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 0x0ba5cdd22d8002a1c279d4816a0c6c676dd27bd4b8f5c76d39690fab94049675. 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/29ae1719-27c4-4352-bcb9-9a60da9cd593.json and https://artists.proofprofile.net/proofs/artist/29ae1719-27c4-4352-bcb9-9a60da9cd593.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 0x642f2d351452a874d4202104e6e3c939284e456373cbcd8871c3d0e16d473875. 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/US2FD2210601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3f6a61eecd326a8c4ad75425372aa1edf0747a569854abc709e315ac55389c. 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/US2FD2210602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09a490c309d59e32b68730d866e160907cf18ec517542a1f8c783d77cbc02cf. 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/US2FD2210603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c2f9edac9b52531e667b3491b44ef37c317742a70855b2121b0635ab22b9cc. 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/US2FD2210604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2b9f9c2cd9e14aeba6975b9978e7a33bd0d7c0c4bf85bfeca1f0df8ac80e40. 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/US2FD2210605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16276120709c44edb3cfbd06d2d9be0f04a1af83a798b7bdd05d040581bfaa0. 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/US2FD2210606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22effa68a6d59c69f1a0133aeffee04ffdb978aee06700a6326e1ee74c860888. 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/US2FD2210607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c36fe4cf8c8a96fa1f8cac1f7ce6d393d582cb8dbf8cc1e7bd8f324c76967f. 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/US2FD2210608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680bc37041de8a2695eea761b2add317827ab798018d68b0ab6dd84a370df4e3. 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/US2FD2210609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b572935f741aac7b4e64d428ded417672bf326b633302c306f80a75b700ca5. 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/US2FD2210610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e6446ec7b32d0458c2eac3f28fb52aa998de73a6dbb439a83a2a0a62e99ade. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:20:57Z), 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/US2FD2210611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52dcd67b74e20d7ab64203b75473cb6bd2fd4f50a0a366e3a0b6d94e97e0bc6. 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/US2FD1809401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3ff75889fae824ef625f523bdfe7b1c9ddb384286b236a34a1339ab3c74659. 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/US2FD1809402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24357986cbce302d4ccf96195091688ce1c88721a3765f8e0c5f1d30fba841aa. 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/US2FD1809403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4c39f0eb7363e2ff609074b805514a3bfe20df69f28ea608c1455f3776368f. 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/US2FD1809404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968ec0961a08d69eb7eeb47a703aae75e81f9231e3c417f14351c35a3b4ffad6. 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/US2FD1809405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545b0e0f15746ba29cf886868b1711f0d959484623ccbe95f97031c972be7fb0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US2FD1809407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4288da2409ed806d8ff04eb15eba6ff74767c959163473b2b84b92660acfc30a. 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/US2FD1809410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98e081689e1d10a89638438f29b9a6176ca7040efb8ee8889e0774378562d97. 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/US2FD1809411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb895ae50d21aa75fb8b81fcca11493575ad3692b76f348db31d86fcebfee11b3. 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/US2FD1709203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889a19950c1570da4cf1acd187e45ce23a780193ea9d1c27f79f86b189429d1d. 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/US2FD1709205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58f229963c807aea5b7b4a126095c6f7abcacc60605b12d9dcb714bcca073b6. 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/US2FD1709208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3f6a61eecd326a8c4ad75425372aa1edf0747a569854abc709e315ac55389c. 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/US2FD2210602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09a490c309d59e32b68730d866e160907cf18ec517542a1f8c783d77cbc02cf. 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/US2FD2210603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16276120709c44edb3cfbd06d2d9be0f04a1af83a798b7bdd05d040581bfaa0. 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/US2FD2210606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16276120709c44edb3cfbd06d2d9be0f04a1af83a798b7bdd05d040581bfaa0. 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/US2FD2210606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3ff75889fae824ef625f523bdfe7b1c9ddb384286b236a34a1339ab3c74659. 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/US2FD1809402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58f229963c807aea5b7b4a126095c6f7abcacc60605b12d9dcb714bcca073b6. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/US2FD1709208.