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 0x0a52939abc322e47db04c2aa15effe079c23096616d961285701dd23f373669f. 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/000383b2-0eab-4568-b791-fbf79e639c9d.json and https://artists.proofprofile.net/proofs/artist/000383b2-0eab-4568-b791-fbf79e639c9d.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 0xad438d345cb33714137ea79e22e49a63a872ffe15c1d3dedd1058a1960d1404a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GBSMU7125263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea8d2d917e45feae3819d65618051f625a00690f0808d3e64d0958651d393bc. 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/GBSMU7125264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8118ecd22c0fd0b56fec796a12c0fd4d5762239c0092991307c5914d1a5b89be. 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/GBSMU7125265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce38aa61e1d3e9455e8fee403af4debe1e9cc2247ebd59f096d7bf88f8fb269. 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/GBSMU7125596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8869ec59fda63d599cfdb43fb850eff1f7d93d09f2769174be37bd6c497c5f9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBSMU7125597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba502d7e8227eb5bd1ecae70c311476952e67fccd245b1acccaa33199700bf8f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:51:24Z), 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/GBSMU7121446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350d4f3971db3e438680e3f0231cd75942ea544275a5eede946847505c19219d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBSMU7125598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4990dfa120ea4fd2ca48020c9f9c4064c2a06ea55e3cde87c8b6106fb3f77d58. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:22:26Z), 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/GBSMU7125599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bbd4c1cf4191ebbe50646f2901ab22602403ec0f1af680619252857e91837f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:55:47Z), 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/GX4R52190927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840876a98183c61a3af615cfbc12343c5f2d4853b70f9901692553053ad12470. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFV2590858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72713191524883a36acda1255aa64d235fda01ef7a78dd2da943ab5cccce0afe. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBSMU7118194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680767fa58b41e70e0b757da0f21c553360e72030ba42e3acba7ddc709bf83f3. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/GBSMU7116114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7466efb1f8320f90d0a30089ab1efd21ec2593e5170f279cbc3df953a507ed8e. Chain 2 (Bitcoin): anchored in block 957536 (2026-07-11T07:16:23Z), 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/GBSMU7118502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7466efb1f8320f90d0a30089ab1efd21ec2593e5170f279cbc3df953a507ed8e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBSMU7118502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72713191524883a36acda1255aa64d235fda01ef7a78dd2da943ab5cccce0afe. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/GBSMU7118194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81ddd3914600da0680161ea8d50c7ce901e51f7e9e2f35bf8490d2891db057f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:33:43Z), 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/GBSMU7118427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81ddd3914600da0680161ea8d50c7ce901e51f7e9e2f35bf8490d2891db057f. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/GBSMU7118427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9010a469e87094321af87d290407258be969212f2685dc915f3e1e1e17d852d. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/GX3HH2178420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd03cf0af6e07b71338ef728de664fa2c1b72dc04844476d528f14f9db958ea1. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZRP52430088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13283e6157f188a9d40d1a95983c7ea88ca5a6c8876549cd59f1d552902c2e10. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZRP52430092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440d31380718150b352b1538078f8ed0517073c8597c136b4cb7180bdb5260be. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZRP52430095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6135d5b00f32d99834d72d4d40cf7408972dfc8a8d2a29f73bb3f35501ae3a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZRP52430091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0343b457874b1a1d1e93ff3aab521eed1b94ddbfc28e2774a1adbfac8b32ce. Chain 2 (Bitcoin): anchored in block 957536 (2026-07-11T07:16:23Z), 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/GBSMU9970573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1641e2ce9e9a3b111b8e9c44d2c8f20016f01d26ea851b3c5b35c0d4589784. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBSMU7996417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa957b25560c0337496e5e48e57d5d80158ebdd4a32278e3c55ed2267afc311. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/GX4R52140739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44dafd9cad40b0dae0949077316013b61cef095199ecb110bdb5572ab239aa6a. 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/GBSMU9735773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e8176804885351469159f839f042b06bf9126cf11ada89f4c515216287ed2a. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GBSMU9735775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7315542377ef767cb7d60e96867b31b7cfa407a485cfeb631081945e46394e7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:48:44Z), 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/GX38U2286242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a8a5ba2010d8910594a1a23452846e538dcd18e124c10c9571c9ac59809c9a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GX5MX2281013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a55f99c96f342027762bdfef6002f57301979debda352dfcc0895d4a98db0e3. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:09:31Z), 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/GX8LD2316735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a55f99c96f342027762bdfef6002f57301979debda352dfcc0895d4a98db0e3. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GX8LD2316735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3fa9e2c3dfe139fe3c4364f694e82373be0fa07bd37b6a2d37ab6ba42df151. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX8LE2511902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab908054b51330950232798f11610fa42028bf9d3afeaa2bc7112d3db95968a. 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/GBSMU8515705.