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 0x2379c26fdff4b6afd85f6a705720dd15de9b18506be8c77d37565d313adfdc29. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/706b6ab6-405d-45cd-8ecb-3fad31dcfc46.json and https://artists.proofprofile.net/proofs/artist/706b6ab6-405d-45cd-8ecb-3fad31dcfc46.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 0x9470251b1fd22c0a3be91bae8b1cc9cc3b914558d01265042df30194ee177d86. 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/QZNWY2473996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14809285e688bc28be18ca0a21486f023f4e7d31d271d2a41f4161a5cf7303b3. 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/QZNWY2473997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239f0b7ad8ca8d54a4917bf67058bcd32d4fc7349a6e0a0701830a23bd282b31. 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/QZNWY2473998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe25e01e80ea7417640a2c15d784c47599a7ba66eaddb4a8beb4284396e986e. 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/QZNWY2473999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92765c781a340bea2a5175b338728ed54ce45a13657a2238b89e6799d490fa6d. 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/QZNWY2474000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc59f79569368e27cdac5e17f809aa1707caa19e6e47c7ff97c618237c6d1706. 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/QZK6N2492761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1de9b543fb838c660e17b4d0f1dfffe83891aa78182b29376f57945e40f7ca. 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/QZK6N2492762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fce2bd67746f3569bc2066fe5e9908d469c3fe5fe7addeeeb3f2a0ffb8d1baf. 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/QZK6N2492763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979117811d3834a3f00d30c12afbe86e5ddd8e530f005d9990d04b25e1a72cdf. 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/QZK6N2492764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725cc706172c0f397db3297a5e7ca0dca86eea8ebbfccb618a808cc80f29dc44. 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/QZWFQ2339922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaca4d6ce087ca4628a53feafaadc523045113b73108f8cdc42bc228ede96b9f. 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/QZNWU2309155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39503ff989e5684f80b31a0fbe46998fd3e026003b7bba475c8b63be8a0f65b5. 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/QZMEP2305211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87533c8c3d2aee2ee1bda109a32af2afa50fc14ec7209dca292ca2cc2a5eab41. 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/QZMEP2305212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8da411ab81434aaec52fcc205057bf1a4dc776b1c3cacc49be0b80382be05d9. 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/QZMEP2305213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177ba00ecc2f9a450c11bbe2a7b0ecfad8a3a59a3d66caf5b14bc7dc14fe1c94. 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/QZHNC2328655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa01e8ec2785dba6634ced428ddd21785f674298511f50905eb3a7bb20f41d50. 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/QZHNC2328656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd5089db6afc8a40fdb5680dcd394fda873373d9c35779b81186d88ac76236f. 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/QZHNC2328657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc509552412690a951e755d465c889bd6c3a4357f41422a00a133e106c33bc540. 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/QZHNC2328658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de9ebdb661965c55db5f086c2e22d6acdf68d6ea4ac5c67320813a498b08a3e. 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/QZES82336944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39185a228b5976a7c77d506df856af04857b25496a5230caaa323360d8d764eb. 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/QZES82336945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88e4657361f53e2d03feee8a61f633f889cb48d12bfa699c7f45c12e1b83191. 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/QZES82336946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffbe28ca2734e337a99a17cb64ee21bce4dfccfee5b349043938a8c3d2f907d. 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/QZES82336947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43659153a15de77ab877477ed35fd1c5db6934512e2888d75cbcefb9cbf5764. 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/QZES82336948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a19aa31d7df4610927b11f1a5f43c2a2660ac869e28ceb27b5bfe1aa3e2a4e3. 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/QZTBA2268366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf217f9506dc5106508236f12af956c667877bb59c027beb5e799de0598b8c00f. 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/QZTBA2268367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9ced7fbe47e460c997ff16ac2f7f39d234a4671b6a335250b7ba40ebc01645. 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/QZTBA2268368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c171dfe675c9d11f86171ff72beb4e7076f1febcd33665fbba640697be39a7. 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/QZTBA2268369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab13924f10c22a49585950be7bec1ea40b422fcae1eae5ddb40a1e9f5d83df57. 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/QZTBA2268370.