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 0xa868ab6f70fe766ec6d6c53fee6f7ab1ee720360a2b17a4b4e22db8abd8f20a2. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/859dae23-925a-42af-8bd6-e2aefa777425.json and https://artists.proofprofile.net/proofs/artist/859dae23-925a-42af-8bd6-e2aefa777425.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Exploding In Sound: Live at Shea Stadium
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 0xf1ce31893f66d23a59668a149926e7cd17126d19edb1f75a97e2839184f9d0f0. 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/QMCE71301618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e58b60d8af22736b95da497a3a024a94545122d2fde688fdb8a9a57499e0b60. 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/QMCE71301382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6607493504a12c7926139670eb886bc566a744eb119d6ab326b277e53f19f9. 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/QMCE71301385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bfb31d3dd14b9cb0f5f4e77b37ee7d98d85b76f275e567b2be7592b1dc7752. 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/QMCE71301386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d584e5588337dd535296d0e9475b4b0884e9c9eaee8910354f7cdc941aa14ca. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMCE71301387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac96358c45bbd1602fee6e6ecb246cecbb24fead3722671cb2d570ad22580ac7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QMCE71301383.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de027317c61fbabf437240b05f87848b1dd717d3da0284f26a9a497a9fe5184. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QMCE71301384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda51a61f2b6b38240e7957a763b5bbdd50bc3064bda9601cdb7a0cf67cfad16a. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QMCE71301388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe486e39c40739c4c92065bb961230a7ba032dca0c6aeb11a8801af85fac298. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/QMCE71301389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6c0e9bd921a3a1e1bef281e27cf73cd08badc69eb244827c9b2e809f76348d. 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/QMCE71300716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59498598d67c5ad36a491d70fd59b65e0700b3778489d22a834778d88c278294. 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/QMCE71300718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd516691a3949a20d8843340df6918f197bca81c9dbd8481d112b9fd0d88748. 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/QMCE71300719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f25d103397216bc12af481751f069f148721b1e11d56777a9384c918b8af1a9. 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/QMCE71300721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8145816a119f967946746f84e7f74daab4f3300b5bdd03253e1f02d5365eb67. 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/USV351462784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17313b567c15015d02a4e5bf12a1fea8cedb4b1525daae544f60c7dce483f7ff. 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/USV351462789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2b28354b717ee99433bf36503f743701608ec9d033a58ffd304db3b9d1d061. 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/USV351462790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d54b46cb3e1dca532335df151a2cee47455a3aa409bd615b463528b9506a95. 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/USV351462793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976b5b4f843ec9111eec7924c625cc8ab8143c945e86f4d8cdb8a30641c7f9ee. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USV351462785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24b3833b1ddb0918c3e740211e8c8d7a4e53a788284c4067705e9e5c644ef2e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USV351462786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358302f566827586df66d747c8b84bb3e865aee17065586d77df459eaa82005e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USV351462787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd450a33d1697da428b3a6e3c98de256d819d2052e294b576a033b145a646040. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USV351462788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300ad426bc2517d02537528d049dcfa57752d538ef2407e75d3de9567523f4c5. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USV351462791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36073fe1deea47a71a454c04f251854bb9689ee5e5c9e030e78ad3a98545d358. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/USV351462792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1f05b7c2b4519068b78a9e19f9b5f0459e68f5ca363d42fbba9669bc86d57f. 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/QMDA61345942.