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 0x4fec2db6d63541a5897fdbb4ab90ac6f761bcc471bb6816db611d0ab21f32b18. 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/95f47ae9-4c4c-4e85-945d-e552d4af445c.json and https://artists.proofprofile.net/proofs/artist/95f47ae9-4c4c-4e85-945d-e552d4af445c.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 0x91bf8790483a18af9677a9c50d45808c7ec63daa781a8ea1887816578e74bdb5. 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/SE6XX2297687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c87b2e27ebaae4e67aac0791e49080bbda84599dcec463c5d90b46694034b11. 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/SE6XX2229534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb5b058f24476d3c5b86935d9a336f5993e44bee0b5a00601e0580968dfcdd4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SE6XW2279326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5956417f53b132a0e3b997b405ff62e70175d0a7f1fce0569be9eb57066d2a. 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/SE6XW2234145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d760689843e1e93e27a4e0c5acb03ffee78e7c2f2c1e77924d49ed6197d12fa. 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/SE6SA2245941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126e2e50d7542aa2c36c8cbdaed5a941d274c2bd6c35775c4e6ca3de12affdd8. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE6QE2235496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8b974471665eb50e8a4b0cb96a9adedf984f5c63b040b6b3a2a3bc3bfbffc5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SE6QE2213834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04340d7e8fefbfe24576b532a06a7aa0e265611332125ca757f7383df62d3f72. 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/SE6I32291921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70901f513f5a94226b108fa0388a1006d3edd4e422c60cf50c0cb86f66dc898f. 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/SE6I32270813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e610fda0488f2e73d5ba2c6b148a7d4f58b8af853fb779e31b4db50ce59cac. 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/SE6I32205506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa079534b4014424d207293057eb81c2b7dba7ff028d91223840fa34b69e5e2. 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/SE6XX2202280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35795742f90098569b92392f5c887c787346c9ff0a05544d7f2fc0e221a871b. 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/SE6I32249085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdafdb47d49f578739437aa5522f62b7c1eacf6411fa222d4307ca64f4cc21cb. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/SE6I32223368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed000b09be019cf47bd007d47f4d1e799d6c019825e567ab8b6dc71dec96df78. 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/SE6HN2238498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5e1f6441e496350911119ec44f6861abe92597f6af7281330dc3bfa3321b60. 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/SE6HN2214112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e205d2e5764362d09e281a3615fb4aa89801c4f132d8cb2d3955cb94a578c8. 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/SE5752264544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ceaaefb9699e7c97e79a15cf86c04ed4dbaae5a61295d67bedf746fb5961add. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/SE5752219920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b5b731733593a90401f4f05a1188537e2bf3e1ec964d87a4d86d55c896796d. 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/SE5BU2248754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ba11139868cf49630e5734a6287156f376f687a6b1716a5ab3b08a653ba903. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE62M2132365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b99c218f9a379fa03245a0f62d0e4b5b2735059e76bbc90f6e7e61193e44ed4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SE62M2110506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ff20e3f4c60e4204da14e056895805e6d4d5043aef494bf4c192f53e64a3c2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SE62M2103732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08046f037bfec7695d2aaf883cde5fe21e63c882791af8715a9505fa4820543. 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/SE6XY2141403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12febff0960fdf675990c2da29f075d0d4f193b7311d9f15fcb82798baf72d76. 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/SE6XY2120111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c1bca417434d210317ca4841409698a48e33fc867e7f778bd329994abe1104. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE6XX2197633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e89ef5fa25f720b5405245cfbd87ab7f67c1272d49298d77e91594e6936d9ba. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE6XX2153394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f49abd39670e7393d4445a0d89d8c9745bcee119365b5197e3f5893d8ac93f3. 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/SE6XX2132174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411de77ad82bb3a3ab21cb7c555138140131df46902ebb12ebdde525d30a2757. 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/SE6XW2210838.