Ten Foot Pole (formerly Scared Straight) is an American punk rock band. History thumb|upright|Dennis Jagard performing a solo acoustic concert at Club W71 in Weikersheim, 2025 Ten Foot Pole was found
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 0xa7b77e679cde1ba2ae08b2fd0c4c71d75636f432380fe166a50d15bbd04b834e. 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/c54e3a9a-6b32-41a4-9034-03a28547b2ba.json and https://artists.proofprofile.net/proofs/artist/c54e3a9a-6b32-41a4-9034-03a28547b2ba.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 0x440cccc812fb34f25a95adf7b9469842c281270bcf413248cc738f19fc0745be. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/USEP40318103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c463bbfcade9ba80b128e807f38b22d67d6c553f15dab07cd280ee53b1561e. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USEP40318104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8955a7d93cfb469959ed4a72aba6ca4bdce9ea4b841b75fd886f40d90a1cb723. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USEP40318112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781656b2257477f8d7a6f1139a5411d59b6e69e644538393583a26ef7b74adf0. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USEP40318111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eae82de705db9143cb1b0c767e8976ac58507e10e882461d8218ba147f2a9f8. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/SEVQI9505701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38ae2562dc692eb775f865a1e6507838fe63b47df931bdc2dc443e278448b74. 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/SEVQI9505703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c420ba0d9f869ea64ff93ee241d0fc8407e077a3df8d1583f8e94773993c581. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/SEVQI9505704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f8d79069ccd9da9ad29bd4d332fcf93455b171dca80bd6e1639f46a9f0d1a3. 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/SEVQI9505705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ae7755b53916c8e2fa8ca1e7b2ad2dbcb99dead25512618f3beafe7a70a490. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USEP40318201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fecb9569e97effd331ebebddcb6b32225420ecbd1e2f306817e889f9185353. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:04:03Z), 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/USEP40318202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bf85e05ab87e66618b900559eb5841e02414e8eb430d9df4b3af5343a60e89. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USEP40318210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64c8247f87157293841c662a28c83fd496a234ac62f12bec5b5be07c07aa422. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USEP40318203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210f4af2f2ab66dc6b1db6e5e16e7b535c84dd3e845e8e03429a65f93501503c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USEP40318211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc38b409b4beb5e35c74a49f0459c047dfda61493cad09acb199e0a214d194a8. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:24:39Z), 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/USEP40318204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2156b2f9b7d4c9f6e5e41ab24caa4361f12430de5db29653c6740e3b53041a02. 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/USEP40318205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c41ec09cda90795d1b142f86397f53a7aace5b839d07c0e728f0da26249da8a. 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/USEP40318206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4563fff4e7f1364bba6ccf0884e90224724ab89be07958a29495f8ade280b424. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:51:18Z), 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/USEP40318213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db0da48a85593549831a574b0a835b342ad5d56089cd4cbef77c4dc60a8764c. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:04:07Z), 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/USEP40318207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aabb7b7b66ddcbc052144ba86a48b3f12406802a8cae8e74d94b425a2854d9e. 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/USEP40318302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1692d0b118ba297263196de5b451c1b3428b9a4ac8c789256a591eee95e7246. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/USEP40318303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ed06a9a8d85c6fde1f56e8842266efda6084052d6373ec2c07e5810b6daf36. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:05:44Z), 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/USEP40318305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78095df88fad114af3ab97616d9ba1446df9cf06fd029c00ffdd035067e02151. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USEP40318306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f713e94b604367cf8618275ebf0f9b0d94280ed561c43c5fd30c31b648a3b4. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:19Z), 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/USEP40318308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e8a73922835dcd920a39c123477da4f8396046c50b775ab324ab7ed611b34b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USEP40318310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6340248579fa85d4f8418ee199b4c129b9a12fda40b8706f150584d3e7f74bc. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USEP40318311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38239e75773691fdda321ae51f18ab2a5a5526bcdfadca51277c02aa32a5c3ad. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USVIC0218301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2550d5b077d3406f07d09e5240a743a2adbea52f0345f125cce5dedce4af93ae. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USVIC0218302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3f69cfd0dbfa4ee5a6c5271c7cdea539dd807d27425ee1b8d900cf7f57ee6c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMEU31907056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89a5093ed9c47739adff645223ca7c920e037a962badf3984d79522d884c176. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QMEU31907065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d726b2a0e2fdb5b1d893a980b6d359bab11bad99218ec2ab8b1be1b8d513ab4. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QMEU31907066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75173a922425a3292443a36c3e717e4ab99be08e2a68228a941ccb9eb79b3b4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CAIRL2002001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd895e47dd1b455594a2aab9ea1fbed4933a25ddaa41e0057b53ca4b3d5d6c8c6. 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/CAIRL2204302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd895e47dd1b455594a2aab9ea1fbed4933a25ddaa41e0057b53ca4b3d5d6c8c6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CAIRL2204302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c773ade95cdf06ec4d372fdba1426ef398b144dc0a2f1751b313ec7fb674ea. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CAIRL2204304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4542f0a96dcb1d65929fc241b9ac481470ecff4da7f39fa7f0317739be24099d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CAIRL2204306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cbe652610aa26c5f3f9a1d01307b0fe3c97747dd3b29e51719f26d93644e3d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CAIRL2508513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22979e7ee440d26dcc607ffbfd7bf36387d1b12cee23a23099a94ab23326d0db. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CAIRL2508502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10d44cf98392cfc8605c96964e32563be2832aeb6463a5a2aeddd0847c17ca7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CAIRL2508506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cbe652610aa26c5f3f9a1d01307b0fe3c97747dd3b29e51719f26d93644e3d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:09Z), 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/CAIRL2508513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13ea306ba9cd1ea618c2e27523ca99c3829439e5ed501384954ab09c45503a6. 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/USEP40318301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b093c5ce384217cefb77b525829203f0ae89f9bd7026ce5bdc60256a6e799d. 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/USEP40318212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559aa978b0151c3c4bc2cdd4171e009ed44dc1365c539f07e38001bb9b718fc5. 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/USA560526691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dae6a68e75799846869ab870956927779f94ea05f0e6a6f57665728e8303ca4. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/US5260004416.
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