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 0x17f4cf55e7e774c92029f444798e5ae9ba1d96ea3a2c3b714cd98753e3f33deb. 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/64e98ca0-f412-4ebf-bc24-9755921ed081.json and https://artists.proofprofile.net/proofs/artist/64e98ca0-f412-4ebf-bc24-9755921ed081.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 0x4005b122d03a55f32779ee2d220274bed92cb64b1bde1439e6a15b2952521f2e. 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/FRUM71701702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbad244a5c7fce92a9ffe7c37216c608118a686500fe0bf07b47a4a0b396ad2. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FRUM71701892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb004bcbef4a5c382be76d6d4e68aec35707d5465be8665c4e7b4dc501e443505. 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/FRUM71800234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62d378e540c3a62bb40363053429af04c3bf0ad8a4110414b93bcb24cf1849d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:24:41Z), 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/FRUM71801855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4939b49a7064f0b9f75d40f8f2528053a2d5b9ae5a6be0741f5612bd3a71f864. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FRUM71802243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609404dacc535d31aba736217031c8310b83ca45c6e565961f10166d7942fbe5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRUM71802240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c14c921171b8f01ad2463c97c36200f7116eb4d7c35c2a667a3dd42880dcbed. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRUM71802188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe585d07c86b2a1b9918078687a212f25a6c8e827896bb5e20bc9a7bf1455a8cf. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRUM71802241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff37e234a276bd5ac64ddd8caec679a8d30e21edd0604544208879706f3c1f15. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FRUM71802242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2653ffa9111485263748538ca344247f160c38a570408212382e7eea6f981d02. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRUM71802244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4099cb7265b61c12ea0eed2fc0217b58e4f9e0bcd9570a43c5a0d49d377e9f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRUM71802245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd835b20601c9998ca3c5299d6e84777683548396fedc0b9166b92a5fb100e012. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:00:45Z), 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/FRUM71802246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3daf5b746d61e3f1e645ab53e1a4361dd12e51bfd5936f4974248fc50cb978. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FRUM71802247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588f8027e511b1627ff64475965771f1f53419e8e9b20c90efd1a7f7677fe264. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/FRUM71802248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8920735ff1223d4ecfda3350b4a5aff1a3a9199c8c66b33b85fca8f0795a7f0e. 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/FRUM71802249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17486fe566728a3a9dbe0b2d41cc5c5288ec202a78e2c1cfe39dd20218a96e31. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/FRUM71802250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62d378e540c3a62bb40363053429af04c3bf0ad8a4110414b93bcb24cf1849d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:11:50Z), 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/FRUM71801855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963b3eb73bb95f9574734443ef542988317dff2cf9cdb8451e383adaae52b481. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:41:50Z), 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/FRUM71802253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c5f668ef2b25961ecf7ad217a76a26d2e8c63f66e5b2adbee69841023b623a. 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/FRUM71802254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa29700061d7ad571db462b2e5c8db5e25349521b980f9197f22ee6f640ebbb. 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/FR9W12019951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93be30e7e336a0526139fb9a142478b5ba4a83297e9a97a0616ca3805a050cfd. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FR9W12024880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217b45a5b766838f93c5dde5d12965728b5f95abe5a9cbc312bd452d862ac9ec. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:47:10Z), 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/FR9W12024876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4653f2e6e1f960b253887cb22d0795af1313b1ed3202e926751dcee688584ad0. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/FR9W12024877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36bbe1df050708f547ae7c1788d205d1016130e7d6b7aa97fe4f6ca7f86df9f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/CH6542160292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c374091f4f041108fa9c9ddd85fc3573b8971d956a66bfb5c5f1d7713a7ca97. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CH6542160288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a160fce947425b48758ee7372b6253f2d663101e4d1375881555cb208be0437. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CH6542160289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fff15f71e31720248d6172a5f68ea1396519af338e6239c1d843ac36c99c944. 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/TCAGB2247386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bc1a62562cce7c5050bfae74eba3c14d4c78332e4c0a37f4603f8887c1feed. 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/FRPZ92400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bc1a62562cce7c5050bfae74eba3c14d4c78332e4c0a37f4603f8887c1feed. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:07:46Z), 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/FRPZ92400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6330e675b8715a7c49a83754c102914740dd6cff5af556e6d997c2307598574f. 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/FRR642400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb9e75f074b4290b0e8203fc74295f93651462e891b9fcd91d603a5caae8ad8. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FRPZ92414460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb9e75f074b4290b0e8203fc74295f93651462e891b9fcd91d603a5caae8ad8. 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/FRPZ92414460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dc4b05bfce85c25cce456e47fef2fe4a1044011c3112a4f8466e3fe34a710f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRPZ92419620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb9e75f074b4290b0e8203fc74295f93651462e891b9fcd91d603a5caae8ad8. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/FRPZ92414460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60833bb51e87d96f84d12865fd685ca0a043f25ec5cc4b9be029d171a7b033e3. 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/FRPZ92451450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4d5a58bf2c63194df9037722d6db6ef517e6add2adccb51c9ee4631c6c6fda. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/CH6542487248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dca188806a94b7a941b80a50cdbd6c97699fa19de3629ea3f0be18bed11e874. 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/FRPZ92504460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1645a6edd5865a035d6e1b071e4030f5d61c60c22d67f5aa11e3d9c4c44b7dc3. 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/FRPZ92504470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20dae7233a75fee119171a64ac0886b4055aed81e410cae28c99589cd2aca548. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/FRPZ92504480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112d48ecd4814e0f3e85ca043c4c9fa0cd0849179bd73ec5b1964f56f75bc440. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/FRPZ92504490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efbdb2d45d1dca3cd4d5585ccfb8f98f2ba5d3624eda7455559669f174a9430. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FRPZ92504500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6798c8c9e9309613a1da7b4bc1eeb599f499fbe757013af7d17994a35bbed2. 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/FRPZ92504530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698ce58e6c530a45e848747e1cbb652a66d83c4c5b8d10c8ae0177d87d13ec01. 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/FRPZ92504540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a9075fabc7cb8d257f63ee2de5eee0270f0866d2791775fb9157f1feb05205. 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/FRPZ92504790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bb17f6fde88e348b29b52e45e4ee54fe1b3b2f9a1262c469abdc17f5cc41c4. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:57:57Z), 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/FRPZ92504800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60833bb51e87d96f84d12865fd685ca0a043f25ec5cc4b9be029d171a7b033e3. 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/FRPZ92451450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc98cb55343244783a8607ab8bec71c7e0330328c537104dcb5b9005b10f1ef. 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/FRPZ92504840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5131cdcdfeb8013a0a5a4a6fdf8f4b6f88e11ede265f2187ae4abca1b5386d8. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/FRPZ92501620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccaaec08e4d2aa2f1c6f8c2ea03b65bed3b2e54f979944ee14ecf9ab015fe85. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR9FA1700100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7218758bb0b71db332ac65fd41030d907579e318f86dd384e44c23983b67e7ba. 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/FR6P11702200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36d5bd4811992a9671c866c301407e52641fdce1df92c4d8af9167727a493d6. 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/FR9W11905439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5a401b5adf567c685900245f2b33fd1c534eb0c734029b4e19a2011af4a62f. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/FR26V2063659.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch