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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1c8f45b38caa6fba739dda9da0d2d1f55839e86dbfa789faee01f77b428121. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c19e597a-9814-4874-83f7-d4708111e9cf.json and https://artists.proofprofile.net/proofs/artist/c19e597a-9814-4874-83f7-d4708111e9cf.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665a0ec25e19d269538f32d3d42b594c0112eea89d0b5125621068ed701e4ce9. 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/QM4TX2446173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567d6f50791b167f7b19f3934c0b14326cd251b94d0991e5d93ca76af84b90cf. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QM4TX2446189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccfa67aa07137dc4ceab7f97fe9789d295d1c0a87036e3e93826f811ffc7c0b. 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/QM4TX2446149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44baa9a1972cf241cb99259881a44e23e5386031ecc45b425df845a690a25ab. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QM4TX2446150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d12e6e76a6d853da5b35fadca80becb312a3515714be3851d1266744df6515. 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/QM4TX2446178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3007f4ac63eb8d2b37147cd7fdfb543d08dc615c585f40eb91619a54efe67f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QM4TX2446194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c60348e27e8a05e8f524c4e46b655515bd8f630bebf7ed418f0a502a7a21f00. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/QM4TX2446155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80be2f29fcd05698ba44c3c64709d2128f0faf15de57ed47a0590e0d10363b68. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QM4TX2446157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b98770313de4a14bbc96bd774905a6f2ea1a45714caff988648b2a2444a0e0. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QM4TX2446184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4dde803c2c62215c59d78073b9b2950c4cc279500f79b643dc4ee4fa240050. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QM4TX2446159.
Spiritual songs: Chant, Qaroz, Kanonaglukh
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccd7ab54f2b1c89be46994d8b67c3f9c58a7ce1cf71343a7ea131010d346487. 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/QM4TX2445498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829cebfb1f153728a817fda49b6febde24d4a24bd932765e41a8a9eeb490633d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QM4TX2445500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2325f0199a8a2f48a14070ba1e460dd521d1bfd91209d30fe351f3d810657c11. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QM4TX2445501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e6c831925563b9d3a331e656bdb375a0f5e5c1eff31b715a1a0e025735ba9c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QM4TX2445505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5237bdac5fe76910a662fdb404f162a51ef76827db415f705776aab017961d9. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/QM4TX2445508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d41832db360fe841d58da8b474f155d6550de4d434c549deae4535919f1ed6e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QM4TX2445511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fac04cdcaa64cee37e00065f1c9962b432dd05842e0ef5d6bd0cd570866837. 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/QM4TX2445512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3472c427443ddf5c5580dca9ad89e9f228128fff7d0a7672a20243c3b44ff632. 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/QM4TX2445516.