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 0x2c69e4839062c30a0dc5a780e657fac658e4d7f5b33801086c7f1e8262f48a6e. 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/9a505346-5b27-4671-91a4-c9b3ca7898d0.json and https://artists.proofprofile.net/proofs/artist/9a505346-5b27-4671-91a4-c9b3ca7898d0.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 0x594c12718ba05e4c5dd552775bf3d48c50004d471adc72e0e03f6e7feef573b8. 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/GBPS84192844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e847da18b4f6898c60a9b0d6dc2afa79f1f4e105aac44f1cff012f135775555. 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/GBPS84192622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946d20a327c6d6e6596b80cebd8e0849259d1a2372d73f94ed3f69dfa0a32686. 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/GBPS84192860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6548bc323d091b0e5f9ac0ccec9ee33f2e371184ba393780beff051b7986bc3f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBPS84192853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7468f29870852afd53a9fc8903e8eb77aceecbc6126ed768b578081eff2a8c20. 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/GBPS84192726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8d62c54b2faab7bb15b430130d435ad57fe2b93377b56b44e731736671421e. 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/GBPS84192719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf521396b9c86b9c6a9bae79c5a568bcfb785d48e39db98542eafe80da331a0d4. 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/GBPS84192685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47136a888bf7e3cd9c2a9718175a76fc9227d4e9cb2f304a969e152f6c6ebee6. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GBPS84192645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa1e9d9a5482b46ef7e79997139c7104e569a8757f886dc6ef2811a6747a60a. 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/GBPS84192529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f903ddfc6840612ce61e02210086adf3e7bffb23573092275c60ee1a9f9e8c. 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/GBPS84192533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25e60e8b4cc20ae1bc2e6240c3d418d9cdd9a24aae5e0897d7ca548c2d21f32. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBPS84192668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b6ea7ce78a6e4a2117685d0cea4425c515daa78be8861732f152bdbda85b5f. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:50:46Z), 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/GBPS84192563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2377b963d95ddf9952aa77c7256979785350e522aea07ed3b61952c96a20d5bf. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBPS84192729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5b21a9e37dc5e0549736b1dd5cabaa69dc6b1f3a096fb460763a8202c2b97b. 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/GBPS84192626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060e9b990aeef35c0b291c00c0352a4260510c46bcf9fb1a8b9bcacb0dd996c9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBPS84192656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db86b9b18a599158c689db89c9f860986579ae2d1a4a1eb7b2d6b6cece2713a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBPS84192640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ea4dc0b5cc87c0903e66d11843a046c8ee3341c9c6f5c00ae4fedc3b57a4c6. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/GBPS84192689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb298be912238918f92d15b08a686071b2a9c8c8865189d866ed8cd2017ebef52. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:50:51Z), 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/GBPS84192824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0723523711e93ff1132deccc600cac74ea03ba6a4e821cba940f6f17c7c55bd. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBPS84192567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc1771664d4b3aeff5fc5a085389ebcc170e9b0eb7b1d393f639cf84492b21b. 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/GBPS84192521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158a2169aef251b144b0d4e535bf8dc59fa574c556dedc8d31824f8daee243c9. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GBPS84192585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86614a491c83d20db2db7090b26d0f8469a0f4176c8e858d0a5e80e8f2a774d. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:56:09Z), 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/GBPS84192777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a5aac44414322e4647958bd061a445710305a4d739624712920627005c7a70. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBPS84192570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41d86c8e7738d78840a614151c24fbbdbcae38c5ba219190cf6a76522817ee6. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/GBPS84192779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71843f6127911d9252a21a5d80de18ec4e39d5562c4c03d8a88541aa065eea44. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBPS84192674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51db8b7f63e034a741ebf96819aee3503bbe6c4ee48332f8457b0c8a2d881dfb. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GBPS84192580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ba9f68b3c45bd3eea84503d0f451680ac445dfc903bf383b595f4d61af0d3f. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:39:50Z), 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/GBPS84192716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914585fb70cf52cc0ad8e89bb23711f9b4255795169f52808b18967eed0a14ab. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:23:01Z), 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/GBPS84192794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf532574b3c3138d6f090f5f9afe3bbc54acfd69fbc7633a5ba696ce65cf7be69. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:35:01Z), 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/GBPS84192805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc707d928502d278202df32adeb976141030825e5ac47d6be57f342221340b5fa. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GBPS84192772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf3cce302e1d03fc7b5167d4f464006aba0a2fa63783e9a160c43ef9af6001e. 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/GBPS84192565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97e735b646e2a8a65a926534c3e2aaf706ff652a1cb934f5944834d43662092. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:03:18Z), 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/GBPS84192752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa95ffbf12fe6bfc954cf83012e7b177f35c5f54d7bbeb0447f9bf1666e5bcc9. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:44:26Z), 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/GBPS84192701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be409cf9f4b461e318dea663e407b3976f5b33bd0af63c3b0eaddf60ad3723c. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:47:56Z), 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/GBPS84192733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4e794dcfc1abc97ee077853f3979c668b3bb551318e3325789d005b1318005. 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/GBPS84192597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4759887b3a75ae75c0aad01d5eb371b40d1832f359fc2d3d6d8c7276cc358e0e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBPS84192594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fe321ad96f021b6dc9267b5cd2b63cd2a09dd36ee025fa7ed9234550aecb38. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:41:12Z), 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/GBPS84192810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ba375dc6e1dd08414f0e70b1a230be15891d8b25ea40ca4cec4aa88d427286. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:56:34Z), 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/GBPS84192525.
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