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 0x55aed801ecef37186db8437194cc1bb0bf21e04cb83c24ec786bece8b76947c5. 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/da1350c7-5bd1-4583-bec0-688171e91be6.json and https://artists.proofprofile.net/proofs/artist/da1350c7-5bd1-4583-bec0-688171e91be6.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 0x5c0e7e8fbc3c1d43e9efa81db62f263c93a4b6114e492773d34b706c8bdf1e69. 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/INS189710197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5283cfbcfd0c9032b36146d110acadfe3e6cfcba0f992c3b963efa863b776769. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/INS189710199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634b4298cf02babcb13701699edb89a9e5fdac57a684c6371b8d7ed6256e4bfa. 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/INS189710201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb33a304311f4f99c2e4a80abbad2119c0cddddb1cae1ed8455016aa8e84eff0. 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/INS189710202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ee1776d9b6344a1f14f59b200f0514b099fab8a80e4651bfe029aa1a530dad. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/INS189710203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c994888ba25327e2490018fb45e0a31784ba6bee56614cf868d39b39e9b430b. 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/INS189710245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea21d3a8613b52345b406b2b12938a672d359b5a8fc1ebdd91ff01117b6babd. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T13:01:26Z), 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/INS189811935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24ed1b3d31cc15abd6302df79469bf3cab91fb0f8fd0b45c3628872ed816ac2. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/INS189811936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d3d8643fa9aa0fe51114f922f5415716c8a8c2c765a38b5282e4700afeea05. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/INS189811939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ece718dec3f2f41180d02a52a5c75c22d58cbd686d84b4ad9711cc90d386ca. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/INS180021515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820caa2a1f7ff1fb0da2ae5e2aa6f8033e0e9fde91a8ac86f12afd64c6861429. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/INS180021516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3418a35b4d6ab1e35d1409885400113f57e27f4f31fa15b03baa9eae5d473a78. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/INS180021518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7f9c556990211b7c7ccc451358a055c1bacba4a922a53936487498f0eb2e6d. 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/INS180021519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec65426f4f8428d354c39ac1745196ae86d5e334210409d203c4911eb8a5bb89. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:44:57Z), 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/INS180021520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dd7afe406d209e896c32fbb6250e2080b9f4192d4398452fe8b740933d513d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/INS180021521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb18adf4bf41d610dab560a89193b6fd92be162fc630fbf48578a11ce4dd2f4. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/INS180021522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c034ab4fb85d349a704698bad4dff75ee2d26e9a7b578da865a4d1dc477cf0d. 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/INS180021555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17b9747f1e1e42f4aed5af05a0901313a6af78982beeae4571fc8dbfe958fa6. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:01:27Z), 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/INS180021559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1f119b82620d8e2182407a561bb24060b119b8baa90ea78332ede57ad70a30. 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/INS180021561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6289c3e7438a03fc4e478c1acf8aaa93ab3e40201dc9b10ecc5c140752b7900d. 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/INS180137138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b54dd5b2dc4ab0ef0abb5c8791fabfa98c56609a15a4e9809c183995f2090ca. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/INS180035026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc685511a0f99266a9362e14dd2a6471b0b19074e1d4b80b075bda905d03450ca. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:01:55Z), 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/INS180136822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd985ab5ef9faae7f4046e320ec30f57e4721528dca83864f2a5442ea6f5a5f1f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/INS180136824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ac600688ed83cd2a2a509675566c0cbe33f899507ec9b9c963e58ae34410c5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/INS180901817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c7e5870a7575e2abc7470c6bf24a80dba11f25410cbc1f0ef7be3999ae3127. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/INS180901818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14904c33744868b481094450556b42172bd83bb0f3074d485e208c60806827ef. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:00:09Z), 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/INS180901819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913ece482997fa48ca8eb7fd0cedd30d2dad4aeb3de24e8e0d9540ccba0632fa. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:36:51Z), 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/INS180901821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dc403b79f0e68343fd997f41fb9c9514251a8ab038017fe58e37aef519849d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/IND301300761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c553ecd1913c48f6ab7ce0bf48b2c53ddcee12f2e9a4be84b5777d33840fde. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/IND301300762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87651882a2a127515f8ccf07992147580f33185bbc89ec55156725bc8a1beb09. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:08:53Z), 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/IND301300765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7c5c3910fb34f5bb6cbada744451b41906f53c5a869a1c5199501096d164e2. 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/IND301300766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf7051d4350d625dcfacf707b3b8398a0fa70d456059605842efcb3c102a00d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IND301300767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671dbe084a7a138f72394cbb9ce2b4ed0f54fd2b89200634711136492a998361. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:24:16Z), 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/IND301300768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ad472a477882dd6a5fce3772da60f1d47a99c0b92bbd6f6722a82deecd5fe9. 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/IND301300198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf66d48709a7fa0a54f7a2357c5c782e415dac05dc721f98a728ccdbe116809f. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:36:47Z), 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/IND301300199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a043825c63794f13df6bea0d3b9f481a2041642e31af3eddd9ead8dad8cf688. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:30:47Z), 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/IND301300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14c2018735af2f615bce4a2c18c72a4000a7689076740152519efbcdfbd02ee. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/INP532000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca945f5a3e1157d40eb9319c04ae31f06ee806b0aeeaf036ba1969e657b711a. 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/INS7A1632022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ef8f3a7e0c021aeed0192cb6adf3b6710cac6cc26b1f52e3b2f847c8c24619. 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/ING121300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced7b1c950e51c0c077789a299581c4ede96eb9cc56ce2dc1e41435e088218e1. 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/INS189750119.