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 0xcc8909d760343018dc33fb7f5f9b5bf5fa3804b9933139809a81ec08fa20f1ff. 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/5fa4170a-6002-46cb-9df9-0e4f55ccdd4e.json and https://artists.proofprofile.net/proofs/artist/5fa4170a-6002-46cb-9df9-0e4f55ccdd4e.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 0x9e09c9f52916cebf5e3756034174efc083d73ef51508e49e5d9cbff8aed69c4c. 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/QZTBF2464208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57198f30467f7b0e4e0aa140ef73f921d3b65d21b2f838fc8314e02ad37a01ac. 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/QZHN72327979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d3125ad663deb82ace37e3b34379abb47412016e32a0ebc066d6273a40bc51. 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/QZHN72326039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614e76fd66439d0c78e2650810235c1a776f0d241ab79c8afec0f2d37c820e09. 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/QZHN72327976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614e76fd66439d0c78e2650810235c1a776f0d241ab79c8afec0f2d37c820e09. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN72327976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d3125ad663deb82ace37e3b34379abb47412016e32a0ebc066d6273a40bc51. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN72326039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa65f1e679c59238a85b6452e57ca5887d9286033da58e7f197275031b967b9e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES92279808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c591cba237b50b7e83944e051f1b63ebcc5099f466837894c8465ce0bade47b. 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/QZES92279809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa1e8ac4a1f47e5e2c6942db29fc8a5ec560089b04257ad75acf01cea7e6ca6. 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/QZES92279810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcef5842404d2bb615d603efc181b20d85e86b2afc41164b04eb657257bc924. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN92141757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b3b6825a9e510c94b32348c9ac874090b00324de9119ff142ecaf690bce084. 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/QZHN92141758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfcd6d7784147c63cfbf7ec8cad4d9cdd5044670346db118467e7f904ed03ac. 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/QZHN92141759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72036dc94fd7db0a8af7af8d061207b500eca902d2a6065af96ba5be0ee79131. 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/QZES72007151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc2548784a851169fd2a5b65ed2b830c4cc42ad4d6c74986bde0337186ade9a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES72007152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ce8e63744b2af8faf86d0611f488a802547e14439e295411777541d87ecba9. 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/QZES72007153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fb18d1b6daaef7efa662266a3093280b3d391af17d88dcba37b0dcd77b2411. 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/QM24S1909206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9026c659ca4dacb4cdf19d2cc06265812875f24946831c3acc2eea7653dd91. 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/QM24S1909207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352c9c97ae2461476b51f91fdf555a78f6db00b2a93b73131d362fab624cc4fc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM24S1909208.
Indie / Pop / Folk Compilation: July 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57198f30467f7b0e4e0aa140ef73f921d3b65d21b2f838fc8314e02ad37a01ac. 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/QZHN72327979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb950047640c7973ac1dfd102fa840a91abfbbebc9bda4a5ba4208544626d7d84. 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/UK9Q62300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693d0498b74d5d246915dd2786152ab829245cd83aa31d17a4b1d5e5464cebde. 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/QZDA52346237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a505ca6d5808422ea445aa1f59a832035f0b7a344426494a08189f833ae8e6. 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/UKTPT2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ef8d3c508e9db93c5f73e705fb9a150e21e1e5a539f3ac2891fec7e9f59a38. 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/CHE482300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccdbf5925bee76e0ae16568ba0eab660f844544e50726ba5177441a0ae8f64d. 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/USXG92300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614e76fd66439d0c78e2650810235c1a776f0d241ab79c8afec0f2d37c820e09. 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/QZHN72327976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1ca0a3f21c1f9357f0ba26d71c9273bdc501c89564af489b2d007c421a8860. 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/FXR592300236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9232fe6e14330b34fe374b8d779d870914549c7e921fc46710af53b7c96b5aac. 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/TCAGX2391524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c12b5cda81899afa9e86404818332bb0b3c980406372a691e4231a2705844a8. 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/QZK6P2101769.