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 0xb14b518e3a010d7b09008e25a68cdd54d86b1b1fe54b032de3bd4025cef2a868. 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/8072015d-8978-4218-b1a7-fad6bcb0b20c.json and https://artists.proofprofile.net/proofs/artist/8072015d-8978-4218-b1a7-fad6bcb0b20c.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 0x2347a4501644eb4e48ef23fd3f50012cc4c621270f05ab532e24355a1d168d43. 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/GX8UM2300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c85d27213c329f0365151081300e26be9f014c637535fdaac008bbb14498844. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/GX8UM2300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8691ef7bd572b86dae93146cb7a08849c3348f7137d66cfa84304e209e29641d. 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/GX8UM2300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03c4503cb0997c5e35e4334b68bda8f6ccc3c90011b9d3aa599b4b88e3bfdfc. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/GX8UM2300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe739b390f13f49231b5388d50c4c5607e60719dc2321e4ca54c47b626805e6c6. 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/GX8UM2300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0ba5adfda4a30fe3116997b65d45fdcd231c1bc16d8735bede1e2b05e8d376. 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/GX8UM2300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9df05151d2e1afc6a9a50e2331cef8d565d7eef8353023de11f8657d88962d. 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/GX8UM2300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2458915ebd8d567f3bbae1f5f2808d2277909212885c0dcf2159bf3527441c0. 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/GX8UM2300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76f68d0c13f36d203e2343c6660c98e1abd77abbea6dd72466820a2f585d503. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GX8UM2300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad7d2ee69ff1bbd759d5822e5fd25bee6a3fd50184f1edf3b78717c12b4ff23. 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/GX8UM2300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc530617233f488fbc817c9e500f5899ee3c414c425123151a6ffc34147e8250a. 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/GX8UM2300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702e92b8c927c1547b041ffbaa0b9f2b3cad8e9915abdb6bd74e4266ac96f40b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX8UM2400369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63419e9e45c2e6a5e3ada238734823a907aef72ced4b2547fe6bb17ee630fffd. 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/GX8UM2400378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6225b2b887828c85862c2b3c7745b7ced502944545fdb274c7dc5b537b5fd6a. 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/GX8UM2400380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66abdda816913914bde33d96cf225d0940442dc19db2bb1b2395fe07c3aa3914. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:17:13Z), 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/GX8UM2400397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63763866147889f636b6bbbe64cf08f060c142e994b2ecde8c18446617f13cae. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX8UM2400421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822b46c0ac10a6ee26a07ae0d2818476872ec16b23424c08622f0c652e0f6892. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:54Z), 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/GX8UM2400434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae9806a21a1691af7c353739921d6860192818dd78bec1df715f97ade52effd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX8UM2400446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea492c2f8fde6554164a3a508126df3f9c016027acbec2a5934f6f379c979359. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GX8UM2400477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87446891cdc737166a8e7a3b99f06cfd45d206cffaa0038668146e58aa72d293. 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/GX8UM2400349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280f0ea838f4925922e062542bab723f243188563456e09a881bee6774e3603d. 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/GX8UM2400352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff20229ad728dabd56a8dc09c314d17e5912919bcde061ec8a83b2743480265c. 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/GX8UM2400355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39104c1d6ab12c1f0e4718d3299bb284b34a755453171e92ef30498f41a3db7. 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/GX8UM2400219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9829f5cff86dcb8ae7c69a6e3aa06718366148b56e0cd7e2c9ea9276cb80ef4f. 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/GX8UM2400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c35311b3cb655b0c9e35439ffb25fff23f06ab79dc8fe4c40dbf1b23bffd87d. 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/GX8UM2400225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05be3b5d36f5a805e7fc639b87145eac7bbae2ff4b389414b17cf82ebe4d79b. 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/GX8UM2400227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f45c11480b10da609754b1355aa4b4044f90803abb2427d5cba1a4a023480c. 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/GX8UM2400229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f920c7319bcbfeef809eaf0052136ba338c4cbb8aa41a1fe57d65a47e42771d. 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/GX8UM2400231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc530617233f488fbc817c9e500f5899ee3c414c425123151a6ffc34147e8250a. 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/GX8UM2300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1858ea06ae186ec874c167094548f72f0fc0f90b29f21b7aa4b10a15bac98b18. 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/GX8UM2300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eca1824044bacef0842429b70f9a3f47f588744cdd919950663881e6c6ba91e. 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/GX8UM2300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0ba5adfda4a30fe3116997b65d45fdcd231c1bc16d8735bede1e2b05e8d376. 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/GX8UM2300102.