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 0x448b72cc31b15f0dcaad6d3f729067633ccd2fdc8644cf4064f1b2bc4b15a86d. 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/0d84d8cb-a88e-4029-b04f-d3bca0027c62.json and https://artists.proofprofile.net/proofs/artist/0d84d8cb-a88e-4029-b04f-d3bca0027c62.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 0x45fd8637574ea4b97e552d65607a16651846d830540c20cab1a8ef68fa7dd7e4. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/FR3DO9700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746c891c7062d73fb4031396ecf1d7aa53394c079b3961666ee1fb603d905a41. 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/FRY689905080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf870eea671c15dfc5c8d1b525e01adb8bb8c775b5a1ee252d74219d72d983a. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FRY689905110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c216ad3c41d5b6fd5c42a47008d1934552a51ba7cfa18a41c19d4f0c761d5e. 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/FRY689905120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a3e668b1d7237f38990c0c61d6e1e21df8a035ed426f20d7342e6e99cb1489. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:21:48Z), 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/FRY689905130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ee631d34f7c6f3f9dafaee579efb6c3e1c934ef906f8ee61e5cf31f445e682. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:36:27Z), 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/FRY689905290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6106e88eaf5c405cc0cec33d37241aec925e5eba42dccbd096415a1e9d990f64. 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/FRY689905180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b06d1f64ca0f207fed0b0a19fc30b6d9f1c291fd8fae5cdf3ce44d85d4010d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR5E70300710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d870d43ecd0ee6a162891a4ca737b045fda1969615741150d410349c9a701d. 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/FR5E70201140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b2115582e8225847668ed9f09c085d8c21ca7b35ebd244d38b54aa355b328c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR5E70201170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cd55238fac209a9c40f51f02228d5b5965508b46afb2f7db028147683e163a. 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/FR5E70201230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417a301d74d9c347edf6e0736ff41bfc40cb251bbe165fd3a931035bb7b20c97. 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/FRZ110500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3216d1b3845e852762a0f846441e754bda2be0c4c567bcc11f9574687e8c5bfa. 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/FRZ110500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e25480e0fbb43df0af6657df67c3620ffa8ccc3219e15514d22c694863d7a78. 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/FRY690500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd04696552f75ab7ba06b3d0f12cd760a1773a1a6c76b67b776594b51307f8a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FRZ110500121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d39e284db0a696aed5a5fa2bc1421090a1c832a096e31ca106cc36a3a5e1056. 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/FR5E70500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ace8eb6d8a26ebcf8c03c44e169e02cb5c3994498588f525ec29b883fc7cbc. 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/FR3DO0700150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9ea9259d27ec2566d98bc50b8e267615863358633dc2ea9904d26ed3978b6a. 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/FR3DO0700170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32125034505a5cc3ace81142ec80c62c9d582d169f61c4b2be95607c05354148. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FR3DO0700190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6649bc24f22ec78dacfb0e9c1f3a5cb61bd67ee32f5d4b6e06ab17d1fa330e25. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FR3DO0700240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3049c0ac5e26e30843f750917a65f6aa5bd1a92eabd76156c261fee2a36923. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:35:54Z), 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/FR9W12118447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bbf43d3cdd273e39deaac9e38db44350345467de9335a4099960bd884f7b83. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/FR9W12014153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8333f5c776edcec52128e19ab01aea9fbde0ba809b929fe2393ab65eb68d1d. 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/FR9W12118449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6201530d8d31cbde34e53cd73ea17d41ac08d8254eac86ae7b176f3fbbee71a9. 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/FR9W12118451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f974603686eb339a4d3c0905c7398a2bbaa3e2d7e2598aca3092854b05e0bd. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:38:05Z), 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/FR9W12118452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1a47deb1e820cee9828ee25631964e2f0c6469cdd44c09846c4cc0928571fb. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR9W12118454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616d5003639061f463ae344ad616ae8d9b948998859b1d9a497c00e69aea1fe9. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/FR9W12118455.