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 0x1087b31979c7816237881d48ba95efb30ba82adeec97aa6719f0fd3894e80f64. 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/0bb15b16-7e7a-4989-be7f-9956779d51e9.json and https://artists.proofprofile.net/proofs/artist/0bb15b16-7e7a-4989-be7f-9956779d51e9.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 0xc24258600b8931828d65bdea9dd4eb7f3c9be44eeb6342aa59d63786f282f796. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/ZAS370700110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347d7953f5280ab81eaad88740b2bbc595c48b242b7897fb02e13d7b21b28771. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ZAS370700112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85937ce5f967ffc0ab627c538c97d50748cdd4123dc5ea0a1f0c0424fcb8be4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ZAS370800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929a0d01abc6814dd4cb9ce9858415d6b8305f44be87cb7bb67645ecc56c9132. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ZAS370800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d52c82b79170ac58a1e030a035470f0e732b45d03a469618cedf0715de7ed9. 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/ZAS370800089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064648fb4de0415b945d9a6909f272468123da57897e108fa7d4d827816149d8. 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/ZAS370800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd200ccae76b702899bb878a5bdf968359cfc0a47686b4bb27e3857de77543bfd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:39:07Z), 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/ZAS370800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454bbf2d86ebe5bad3fa3cfb2f8fd5be5a8a4eb0ab1c48ad27c66f65da9097ad. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ZAS370900195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e05ce51cc4e331fb772eb38cf7255223e3522f3fb7d0770117f5e9b68fd203. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/ZAS370900196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b248d2a1c87e45b3040227a4387cc718e539756a4f54751cbb03bee93bf9097. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ZAS370900197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d758f8761ef9fed1cee657f7f033664b140da39f9d13a86cb9175d96034281. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ZAS370900198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c77e03ba4e5e0be4201f9d1dc94cd3a9df51ad63b72ec6eaf54074d0178682. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ZAS370900199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236cf6b44f338b4b4f67d787aea87ab7dec10129cdbff9e75732cbe2ac57b314. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ZAS370900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e2a494bb2b90c43d013a5158f9e3c0a25a3a0906628575c291e4c4bd981c07. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ZAS370900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaccb7f0400566de6b69bab3ee32b46960c5f4c683b3fbac20f6dfdcf38e2661. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ZAS371100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e22365efbbad442b842d69a6acad39b947de0e0e30d73ab5bfc8cd2397d108. 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/ZA56E1402865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b016811b56538624a3c1d87bdb9a8740665f8e296c9d793679cf4fb4f2dac6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ZA56E1402866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0752e4058571dd2334d525e6c679290ce1c8fdced16250d9d32564adf956b2c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:05:27Z), 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/ZA56E1402867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6025dfefe8a3e3eb339372e440d06e5e2c38cac1fc98380b4f295627302b31e7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ZA56E1402868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051d31dc1167211d3df8653769289c72c2705ac57602f935c7a71f9cdfffad80. Chain 2 (Bitcoin): anchored in block 957648 (2026-07-12T03:52:24Z), 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/ZA56E1402869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0826fa349243dc088644ab484f38939675997124982c90ac1ab05905fdf42390. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ZA56E1402870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af02cc433f9d68824ee83939867eeb20f71d0c36077a479ef565b6453fa64ec. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ZA56E1402872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c767a2e0835b35212d95a2f91d8f47c344d60263bb6f5e9b9e1682cc5adcf7f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ZA56E1402871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c5968e7916a6dd72b700d67360c8b14c46ad766638e4d8243f42ae6be320d2. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:04:41Z), 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/ZA56E1402873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd912a07b30704f0db08ada96034378fee9f700374ef54b7dccc09418317d975. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ZA56E1402874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf050a6b32fbd708faeaac068bfaf52ae3b4ff54aaa3d147e65671f21a37edb23. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ZA56E1402875.