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 0x9d1cef0aeed4bfff630f2f230b635aaef007352f0dc772c68b1415e1a392b3eb. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6fd7017e-8241-4207-9d08-d812b2464fe9.json and https://artists.proofprofile.net/proofs/artist/6fd7017e-8241-4207-9d08-d812b2464fe9.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 0x2b01a7e91bdb39c2fbe459fd852a079d434ee883878788e8a6398e52d61f6055. 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/QZMER2067370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc74eed9887213cbddfeb0cf86377715a40ddafe990033f49c20152fe64eddb. 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/QZMER2067373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb486f864aced09e0ff1642731af748433e2d2871fc4ab647a56ab213ba74824. 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/QZMEM2065933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb915757abd3a3aed92d3bcb7c535c48298ec9f77db3de64b294ef9423cf662bb. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZK6K2091372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c5f493d081aeaf7ef36380cb224ce56a0c8f4571ec9277c94dc962036bcb46. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZK6P2091589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad990a9354166eadc075ea2f2611fd4e2c4a1b1f7b8ec655b9708f95d422639a. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZMER2067371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4327416c13dc9fa32127633f8309a3fe6d84ea4617877f3959182983b2a501c0. 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/QZDA51998397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1044183a70e3f336dc2a132f70210e1d22c99f3eeb2260f249cac8ae8efc3822. 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/QZDA51998399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43a32c2f6be7d0afaeb78fa26b1b782f99a1c76ed0609b2339db81a3331a954. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QZDA51998394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab079a6741286b81294bf8ec2468967d8331867fada4aebd8f872b527f36c57. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZDA51998395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e4d81f26a576544fc453aad54da99762a3d10490165b5b99d0f60c9527f4ab. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZDA51998396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36361964ef9ffed03bbccf831099c829086780c8a461d00070e6588f378d5b3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZDA51998398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922ed01bfd2b554db473231dbf64ea31de4352f81fe8c9dedb9bda505abfcad3. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZDA51998400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010b45f36635f58bbf6269f99ccc55c65caefecfaa9f02f3ca400344363d2623. 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/QZANL1787586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5aba4996cc8f896c51884a38244656b57d1b06d22a9bdf6e3c282c7650ff212. 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/QZANL1787588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8192c1765443052e9bd4d13fcd8a3bf58f7be2d67e20fa8fa79dcc186d83f1a8. 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/QZANL1787590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244ee9d8d27945bfad0cdc0c59b44b3e46b826a37619f77a0d6c092ad2ad264a. 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/QZANL1787591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991a02ad23ee40cd5e38bb98289cd70b35a731c387528f9b19444f34ffed3019. 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/QZANL1787592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200914b3625ebdf6bdc7e9208e58f075d444bdad212918a189eee30850e59c03. 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/QZANL1787594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5e32bdba79a1a71c8a4e602cc9fa909d1ed15e6984ef7611ebef9548216a40. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZANL1787584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138a788f2c7494a88efd06e9b8a61d9a74133fb98d5f4471f115f5bb9fab81c3. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZANL1787585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dae6a77df809bd5e3afbe44281de528fa7edcfa787dfa4a23edf7a29d00393a. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZANL1787589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba92dcf4cee1d823a9a9904b1234fe61873edfba7466b54a9463371e7aaea2c1. 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/QZTB72239573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe1fbded0969b4c7730970fdc96ffd1a73d75db7408374b5ba2a496e946a801. 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/QZTB72239575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4965b874711392f8fc36f5100188b228fecac091bb5722be30be25f16ff466e. 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/QZTB72239576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766af1c4419c145c4bb5f3b00a3b09e4ba943f7db2bbefd24473f0fdf093e8ab. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZTB72239574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60148dca2491c11662e73e17b2dec28cbc27f6c8216fe76f59c9d148bc45e473. 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/QZRP52123874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869cd2f87662a6ead1fef1f1c58a0890b7ceb68f3e0b10993461531123c7c7a3. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QZRP52123183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8db7bb1fbb8f815ed21d1f7573f637ae897ca9998deb4e8253570eb6fb6dc1f. 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/USHM21981637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490f0bb2ba6ba755512079a53eb567a06f61151a0bf18678c9b87122fe11d047. 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/USHM21981640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2987c985bd7ea07d04dec293fb0e2e902a45f08876b723d1c08c3dbaa7c334b5. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USHM21981639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292ce7840983f213274ecdcf3abb0ac3f3fcf99537be7c65224713e830bb14b2. 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/QMFME2032876.