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 0x5feab1f07032023213e40f4fb67f18eaa0a92b728591ea12c2b40c2a448bf1bf. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0970aca3-f44d-423b-817e-eec7ecd8f280.json and https://artists.proofprofile.net/proofs/artist/0970aca3-f44d-423b-817e-eec7ecd8f280.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 0x78c514490920e3ccc02468f7f11145b5b023adf6d1fcaada768bd4c82c05a0fb. 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/TWCC32308255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1c2db4e5c70e32a94fa5553abbb77695bef31733a8085bb1e8b749d448ce80. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/TWCC32318462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff74e3a808fe58d2f3152ad52f78c7be0a198cd01bf53140f9a86c37888817d9. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TWCC32311589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158bd777284108d8ed6770314dc92be57a54a466e7d735b1875c6166cbfd7427. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/TWCC32318464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b421953cf76c180a98dd1ac2d1d1844bb81e6125d767b724365fd87556dc505. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/TWCC32318463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62df221de2af74d0ee04d2c59c2e93bb3312dd8ba8deb3cc214f4321b18de56. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TWCC32310972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4da711db14bbab5412431207557050fd3a8feb6d365162913406a641f2794b1. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/TWCC32311345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1dc4169f5d51ecddd381f8bf8dc81afc6ba61f65abc3f47004c5f3aab63949. 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/TWCC32121039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a3602a4828159e21b84fa4369e5d6aafe3aa2e6531aab50d8346118829db4c. 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/TWCC32105598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1fbecc68e68e2972c0431dba4b9ae05efea7b1d3aa2d552de381b959ca1b13. 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/TWCC32123266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d09eadc6ae1e7596bdb49c6c2814a96aa9885e522964e049e83cd972db1a990. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TWCC32122641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638c9d64771055f41081a5cb15509aba4612873d685de9c5509604016d1379cd. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TWCC32000827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19be2b2d28716d2e762b51afb478ba59e76c4fdc68b2e02e61d4b327e1b01b59. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TWCC32004091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40238bdf494bdadbc1410f04338ddcd43c7c34473bfee460a34009eb719a96bc. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TWCC32004090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba1e6a348ed241cfa00178aa579e9af9230cc5591b3f17ae9b1ce2bc6e1f97c. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/TWCC32001585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407c3aaad1af4932bdb965b228e58df0d3e2680641e534b3f469b20e565d25af. 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/TWCC31900664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c89eb3414ee47c2d3156db93c66658aed1b16c584a4d1223ad73dbb1d4f8567. 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/TWCC31902275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0d340880a57ec6fac24268a362e227b6b7287396d4e8928b7da74636164ca9. 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/TWCC31900836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d403f747553170fd3bcebd84503ce9535b43020d878f9d6fe613feb1550f58. 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/TWCC31901439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a118a1e8a5bb4cf9c89070d2afd982872bdd680068b8e12075af1d98983b9a. 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/TWCC32004514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95008973e10440fcc472a1357796923e1ecfff8c7b1c3b386d77ce15646a2122. 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/TWCC32004515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65600ff5dd9a55c035558eb73328978706e258abd3dc4fddbea6d0cd5c9290f8. 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/TWCC32003429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbdb3dbe0b170bf8b35febe6309d6c6b2794e6f686d3909d1a284780f8f380e. 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/TWCC32004516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21811963f645293e74175dbdaa661937e5a95b26018aba50c2a6349aee1d3280. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TWCC32000983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf039ea4fa83af7efb9097a969b39c886f06d08995f0069c285aad38005b72c7. 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/TWBJ51700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0034ec718523ae681d94c461ef9e669db321c34ba47c28a230a61baf344af676. 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/TWBJ51700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091158acfa4897c826dcd1a89c61cb043178c2bd92c9b3d06bbd1b6e2c96e2b2. 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/TWBJ51700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71f49536caf422fd402f98f49fd5700af04b0443746cfc7cb1add16ca563cb8. 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/TWBJ51700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fad2c763846ea384164e14ad41c1788cc91d5f491b93b2a1e2ba28906157cb7. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TWBJ51700013.