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 0x58b041737383051be8ec7fcbbf7308ecbc987ff39a322d83272c838c240c452a. 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/0d714397-67bd-4072-9ace-fa9d942e8dce.json and https://artists.proofprofile.net/proofs/artist/0d714397-67bd-4072-9ace-fa9d942e8dce.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 0x222efe53d1b6b8ac5e81cfb3ecbc78e70d900da8f42c54cfb282c200f61e9c2d. 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/GBMMS1411005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490dc4466f06d87778be13235f5ac4e65c0a0b6fb6faabecba3068281796530d. 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/GBMMS1411006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc11ca0655468434a07a7b0c96050c549c5a879d56b58f4b17b556f845bc1354. 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/GBMMS1411009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc717899aa5a6b6203428fa5c39459c01bea164d35fef2bd6e185240119b02ad. 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/GBMMS1100271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3f49d42a992c368d4f05901bdd2df68b2bb73dc8122739bfe00ae7b11eda34. 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/GBMMS1100273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a44e472c459c162a70802e2c38bdb85b6f325211807f99abe675eab7904faa8. 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/GBMMS1100275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f2ebcf66c39b675a47e05731e1405f05e369ed632e2b2a6c03f76791ac81ae. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBMMS1100277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9235a72803c1796dafc9f6f81384732b8c436e8217fd6738b8b8c931b73eec5. 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/GBMMS1100278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0d415645f1fd340575aa8fe4bd0986e01ef63806b37804b517dc2ac5906ede. 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/GBMMS0801127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cb045fa5e2e5891daced55ee8a130a045811fc5f18d32fb9493d9df7e68add. 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/GBMMS0801128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbe3d61b455d6b8d72891bfb6bb2bdf37178e0ba1ad30879a1deead41018e82. 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/GBMMS0801130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63018cba6617e4b3c9329dc953975a94eab162936fd09e7a7743703d4c6cfee9. 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/GBMMS0801142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d56654203b1b68230df9f896b87a801c6e83fa5c942c3d9149486dea33ea38. 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/GBMMS0801132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3cc37e4c2df10af7387470fdd9adcb662b17f62733401c99bf5e76169a73ae. 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/GBMMS0801144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488e073b4aba83c93f05551c0c5d892b6d17662cac741e9362a4f6db8cd66a50. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBMMS0801134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994a15f16720a3c1e6d9d11aa6050e228402d53e33195af1ea04a6e569e41d3d. 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/GBMMS0801146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d807d1253701659ba568489848a093c03b22ed0bc83263a3bb3beb005a92f6. 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/GBMMS0800166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896e9c585c429f620347345f14046a32350f2e2210c6e217f1f971a8206dd242. 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/GBMMS0800168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64eecd1969409281349f83766eb82c620d394028e84a98c68e8b049d96815c9. 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/GBMMS0800167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaca4d4f035d7410be0fa6982e81e544b6ac1169a9f4f6ba60b36f6ca551338e. 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/GBMMS0800175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2aaa849b401c49b3efa5bd5d5355bce290400253391f39402ec091ed674828. 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/GBMMS0800170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d08e1d413d93b79724c141255f14cf5541c0b2ee21f74854e0685a3d8eb41e. 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/GBMMS0800171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88034aad62021f01e19b00e81bea45b7e4fb3d4c1ef65b75de0cca473c3e483d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:31:28Z), 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/GBMMS0800174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b9154b65b1f0250ec697ff2d31905da48a5e97a5a86b2fbc7b2127e685fe8c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBMMS0800176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cef57939acd0030cebe0670c01438e8e8868c3fbbcbb5a1ecde8ac9a669031. 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/GBMMS0800172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371d3dc5c3337fa7d44395dba581fcb051eeb7ebe46bab9c3c396d1ab3f833ba. 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/GBMMS0800173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62225503299ca89fa9d0ef0212bad947684fe71f6fb957765f1d753b3abf6dff. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBMMS0800169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f745c8535a847f1d1f13b4588984ccd5bf06072d4360ded41b801fd0fbcd379. 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/FR6V80613971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc541adfa99209c2574df80b277197f3d42a8a14dc6d0c1bdd37e8647a029d502. 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/FR6V80613973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209398bd76d429a7a66acb95ef29788ac7e25494f40d666377feb144aa20d39c. 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/FR6V80613974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb696c5347f466650b379057ba0804bd4e743144ff38fff2d66f9b7ae08bd856. 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/FR6V80613977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f50a29a1b80e1ad43c30eed5f72cd111adb79a479c5d343a14c98d6d936fddb. 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/FR6V80613979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2014e6d8d05f29f375553278c0810c0b370b4b1b097e46ee2e8c50736c23251c. 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/FR6V80613980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fb209ad2edec19d90d735b4bdd2679cc3d688876ca6c329609a382aec24232. 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/FR6V80613982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371d3dc5c3337fa7d44395dba581fcb051eeb7ebe46bab9c3c396d1ab3f833ba. 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/GBMMS0800173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5193b06f57dfd5bff51738e87b5c17bf699adb25c9f2a132cb564f301c45f306. 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/GBMMS1900226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7fd98f47c5c6d26474eeb4eb4ef822350a12d5615557ad7ca61af3b41ce66b. 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/GBMMS0800178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64a85e9d56eb3a8d46996a96eb7786d30fbb001813e8892996de8b28bebf9c1. 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/GBMMS0800180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d807d1253701659ba568489848a093c03b22ed0bc83263a3bb3beb005a92f6. 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/GBMMS0800166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c268ea588d88cfc7cdd16d0bf484613ecfda16c1dfb75ea2589a96c0873990. 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/GBMMS0800179.