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 0x077f6f0f2ce4f07dc1a1d120af083ba16ed63425d5d8982c4bfd0d286228f357. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/512df5b5-2a72-4430-88bf-3b336cf2f78c.json and https://artists.proofprofile.net/proofs/artist/512df5b5-2a72-4430-88bf-3b336cf2f78c.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 0x29e3e96339d4331892d3cae770f78d53f392e13d121280e0546ccc61b19595b4. 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/QZES62275665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5860ead6bc853c5f29dea3ea5c146a659e082249769aa2accaf543930a91af3. 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/QZHNA2360927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b474537cdbd434dd5528e51f8b381c9a14975beb7b189a14f1bb5912388f18. 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/QZES82373606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3866f7297d34450d63a734f3531c21a1855d478f1abea607c1ea6ddd67e114fb. 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/QZDA62355376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03818b7fc5df8bcb1011bc4986f00ea40cf21664656ff953eeee4f8134c93d2. 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/QZTB62218064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde203e008d6fbc81b8203f7485074b7996a4dc7f57b9ad2b44de384f4542ca4. 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/QZNWW2267788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285646a0a7213775685d5ee4e35e00d7649a8f8fe3792c0d3597ad7f1af713d9. 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/QZMEP2215230.
Sjunger På Party (Kaotisk Eleganse 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce028f9c0beefc23d0223c33dc41a40ac9fb8fcbd262247892add76ff58b9df9. 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/QZHN82236799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51222f995373132436632a7f8d807d8ffa5eaf13fb898ec2798fc08ca178ba4. 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/QZHN72243560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53050ecc5221c43d744f3b60f5743f1beb5bb8d82b0dfda0bdcfafd1f0301d7a. 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/QZHN72243737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbdd7d2e6ac68e9e8aeafb5f544411abb80e24a08de75e90b0dc501278efc4b. 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/QZHN62280810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481f5bc9611d7b4cee93298d07a62cfa5368d17ddd46798f141cb5c4813eb1be. 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/QZES82263873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59b9d1572c6fa1a14dd13dbc2781d44a1e3943cddb70df07b088c45ec0d4590. 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/QZFYY2234462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb02ba76d578e683a870604199a8a13fdcf462f71580b67d3329801290ae1c45. 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/NOQRA2167020.
Skal? Skal Ikke? (Pick Your Poison 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecc45f0ae236a6d4b5c55412e36241e14c1ecdb90c46bbd5f76194f43187216. 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/QZPLR2184224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd3bc8dde5ba5b4e5d05dae574de291ea7ddd4a6348c56407e7f5e4d4ee767a. 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/QZNWX2113348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872eb85b30446d98818dd7b8250b134cc49d51ea675a1fa3d6a086fd7be884ba. 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/QZHNA2118928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8574d827edbb87f7a3e7327a0d13ac083701916a0e88a60e75b800ebb2016279. 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/QZES72127121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a8e792a85ad8473bb7ca7b0c14e5b325524085087ff2d6bc78fa104fc8857c. 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/QZK6L2427394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278c22ee1c0cc35a5d9fc1841badad06a10b72410467fc639b855ff189ca3eed. 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/QZHNB2490050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c76da1518526c6724d2c4fe8b0b5d45bf4bcb997b45db1461ff4ef2f97ca80. 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/QZFYZ2186622.