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 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 0x9d5179c805b9a036da9fb7047856dd83554da9858bc097819a9b3c735f6e0007. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dff591eb-7503-4f8c-825b-4b3d2d6d5a87.json and https://artists.proofprofile.net/proofs/artist/dff591eb-7503-4f8c-825b-4b3d2d6d5a87.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 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 0xe0aa0297f9e6cac6ed7d075f7ba7601fe9c4143b4c6849bd8422f4aae3c879cd. 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/BR8GH1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968e060474a68d0d9bda06f62257faecbecf7551d0665740ed0845195334d18d. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/BR8GH1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985f329e0dcb7ee6b5eda39a5a8bb916d4d80f18f7bac0039da3307f8f5efc90. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/BR8GH1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ba4d49c26132283636d48cfa1679221e39c8a4bf5b49f5987d327b203da078. 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/BR8GH1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622d61ba500c472f7c7948e85bcfd4c7992b81362ea2b3aea798e99d24662c60. 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/BR8GH1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0aa0297f9e6cac6ed7d075f7ba7601fe9c4143b4c6849bd8422f4aae3c879cd. 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/BR8GH1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968e060474a68d0d9bda06f62257faecbecf7551d0665740ed0845195334d18d. 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/BR8GH1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee819032812668ecd4a3c6566caf1ffbbaec5bc94fb209b8edacba48a0b41186. 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/BR8GH1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee819032812668ecd4a3c6566caf1ffbbaec5bc94fb209b8edacba48a0b41186. 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/BR8GH1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9b4383ec1d04ae291f4780d7e54bff9a0fe261e065424e9f4742efe2187739. 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/BR8GH1400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd295e5b46b1011eabad54293ee191cedb51fb295b8616b3e127c60529b663fd. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/BR8GH1400018.
Dona Cislene no Estúdio Showlivre (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41504925ee28ea49ee4b759c58aae12a2c8fef0f09330ac12e2c61610282fa7b. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/BR8GH1800002.
90 (Undergrallize e Matheus Hartmann Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c132f0790cd0f98d62041caa217ef77b2dabb75376c7d358eb3e0be30ca819. 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/BXBDI1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b652b23771744431f2e07d6c90fea21d99a1b89c281b7e000d17c7b9f245c4. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/BXBDI1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2ad7ef7bbe3cf7696d9d6f5b461d84bc07d559df7788f4384bcff4c9a03955. 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/BXBDI1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8937a6d0b78b395d2581388618f9b48a9da21d72edab3033c6f711868389f49. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/BXBDI1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9606fd44c5aca9282df12b7f8a37402dd82bfff3deb08b36933265a00287135. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BXBDI1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2aafe1a27ea713e46ac47de314e265dd2d5c6f86132126c3f6301836e9d8096. 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/BXBDI1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7799f8dd5f7f7068e2ab81d778a50da8e094242dc01da5b2c4869223134016. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BXBDI1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957f1ca5be7f7dd716a00e49722f7fda4313db111b9e507839f855fd5302d81e. 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/BXBDI1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaea4231d3e6a8408b4157f8733fe65880d61f0bf632b3b8ec64c550c0845466. 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/BXBDI1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c590abdb798712463f08b729263faed44afc6c55fad46e968ffb3c52ae84085. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/BXBDI1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7420d2fe784822eb847854d538dc8016d913ca5440dec35506e187daa4a327a. 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/BXBDI2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23215b938e1df28f4863b372c62649c6c9154a9ddcc2d1568d58d6d84a6984da. 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/BRRGE1803053.