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 0x3794344d89d537ab7639bf9d4fa1c7a14ee54eebba8caebced96dd3c7a0410b6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/505303fe-a22b-423c-923a-3754c8b05f3b.json and https://artists.proofprofile.net/proofs/artist/505303fe-a22b-423c-923a-3754c8b05f3b.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 0x2ab3af34d7905ce08f05a24894df3f1e3269d8914e48b6cf340ffe800ed4cbb8. 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/QZTB82397971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbeea2020425cdf3e7568b1708ff959a7c9736064dcda9b2f13e3c9669877c9. 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/QZTB82397972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70e34e02ea1a725ce5167014cb17731cb5090d4b151f3d33a91378157c7da49. 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/QZTB82397973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ace24122b4b643f88be863b04d63031df9341633eff3d015f16e36be58deeb. 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/QZTB82397974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2e49c28b6d4736854e14e44d8babcda8bf05ef1f72df14a28ebf21493dd7f8. 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/QZTB82397975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9d80f312b1bcc028dd7afaa2541d2e37cf2fad42aab71c87b9cfd9a999c99f. 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/QZTB82397976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedca40704dcf9fef8e5d19ddcbfcc7a829359ae4ebf8f65fac2017c55a3d06f5. 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/QZTB82397977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf80b9ea92437829a25e19b6f28e8bd925625d3029678f10c2866bf4cedeb89b. 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/QZTB82397978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8798dcafcfe2ff382c5332faf9e3887214eb1b14af5abfb2d78baa7ff0200bd3. 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/QZTB82397979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1235cc370cf0984a63c3813ea725a715c48f4f756214f9352ba460ad88a525. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTB82397980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ca9c838e534aea4c20c35efee621fbcf0148ac09100090263dee690655a5ad. 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/QZTB82397981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b519d924d4822c1cf6e435202e01f45b84ce875b1c64db42fa97b5d5c7caa3. 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/QZTB82365191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99e8a571ea8f530c5039d5dfc2ec436ef00b6d5d8e5d2287769dfaec6ac50c0. 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/QZTB72314225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924fb0db8eefd7f84b8c869c3873d176d8f36edfc3b4fa278e01d0c55acbeb2c. 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/QZTB82397982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7bdc4a4a03926be99152599925c2758d4ed5fe2c3664262f2a2b3763d96d88. 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/QZTB82397983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822dd2bcdf068c4e2107b7a19ab7f42e8fa5e1293e6e64d668a23dc9904a02c8. 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/QZTB82397984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03aa76b0a59cc55f20e12bb7e020c0c81ef87e61d398437e0bd4601c396a3f1. 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/USHM21224308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b519d924d4822c1cf6e435202e01f45b84ce875b1c64db42fa97b5d5c7caa3. 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/QZTB82365191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99e8a571ea8f530c5039d5dfc2ec436ef00b6d5d8e5d2287769dfaec6ac50c0. 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/QZTB72314225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd6dd7fb5332dfcf4e294edab43ac52bd7546e28dcfb46194e25fc79c7fe7b4. 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/QZHN92384534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404f82babfbe44841e13b07eb5968fac319c5273b921db12159eb9683d547398. 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/QZES52306831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3addd8da9cbeedd05830dfe680475cf5006e6a2aaf8294e7d45b6a87214ce88c. 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/QZRP52239318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91e6db85bb786a7cb0d729f8133847b612aea5c15b6672d4317e108c216d78e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZRP52239319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842231c81b55f36135fd1ef6e3500609d552cdca6369e573232d0a74da155aa9. 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/QZDA72248428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63104e802c80dec7458798ae69aa53d982fcbc1e5158d81f36eb0385fc02d6bc. 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/QZDA72248429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c94cc179b37255451776071660647a35ac251e77f5f1ffe3420e8367a96c5b. 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/QZMEQ2018649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42416680203e18e3511451836fc10120c1cae186802c1e60e0c9337c5c482d81. 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/USTCE1046703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664ddf7fbce77052e149a666c5f9ef77a1418bcf2f46046a055a9d8c8e8fa226. 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/USTCE1046789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c84b9fe798dca0dafd521e6896187a3575ad48e04d857a0fb5ed19f26d3741. 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/USTCE1046790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86269d9ddc426a54ff31b343199c3d0f77f50901c02b3f7255aeedd874d9ea7. 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/USTCE1046791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961138f5b1ab80940d32b4b59696ba2a471970caba8a71e101ab7e3f52cbaa3f. 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/USTCE1046792.