A bison (: bison) is a large bovine in the genus Bison (from Greek, meaning 'wild ox') within the tribe Bovini. Two extant and numerous extinct species are recognised. Of the two surviving species, t
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 0x213e3710b8027c25a4f42536d3c0f5467891b93a5a78eeb98927a8ae50be578d. Chain 2 (Bitcoin): anchored in block 953719 (2026-06-15T01:07:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b37d4c8-0a4d-4dd8-b464-a8add57506c9.json and https://artists.proofprofile.net/proofs/artist/8b37d4c8-0a4d-4dd8-b464-a8add57506c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
You Are Not the Ocean You Are the Patient
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 0x8256e898fe249043b0b82230302e3f54a3461e18fc8f784433ba1e270506826d. 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/DEZ651707081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbee47df396c579c7cc6351858ea6cfad06b06a789f884573484d679e0c40b4. 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/DEZ651707086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33028b257abebde7e21fea2f3fd968b73081f33ba778231652989ef4692087d. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEZ651707082.
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 0x5b82424171f06aabd09d727e5f48a8d3b518bfe4fff5f498e7347badddc6e15e. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DEZ651707083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc3569fbe88d907659ce356396bacb52a75f84286890d8486cf26c81e552622. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DEZ651707084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8639065d8b605a5ede542d78d8f60c1dd9f7bd95dc7ff9727b342118be0b8d5. 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/DEZ651707085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c71d5f97988b7b72cf5a999a18a2dc34470e4268e92d34e6f6727ddbf362df. 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/DEZ651707087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb645972ef0dea63f4bb74572dd9910292f9062b6fd522afb6837682f26828c3. 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/USMBR1209182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83d53d4f6a6bb3a91858ed56934d6159d923c21b76f97601c7893caa2b9879c. 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/USMBR1209183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2e1cebc2d158369753ba354c3cfa54943ac71f985ff95aa374a6abe0554bdd. 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/USMBR1209187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe819ab9b540e5c98e7355bf9567a6f9757eaecf2d178af96d8a01c066b81ba20. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/USMBR1209184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb647583b136dae7ea01217fc6dcbb45284b44bbb8f052e5d4682cf435e14627. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USMBR1209185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9752c73e5f60520c3dde43e3038dde21a8a2dc0c025214b6dd91deb1cb64860. 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/USMBR1209186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8155e910b9591cedf4dca2901c29352fc090e4304db982274faf2e34e91d4fbd. 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/USMBR1007335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314f6d765ed4dda66d9e376f9ca6043f30c3db44e1d75011803a5b5685af0501. 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/USMBR1007336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c0cc70a075cc50118971d3dc885f9726be9c7ec52ec13ffb071140bbb34f79. 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/USMBR1007337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa24f014c463f97959102605955af702a71a175997c573d671a4b8811967207b. 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/USMBR1007339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500d6663d4b5041a35b96d9b033badf81a60b8ff68aa50e7d3d99bef63037803. 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/USMBR1007338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841fe7eb439fd5bb1f5b831212fd92d599377cf35a6ba768f4b9ee0f42528afe. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USMBR1007340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8f1d199597be6546ccb7542c12740d84547bf3b400ff8f5b1a993d06675fbb. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USMBR1007341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470963796ab57395c017784fc0b4e83fae31d05f51b13ae95024df0eb964603b. 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/USMBR0806036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedabd8dd6958119abca2e3ad4d8a7498b5c1c3d82a2ab27344fef46e25d5a28b. 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/USMBR0806037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b70b9fe8061ed7d332739ef52efde94d3c68592a0d9391605abb714487be0d9. 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/USMBR0806038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83347fc1b92731a0b0c2d531ece8ac5e66dc78241005a721f98bd10fb3623010. 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/USMBR0806039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbc67692b92b19457e268534656911b2a9e3ae90f1c72cab4f13d9ad4ce64ac. 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/USMBR0806040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ca5b46ff4a3a8b34d65e01aca35ae091f2da84953331f3f082997db98704c1. 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/USMBR0806042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea72a30e57694d0442a44deed800eaad16edbf029916be8d784ba88186a531e3. 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/USMBR0806041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c232502b80b334bc2e809e7f17797d2f78e9375e2db1f273b83204d1e0087d. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USMBR0806043.