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 0xb7cbfb711dfd4e28f8a237c4871a9f3bcd73a4485b4831ae8a51981ef31bfbdf. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34dd3388-f310-43c9-8578-7739713ad36b.json and https://artists.proofprofile.net/proofs/artist/34dd3388-f310-43c9-8578-7739713ad36b.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 0x32317b1412993641ba0d3ca2208c42fc57d2e6f93bc942dd708497bb49cfe5ec. 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/TRA170700552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05015efdc7db128099abf0366934b7e2aeb80690be0bf04ed65240a536f36baf. 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/TRA170700553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2904078b8b99ec8207eba0ce3f43dd8df2dee6f1e2345f7b75b8d052a6454034. 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/TRA170700556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e2b7598f1fec8b2c13cf4f6bfb3ff848158142ec24b322a54e606ad7e81bff. 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/TRA170700557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a75005d51bf78b02ef3742789b58ad142f9cb301f90b013ba39dc75cc72909. 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/TRA170700561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2c7441b7290f6b46bac2de385440bcb849c939fb181f7c0d4197caf4d8938e. 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/TRA170500324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32317b1412993641ba0d3ca2208c42fc57d2e6f93bc942dd708497bb49cfe5ec. 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/TRA170700552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e603c844d1b0558762ac37a327471e53c8925f614ee9fb617db54207c99cf3c. 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/TRA170300212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6a01fcde4bff01d656a25bfcff29bc971a434b5aebd39e643aae4a4987bc49. 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/TRA170300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fe37daca866a66f1b734462c88c4a700b9b31c343a29a8e38ce4f55083fb71. 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/TRA170500303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9018bb5cd88ad8f9a84f02a250cc92b0ff11bdac63703e463612ae2fb320e8. 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/TRA170300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0a50590e3fc76a9aa53254346f6eb22783d171dc699539c8198867ff6fe975. 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/TRA170500294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f98f05f536085d335206a75610c312b7f79215d2260b855013563bf9b38a4d. 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/TRA170300227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9104c95486097b51b4fbd2e32114bb3a3bb9f02265c359bf4421dc7f0409691. 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/DEAZ20500190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bee2470c7631c1f23b314b11f8ea1b6dc1cf98ff34fd94873fbe1bec17bdc8d. 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/TRA170600489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614d9b42ef09d64f5c90d4a13e27ec206564b19acec0056574de53bcf954efdc. 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/TRA170800706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5710a8a8a4392660e62f048ab1513e65146f2c09e44319b9c6e841b7bb297fb9. 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/TRA170700665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1af2ec7f5650e8553ed2fc9dd89862b3f6a2a0a175fa49f7832dddabe8060f3. 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/TRA170800702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11110eb48ad42c1c0284b23bfb6fa85a962d4844a6ca39769085f70405cc37e8. 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/TRA170700580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fdb09063d9b178b97fd219901df9cf5e9be58d186eede7ce1475c5e4e8d9a8. 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/TRA170800710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ecdc1bd1111b663c84f917d2f3ba46ebf26d9528fb3c4a9f4ae7fa88f73708. 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/TRA170800704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0988a52a31bb107d7a9a4fb7c9c57584f8f252b4b69dcd54558e1a64fc7a87fb. 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/TRA170800711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f11a9f26f4cf725dce8a23cae3f1f3fba6aa0b8b1514ae32d652d3f122bb2b. 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/TRA170800705.