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 0x45c0bb53afa45fbe42b0547c7873751b380fa400d23478e909f694ee5ec1c321. 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/f2559cc4-46d5-4337-a3dd-46380b0d52b4.json and https://artists.proofprofile.net/proofs/artist/f2559cc4-46d5-4337-a3dd-46380b0d52b4.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 0x8673a4396a91eb5e70c1c7b25f17807701360286c89c3e602c0b0f454345c302. 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/ESA011407560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eebb61adbdf475c38792ad13e17b0db6f8a807bbefdcc92200833b340cc19af. 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/ESA011407561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e816fbbfa6c26445092d682a8df3a7e7816211c5338b6e06373fca065d6f0a. 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/ESA011407562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1469e8b62a445db770c072dd15612f1c62331f26e9e05f5bdbd38ff119d8c4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ESA011407565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463da1fcdfbc86744544a4fd45c635546a27defaa6d664a19f01f35e89b94425. 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/ESA011407566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64c1e48981950b8f11c80a2e90c9acef8023f2db8fec33197ea24a4b99611bf. 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/ESA011407568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2d66483d1505f3235052505e0208e4d8b99f0e0c31adc907c46c5ee8b783c0. 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/ESA011407569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9109f5463b0c089b987323e80908bf7343da51f8e0c9b95040b7f802ab57247c. 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/ESA011407571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f327c97916eb4cf7590705813c6767b38925bc797f12739472e1f17585b940. 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/ESA011407570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce63db1e67f207c0839b48feb51aac61300c93b5592030c2f6c9b975f1f4e7d. 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/ESA011407572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c29754707ce2d27ac69f35e040dfef3bb91493b7b32b5248773d0fe54c949e. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USLZJ2076168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59c2d363e6d25f6ec325a3c3fddbba015347e8c2eb773a4d31e9173d0c3c798. 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/QZ5FN2043637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f287ed374beb9da1f38c0f66be0a5a4f4d7d121554f1be0a89876cc7b0b0081. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBRKQ2017741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa140103b74b61872794fc512362500dd67445e54e3c0e0ca695260681249382b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBRKQ2017732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e989a5f5dca9abf37b6f05db76dc44f1cf0a7097d84d79fbdc1cec32be8de14. 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/USLZJ2106490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806501a05c4d510ea103b906f24d6764e19068c23012d53ade5d7f14463a019a. 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/USLZJ2147547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342448a83f0c91c92c037ce26b886b0161c93087f20e532861ba1c8b0a414cfd. 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/GBWUL2114690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06c9225fe17b2ff14ef4b101adfef93220a2cdc40ff89463ddff0f7d5ef18a9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:06:49Z), 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/SE6XX2172129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df1e74690b4ab4d30bb489fbe3e61824eae671373f2a4cf26fe36fcaf8f3db9. 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/QZ5FN2200906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cbd2aa66d70eaa20149c16a1b69627fe0eccc5d9f12d7775f82c73b5b2eb4a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZ5FN2200916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237118095a904d37c1151a005d728bed0f5b0a98b6a6e334d76f0e954f4f366d. 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/SE6XY2262704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237118095a904d37c1151a005d728bed0f5b0a98b6a6e334d76f0e954f4f366d. 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/SE6XY2262704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4618b4d7d9bf82a3a6a6201449b32942242fa7a2fb2aa346737135576d8a08. 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/SE6SA2354845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b81dc05221026608d40e1bacc43752fd310499bb4ae033b67af928367732d4. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T20:42:10Z), 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/SE6TI2351967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dc4d531aa8759d21ae682315a0a310db209b180d8f0d2b2890ee56be298451. 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/SE6XY2300418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634ac924d28774633a9db22f6b514a0f15b07464f92ad41a651b6fe757b2aec8. 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/SE6XW2309775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda07dc0dac91e133e66f534e30d1ba7253eeb0215c9671600d2c4deb26b1d0f1. 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/SE6TI2322139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe528eec997f3ec055e8539c74591e84c4ce870898c3767607203c3d6ebf48b3f. 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/SE6SA2388324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44599a2104a97c3d2d95b2e8c4ad5c7bc0446833a52025477812da35bd4639cb. 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/SE6TI2344386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9e49ecd0e57168d94e9d0d63651a630f0fc0e44f58dfa7402940d5f8bd1eea. 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/SE6XY2593964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692642c92e9d35779d7272856844371cabace316c29a806dd072d408af55d095. 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/QZWV32527270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda18f033343c15520e822dd1a086b5d6132b175cab69550e5c2989f668379a4. 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/QZNJW2465929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245c3e6cd48cbfe3e4023287120d1f749c267961cadbbf8af4633ca91674c5ec. 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/QZMZ92055920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f8ac6f26f1fc787cb076ce025780828e973b27831b3b0943a3ef17ae663103. 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/USL4R1910201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010ae7f7ae458f32e659ed1f8f2aa6e734ac3713f113648208fc704d1320df09. 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/ES71G2007914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59c2d363e6d25f6ec325a3c3fddbba015347e8c2eb773a4d31e9173d0c3c798. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T20:31:45Z), 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/QZ5FN2043637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c4c9ba0428068ed97a8b5f8239dcab0adee9605aa1e31c2206f9cda322b5c2. 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/QZW9L2373348.