9409bbfb83ae80bed7db86c150cec854e9b690c6d923ef7cf2113fd7758a17e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAFP2107950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32645e63cdae176e4b0d0b41fa335489c0828bf14ae0ddf4f481148e24bda55. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAGC2289286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfcca07625b60801442ad4a7310ecd39129ca23f37440106d76673198d2cce1. 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/TCAGG2243202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644417e3743476b3863f0a0f81f63888fc6404cf91f2566a76343049779322d0. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/TCAGG2243212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a5ee02b452ccb747ec61e3dc69323991663662b0eb60dc233eaca2d4b057f1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAHC2329017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd698da0861171def6ff39a58ec97701921f288b38c92092c73d03f6cfc65f69d. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/TCAHC2329031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6c014bd41756be4425b1f18c79de46773f9e5a1240719dc13a7ce717a8757e. 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/TCAHC2329034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb892721d899c2f00c13aea64faacf382beab39ce52a84cc9a0406366294cca2. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCAHC2329036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09722ca3b93436bcb17f75b47d7b49c2e5d56e5c3d219f0701f2babfa8b907c8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAHC2329038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5464def62b46f05ef4f091228ed5f5df98b0e610713a9da7aed9902ca449559b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAHL2367002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a04b6970e3a040c46a446734dcf5db630e0e11e1c7f830bc75a867752746a67. 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/TCAIZ2438126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee642463c636f12b47d879723e3f2c98fde0cf4bde4fbbd5006b5cca7b3fdb9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAJC2417734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc57e1fc8f223fbafc6252fb7a871165d8917b812d934ad10c701000f3739e66. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:56:30Z), 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/QT65W2529469.