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 0xa110c7f13b11ad5a191dda8cab93448de25e64cff5d55c8dc5bebb21cf69568e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32e55633-2328-4b2c-bd12-80304a674867.json and https://artists.proofprofile.net/proofs/artist/32e55633-2328-4b2c-bd12-80304a674867.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 0x3452f4a76be7d8ed46360f7a082d56b6af36de540e41c00b7a83bcd9cdc526d3. 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/QMFMG1324191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5aa37fa811e31f78933336345248bddec6f5aa5c70e5190e80498c438a8af2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFMG1324192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e95a3b1f6148d95305fba9dead8782fec80520ff6b41fdcdb508b2d4f3c9af. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QMFMG1324194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a92b96aa6f9d49b54198ddce33a5e0e74107c5234af50b1729d8c5b27ef7f0. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:10:23Z), 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/QMFMG1324199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcbb957fe9dc199472322e84e84f32dd05364165f9a13bbf7bda11d89bb32d4. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:07:46Z), 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/QMFMG1324200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac63c1fd44dd33562c16577f62abb746ca0d682eda138455f671534098167dd8. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZGLM2073675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1727b9fdb9a1c581f3320ff5c4d4950e74d1cc4708f413b12b0cb6aa59bf0451. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:02:14Z), 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/QZGLM2073676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f0f2f38188b014f6b747951464523aa437c897f15fecab1cedaefc5297ee46. 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/QZGLM2073677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06bd80e12929fe429c2062ac70eaa5265c44ed3bcec1c63f1a7e415dfdd4bb1. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZGLM2073678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725a84b422f12adc5bd360049a63cb802f726044be11a49c303d10dbfd20b77c. 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/QZGLM2073679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb8aa4fb28cb03f15a9123c7b695d93b45022cc3f6df0b5fe15ee95c1b36883. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:46:00Z), 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/QZGLM2073680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e683430ad32b05879bb203ee902a5a5b68f9b32fb806f5515d5a93cf354c29. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZGLM2073682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e7121ddf115131d41936b59568ec730b666a70a8332de49785540323579c76. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:16:10Z), 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/QZGLM2073683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb578de4446b056523597d4212ba70283d7203a5e984d3c600c1021e8e498696. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZGLM2073684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f63d63fbf148958f91a93cf83628e5350023c0c9f5f241525f9fce8cbf2f93. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZGLM2073685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517690b8ea47bd95e28451ea33b12e1000b374fb2486f7d58b1626d111215dc9. 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/QZGLM2073686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f5b00634deaa7611e15333da5ffb945b7079c9dd3824fd76cfef8f6d8e146c. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZGLM2073687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9969c0655af6087ed78a9eb43adf3bebe6c46a9cce932ac854d9a3101313b7ce. 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/QZGLM2073688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1fcd842c41006199912d01243012389a130ddaddf77e12365bd562aace45b3. 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/QZGLM2073689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589e6760e8253f860f77e3c6cf25ae92153bb8c99022e6a482d6d71f3fedc051. 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/QZGLM2073690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b2632e8b2425b52a1f1d6887c35c89239c41a1b8c03875bb8473a905d87a78. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZGLM2073691.