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 0x8266003175f487d3990632b12bbdfd0185eb72ac3842c8456809f6a4aff5f427. 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/6466e943-5296-4fd8-8fbd-99b6532bddbc.json and https://artists.proofprofile.net/proofs/artist/6466e943-5296-4fd8-8fbd-99b6532bddbc.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 0xc9648d37cd291dd80ec722db786ef1796e72ae48959fea333f9e4d9f10380c1b. 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/USJ3V2193912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17b611e5c3f79026441ebaedd4f51bd55f6c25941cfe778247972b6bb87763f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZLBC2427643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1770cd2fc69f821bde0e2eb36ae0a0a5398710a7bcda608061b5f6552ccdbeaf. 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/QZLBC2427644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a2e40fdca78d870136dfab4b1a51be67115521c860e862495465819c6687e9. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZLBC2427746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d4dc12615ea06f6a9018d855fba8ed4024353eb7eceebcda9f968d06ca1e77. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/QZLBC2427747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ba362122588e0e85e649cf56ad16e62a04c1d79c2dbc2b49d463bb6203b470. 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/QZLBC2428246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1652f9274f4423f6e3ffe2bf4b79bd0aab09be95e0a02470bece243d3da458. 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/QZLQR2144667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af0c43d18f66c94a4a2c7f76283cbce2cd5978e495205a76c46f853e7fc1fc8. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCAJN2571773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e94cf0ec820326de2aacd995b6a069dff0fa928a4bca4f1b55c732a241f7aa. 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/TCAJO2513060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ade401edbcb4706f9cd0a3fa910b3f6f8d0a7cc50fbc3c7d4db75851dd2d2b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZPYN2566697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d03671cd8f40234f8d52e1c1fa00b7739b51ee1522307c552a4d11bcdc9cb08. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZPYN2567087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5203f614c69ccac534e4391821c23b95a11dac7b92ac738e355272d3a253c51. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZPYN2567076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5fe37fdcaaa9f587d4482579c77e430b1e0a08fad4b283ae59b3d481ad4b94. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZPYN2567077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a87525b1bd6a336f15bb62b2591320017f1492aa73af1fc92277b171c4c148f. 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/QZPYN2567078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b66f7dd1ac07ed8cc1a07c8aaf19546ef0d011dd3afd6663b46afac2fac0aa0. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:10:17Z), 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/QZPYN2567079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f4dcc855ff0847ec1ef5a88805344164ed907d928d03677aea8e9650725c5d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:11:08Z), 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/QZPYN2567080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe380751b2b46a76d740a87da3fea45883259937f5c60380227887f0e156060. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZPYN2567083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5c8cf084b4183f895cc9f458a001ac5115ae333044d93d667df0de828d8f9f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZPYN2567084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1929b34c5288f461f1f14db7fe82957abd856a80424a48e5e494950a946dc0. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZPYN2567086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e667f4a074cc78364e83ccdf386e45bbf6dbce8f80100ba21a5f19ed0dc2bcf. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:56:03Z), 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/QZPYN2567088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7b65aab6b0245bd4ee11f3a0a6d3784df1efeefe93873d8ea6ae17c0edf55e. 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/QZVEM1864582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecab083abe58d5b775f77d9f6e3bc4a146a85cf7f4df4612910988875d82f0ee. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZVEM1864583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e707f466083d2b483a5aaedaae5423c5850011fee9f0f485f878afc794b332. 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/QZVEM1864584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf084690ee6e9e2718a309df6be4aff8af42d5114b9fc40ca4e542dcb5768e91d. 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/QZVEM1864585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834103873755d177a37c7b5cddb49cb4fd683470869ea181772bd1731a09a309. 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/QZVEM1864586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc51fe6b6f4ef07bc55a3cfe363c7f272995f9b95ffc82cde790c24fd129084. 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/QZVEM1864587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf071e2d6da23529b79b7191ec2c822c08dccc65e1058e19973fd051a4df0ff52. 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/QZVEM1864588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6744cab7c023b768bd8e2ab5f7d63b010270d24ec424a762fadd94d4a1661b. 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/QZVEM1864589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662015e77009a0deaee5a143297282dd2cf09e789142f85faeeb430dff5af00f. 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/QZVEM1864590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe01a064151f4648af4ecca80c132aedba5f883b15dc450d56415c039b99f6f. 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/QZVEM1864591.