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 0xe234840144362c241ba875c98a392d7ea24db8f15ae253990dc96d3ac6e527c9. 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/0e5093aa-c885-48a5-a99c-64677a60ae2e.json and https://artists.proofprofile.net/proofs/artist/0e5093aa-c885-48a5-a99c-64677a60ae2e.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 0x67a904b3d6eeb182636a7b50744c06795d26b0434f9f3aad2c7da5929922c0ba. 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/BCD592200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9955b6382a8664f007feb0f152120af11c001a41b339b24cf1cc90724e71d3bf. 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/BCD592200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d59de9bdfdc40da6f7d93a5b94d4132371be20412d4604094b47e8fd6a92b1. 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/BCD592200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf169f9735e64f9c91078937158cf592d485c9dcaf9ce84926863377f17f55ed8. 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/BCD592200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4069782ce001ab28be62dc0ebffe60a3afdbbc3a10fe0ac90911e1c6e13ef0b. 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/BCD592200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594114d319af252b5ee5f97e1ddce8ebe6731d3ec450fbd8a4c35b59b47a60d1. 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/BCD592200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940a95f1c60ddf3aeb5dd9b478fa983c0ba8d14092908bff9a57719298ef71ae. 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/BCD592200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5914458aa88e0a34bf53e349fdf8fca92f6699b514449423ee5384b65ab14255. 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/BCD592200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cb1a0f5b82a58d3ab5dca4e21bd3cbb45f12b3120b9e24c69f3d4adef14936. 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/BCD592200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3d2584dc40ea157e5126849d17c5714146d6a86b58f901ee821554d86d662b. 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/BCD592200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ca97d6b014d7048d22dd81835d8ee842a75eae3b1c896c4444da014de2d7db. 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/BCD592200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8c9a6cd720cbfaae75f19e415957c46e549979491b8b1de0d9932789010527. 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/BCD592200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9416254310d0fcd23ebc52d4fbc57d92cec81cc95c4cc2217bc919d012098199. 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/BCD592200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5626d729d2eb1e49c929254455be322c5468d873ca04ee69aff4907659cade01. 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/BCD592100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46eb6bfdcf4b7093102d7842867f65576e12c371735e02466d738ffaa2f04499. 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/BCD592100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b485cdf82a22d1eeaeda477c0d7bbc6552ab9450be68da707369fc9b3986dd. 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/BCD592100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fe7428df0650994e9877262a33e2d45fba6e30c441c9ba5023a651a81000c3. 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/BCD592100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44815a3c0084689a059e81f98f8ac7918dba7a8ab18c05ce7fd005ccd257bcbd. 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/BCD592100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c228a5ab3768e59c20c78874b40c91955e70fda6e3701bbfb0c1c9d8926a785. 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/BCD592100062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d7b10d32e64f60c1b7a85ae39100aa4041bd6777f6cdab2de1de3b4b96985c. 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/BCD592100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b09233bd2f5bc3159a0e95d1f2e05276848134cf99474101d818f19456910e. 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/BCD592100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552c9a8605d9d3d65e9582c34eef2cfc7de4d76cfbfe010c84c3931b886b6366. 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/BCD592100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45578f6b2fef593853ef6e82c7c823a099b7b02402a6c24444f48f8a6f214be2. 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/BCD592100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9144a1602b9b483cd7d9e485d80e1e19d4f7027ef559ba959eb0815e398ccf1. 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/BCD592100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80727202c217280a2a64b6317a37fd237cd7a884fda65612091dfa0878e8a335. 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/BCD592100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468841e73a1bce17d349dec640d0f81ef4cce9ac9fb4e76fe9dcfffeccf58201. 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/QZHZ62115923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89266e12010035d40e2e38bcbc6a24bbb2053e3ccb6fb6970c5a54077ebfa6f2. 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/BCD592100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67369d21cb0bf530fc7f90ca062bda0506fb28548b314dca68c4eddd1a479cd. 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/BCD592100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4338c66515744a49b2e7d2ad70b8d453588666f0774f7d76439b3d211fc45297. 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/BCD592100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41b1e62043b2a7cdf32d0a79596c449a83c958146cf83266c28e4239b547f19. 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/BCD592100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79eb53bd3ef706dc9d0c7e984f745e1c721fc43bb6fb2565e365859ff64cbecf. 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/BCD592200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd92d83088b0b5e9008e1ea95e9b5226a61c39627359808eb5af782402d9f55d. 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/USLZJ2184328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda982b1865cc48a98bcad2704d9c1c8ad06c930b239c8526170d5fe9eadd350. 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/US7VG1615977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d85cca744751f5536b2de8e44433bfef76d530e619db0844affe5bebf5ed54. 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/US7VG1328004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc021f7fde03f8d08b57c43440b2bef44a27c99a2ea657360f17f4e1705b709ca. 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/US7VG1615981.