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 0x7065122678e83d3a9eff6e0a56917a7445f6a5cc8392956c78ebcbb3aa97342b. 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/9c535ea2-1914-4aac-81fe-469f7f9fc120.json and https://artists.proofprofile.net/proofs/artist/9c535ea2-1914-4aac-81fe-469f7f9fc120.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 0xe299581ee0fc5cb4113eb28616dba371365348123088d3328260e440f3e4f634. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRP622300600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e5e1fb6c882e5478d2c91f54d7d637305a6a2d9a8ae882c0d512b2c4b085da. 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/FRP622300610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841dfea9c3ecb5fcf9d3e607966685e8a03d395726518d31a787e4ddb18b299d. 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/FRP622300620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2f1a7b9d984efffe9f4a66d5d26f02ff233b3d5d8bb20396bb243f1ce09fff. 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/FRP622300630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfcd11cb796d0a51a093feab7c56902903c13d41855dbe815218b39640ecb48. 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/FRP622300640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8876e17c0f2f3c3f6665b81f81fc08ccbb619469192aa0b5464c363127262e5e. 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/FRP622300650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ddae2f5ac7684e4d114302fb01e03de48fc833c3eeed8bbc9c20786616d674. 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/FRP622300660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090fb7a3af6db6dac8c8f60f60f9653edcde9cdc32b5b603784af2edd72bec8c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRP622300670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7904b71c1b4954f937e30a53a42ca03c20336f3d054cec4b78396bf5e8cb244a. 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/FRP622300680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd761ff9acf591bfcf5b5348e03f6480e7382b4ccb2c81a30fcfda674dc5f829d. 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/FRP622300690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276c5668552229e4d1f88b56f598872b95295a3eef4d4785dd1d0b6959495e83. 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/FRP622300700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8ec3affb4ba29cfcb638040f6a10dceca5de0881fff3b8f28adacc5e0cae32. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:22:32Z), 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/FRP622300710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29f09b6734688dd22314ab25a70facb2d292b6fa54910c83f1f219e10fb1334. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:24:42Z), 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/FRP622300720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b40fdfdd27c22ddbbb6f72aff323ce86331cc81e7a032bc321c9a40ccbb62e. 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/DEZC62415365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1e65a48e372012e084a09cfc31f58b831588bc6ab12ca34d980a960fb9da2a. 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/FRP622400850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e5e1fb6c882e5478d2c91f54d7d637305a6a2d9a8ae882c0d512b2c4b085da. 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/FRP622300610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfcd11cb796d0a51a093feab7c56902903c13d41855dbe815218b39640ecb48. 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/FRP622300640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe299581ee0fc5cb4113eb28616dba371365348123088d3328260e440f3e4f634. 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/FRP622300600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbceb0beee22f2455f635463571c00f8f05643e9b950dc655124123230dfc21. 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/DE1AO2220037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b37a32814c75562cbafd718dff51da663d73885d329dc1e72b174170a8aff4f. 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/FRDKW2108077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72fc334b8c0e1d31c085ba3a0c5eef1259389a810436ec62b0de87fc18b0f5f. 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/FRDKW2108080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755b0f2ca49f41ad2d3cbf4fc6abe4a643684045eb6a4a9c19274925eab0591a. 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/FRDKW2102452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a98fd0023a0330753a5c4dd2bee19d24a0dc25980bc2dc08aaecef976f34534. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRDKW2102448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d216ad1b2f3eeeb332c18c540e8611b5c10ced3850b82742994336da33722d7. 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/FR9W11921998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c49d52b73f487b36574f88ba60e4ddd85dfa177741d2ffcda82fdec7b6ac2ae. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W11922001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292a79964db2fc6b545669b23fd9cab4997cd530b1f0e7e24296278caebd377c. 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/FR9W11922000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9242a026e2c418388455fdbc5f0ec3f85364f6c316c4a33904d195edf9fcc8fe. 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/FR9W11922002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee5d722c8b5538c4f02d40d70c6eeb28c28163fc16579002275899d13663536. 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/FR9W11921999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e0f2189b71fb154485a1c586ed11bbd306f0f3806789c9c2537e57f0d5f564. 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/TCADY1861190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe4a0237faea2d812a15a68598cda85b6e8dd0d767b8393f3b272ee8d109418. 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/TCADY1861194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc7e86578b8d73a50c3398efaba32bb78e2b49c8f911814245c63c31b41537a. 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/TCADY1861195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd50b2d8e42d4cb079bda3e5ab037372a7a280a9d2e70822819e49e727a560c. 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/TCADY1861196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3161eddd18439dfc21b013301a65af95e3de4b8e7a31219910986dfc3df9f375. 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/FRDKW2105914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c8a0a566d52f64f1161ebc8c5f7ccc114960005221c7a04d5095a96425fdde. 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/FRDKW2108037.