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 0x2313478fcb9ce08d3f255a8027c0a1449f145d11957a8bc213cd312713bac211. 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/df7d53d6-e091-4623-9cc2-a03a0b82081b.json and https://artists.proofprofile.net/proofs/artist/df7d53d6-e091-4623-9cc2-a03a0b82081b.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 0x6c127b36c68e227796a69604056b31190973ef29f3cb0f8d3249ecea9218ddd6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/SGW502354612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c2b72512cac55c96ff7f6edb3385934130703c6db425908a8f5dfeec39c855. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SGW502356283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea543c5ab6c473cdf22d220ca8d48110783c369c4f0f5be26c414e111535cfb. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:44:30Z), 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/SGW502356717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda83bba060695c99bad2086d47ee98ed0a9e9ba14f3f0326da0d415116802f40. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SGW502356711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bea5ef6e230396989bd46f997e1986cdff10c8609c97e92eb3a2c9757f705d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SGW502358881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c68a0a62369ec635a3b719160d4e73a0ffae9a61db516b687cdd758f1d247b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SGW502356714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67636f5dc9af8c0ffbf3c01668a0463d358becf7af6e47ebc72197cbb636e900. 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/SGW502359219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893a94084cd09c0c06909fe5d9df2d80b165953e27d9350de77e6048669dc960. 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/SGW502380592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9794fbf3190649fe7899e51f087aa5ff5c1a83771950493d7701ef17d1db7e04. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SGW502387395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bd24c4ad5c3323f9fa92b43ad97f2cbda893a3cd2f913d6966e2f8d76d3212. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GXBAV2438575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d639e2450138be6084f49ce588f8d3e9a0e668605df2119f56e1946a478891. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:40:36Z), 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/GXBAV2446547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13733914855cedf52b007bf6c60722faf5dcba6aea344b1a076affcf77fe1c14. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SGB502421805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4b82de5d44df93c64b97d1a23e1dada29ffc3311c962774f19f3e5ffe23ce9. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:58:03Z), 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/SGW502423985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb9905370795f378149acfacfbebb8bd4442c232678978e70a790e6662ce6ac. 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/SGW502493325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e1a514cee3201acf279de77d1178ee4e48a3efd4b0eebc2d8986e707cd4af9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SGW502493311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96a771d727d774698ffc7f1f89e82fd6ae81485adf56e3967cce28ffc079fdf. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:41:16Z), 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/GXD7G2404486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acdfddc75a2c42b659d63b02795454a7dc77c844a6cbec96637a8427210dcc0. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:37:04Z), 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/GXD7V2290538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2ce11122d3ffbc722291ca47fb4c857ef7fe3bb80100919c6c6b6241517a97. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:30:22Z), 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/GXD7V2539676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5b42aa1231d2624dff4a449c2af52125bba16039486666e6d6ef1fa9ecc17c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:39:36Z), 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/GXD7V2582214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48311279fe8c36d3b3ffd322edc71df4ebb36ec48cc9702f6bd05bceac6cf15. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:30:16Z), 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/AEA3A2165882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de87ff432e87ab33ec2fadf8596ce766defdd77ab26a4d7bdcb3b4983d1e21a. 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/GXBAV2160486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce03d8bc4e181b93e28ef3018bcb7ffbc1e382846f2e55f1289abf31fe8e01ba. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:00:41Z), 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/QT5M32546899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3abdb4a9b7aa9b5517b65b71e2176bb59070a7b3fdcfcf18c1af45fe46bbac5. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QT5M52561759.