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 0x6e3d38095b8920f3e274040042670039853d139a90f85eea23b026063f4455eb. 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/f10c299f-b036-4985-a06a-27116985237c.json and https://artists.proofprofile.net/proofs/artist/f10c299f-b036-4985-a06a-27116985237c.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 0x24e3e6542c98dbf847fcd15a8f14475b33e9fe27507a17f707d9f5cb49110ac9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX872000591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf1c15169ae79ae15829bf6a5603f24b20033a67d804d29c07b73dc3bb9547c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FRX872000593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b552a77643abee0a9ac96955d15e18f61041b0c45fc99758b772f1f9fc99b3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX872000596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67aaec53f21cd29a1340a4ae4fdce73d377211c5344d2497dd1011f7c1a7e637. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRX872000598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32920682dc2596d78bc64c2c4574a83d901a4ff071752bab7d8fdf7ec5b31c5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX872000599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab1a625690ab4076922e5813f32ca7549b6ec29c679511bee3175312068ef60. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX872000601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2420a3a9b9f6cd8d7c4c6481dfc0b941e05bc0d003c21bc3fce6adf23c5ef7d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:10:06Z), 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/DGA072175112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e966d2db3283e299160289eac9ffbc0a17c85515afe65970a6670d84662c7fa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA072175114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e3e6542c98dbf847fcd15a8f14475b33e9fe27507a17f707d9f5cb49110ac9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRX872000591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972b38fb44b41436bfe36f64f8cc11a874f2342ca42e2c28f82b70ab290d5fe0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:58:56Z), 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/FRX872000592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf1c15169ae79ae15829bf6a5603f24b20033a67d804d29c07b73dc3bb9547c. 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/FRX872000593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b552a77643abee0a9ac96955d15e18f61041b0c45fc99758b772f1f9fc99b3. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/FRX872000596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67aaec53f21cd29a1340a4ae4fdce73d377211c5344d2497dd1011f7c1a7e637. 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/FRX872000598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32920682dc2596d78bc64c2c4574a83d901a4ff071752bab7d8fdf7ec5b31c5. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T20:49:03Z), 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/FRX872000599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab1a625690ab4076922e5813f32ca7549b6ec29c679511bee3175312068ef60. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/FRX872000601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdc0747d3ab397e5639fe59bd8547f5234521f055dee4b7b2276b27b6982fab. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITKWG2100181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44baed59b7801e24ad3f0b3852e3955e4974837260ef20d0e9cfdb3e5438de9. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCAIF2493210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e5a35e7708480f251fb5e7a0bcb2c654a33f06d78c634fee05e55b0d050075. 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/TCAIF2493240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0202f09f3c8a440e01f5c19ceed314c42fef751a2a9029685625422d1083b53a. 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/TCAIF2494354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf598d73cdc2aad26b479e0ed7bb02150c0f69b86070bc9270ed10120aeab19ec. 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/TCAID2463060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efbdc8a91977c3c01a479d2bbbd1f05ff0cfd8a4864f8bf31f04925c34c79cd. 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/TCAIF2494409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd4b7306fac7a97532fb10a0f6a7fb5de9a076cbb5c58a72944ebf0894c644b. 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/TCAIF2494459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaca75ec45d5a4211d16bef427614da68757cdc246c4a50b092e9cbba2e31fa. 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/TCAIF2428701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46e00c4e8b15a8afcb31f370c10afff76d3343326aa36420ad4e6fa9e38c771. 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/TCAIF2494520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9935693bc6ba4a6b7f4c00772f835e3b0c16f0bd0fdf336fffb1a99d3beafc1. 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/TCAIF2494532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29d0ebe54648bc5a26aa7659c9421f29adba756c8842a120389cf4dce28480d. 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/TCAIF2494549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff57c129b7389805cce5ba35e1a94405648e66fdcafe678ad2d6e7d247913859. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHN81976221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839d5cf58be433591ebacce6f91b74b48d6c05ca11d7d09d8f371e5124d5b187. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHN81976225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f70bd876ae16c7b06a00c4afd7105b0583a5900896faac9e5aa5eab91bb1b3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN81976227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaca75ec45d5a4211d16bef427614da68757cdc246c4a50b092e9cbba2e31fa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAIF2428701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf598d73cdc2aad26b479e0ed7bb02150c0f69b86070bc9270ed10120aeab19ec. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAID2463060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95d6680aaa49f829d1936715542724d2690e832b8693547f884954a825db71e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRX762374269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd567733d0037855fa36fb419fb9b9da063dd500bfdccbb2ff1c16abb3b2a4db. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX762374271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3200a06aef705db40a50d2f2234fb16284e930fb39c1c5c616134ecbe4280e. 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/FRX762374274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa506affeeea92b97054a3c3aaca17dc341608b8e95345aa54755366ea9ed1c55. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFYY2179466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52ef706763de82405751e7680a4ef14c4a44ea334cace5bc281a28bc6bf219e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFYY2179467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f204124053239525afefffc36278db0faf5f3c50bb55bb3b7d5494d8891c1c. 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/DGA082338185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a1f1da44859960ef825b209ac5c1c366a85cdc08e94429d7b2d1e7ed3da6f3. 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/TCAEM1964808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8e08cc0c7de2893f31c4475ef46118ff78ac26ea1656ca4f0d62d30262b5a2. 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/DGA082338187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191c3c360cbffe2c70d046ab38396890fef08f4b3c3ca323cff7c3abae49d486. 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/DGA072211633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadda678e4f7b3c4343b5723de670e44c9807ef8aa9810fd89c8d76095f7b44c2. 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/DGA082338189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697a76dc8a3a787b528a89cc694eb493ad33a3d34c416df0b3a2cd0440ab7343. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR59R2209267.