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 0x9f6de2320d981ffe163dd307918d49c1ef5a4ad96e9f110f464c54e052f494cc. Chain 2 (Bitcoin): anchored in block 954058 (2026-06-17T06:34:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/452bf32d-15cb-46ee-8a70-cda1c6edef64.json and https://artists.proofprofile.net/proofs/artist/452bf32d-15cb-46ee-8a70-cda1c6edef64.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 0x285ab78424f1f73d170af88d72e9a73711c69274510def61956684a21bcb2b3e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GX3Q92563828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a6e8e0289b03e37780b79457e7d188eae165ae9716903b62336b84f1ac850f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GX3Q92565521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cab18330d2cc9965dbfd51c7a6e49fff2fca799c3cc52de2663ab2eafb82c03. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GX3Q92563836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c876f45a59b9392a1c2c0af981159a38ac8468d5c2099ba7ba8bc0b00655699. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/GX3Q92563830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa8227c833c776d2ea036782aba1a0c2c559e5671b9b8aaeb9e21eeadeabf40. 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/GBLFP2551356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238d0bc1556b7992e5320523a009726c653ec5540989327b42c74e8ff302865a. 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/GBLFP2550335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16104ee3428f79f031f0ca41f530fdce04a0ce2411b54e91b53122b69fe4418e. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), 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/GBLFP2551357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6875e0b9816281b1b602f801878dd37c1551f27aebfa8b2b4a8529ab382be8. Chain 2 (Bitcoin): anchored in block 956777 (2026-07-05T11:01:08Z), 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/GBLFP2551353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43237459b2940f4040c3784e7754c5609e0d0ff0710e4a591e93025222100995. 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/GBLFP2551354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7098fa2f654b20d90c2d4865b723b5771db8346e9456750b6eb5539a6fac2330. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/GBLFP2554224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516eb4e10fb8166c99264f1f2307af33e74b01df0fc1630874e38f00fcb84b3e. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GBLFP2554447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f63bc72d3a87796f2de3bbbc3e96b4de497bbee7e8fa774d005cb42265981b6. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/GBLFP2554528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b5f2accaa545278f0dc1ab9e04b8000afc167e4f3c66d4d100e2e9127d8a98. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/GBLFP2554047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2958bd9407f3114f21175dad61a72f2efb870d7586c152f9bc1e965c60d826ee. 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/GBLFP2558879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50eee9abed7857f1c99e7a3e21909c99da7236e029fd5493d9184b4b0ced329d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBMA22507272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabbefefd4372d20106cbae13a83665e896c522bb9e5a90ef187fc9d08478569. 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/GBMA22509219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70661d2d7ae83f121f0f16f16b18905a7e869b857b74c513f6ba81e8041eb143. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/GBMA22511543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b8043f0ca461e4055c555b6cf393c72baa5e67116766b8d8d94305a2e880dd. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/GBMA22584743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7156473f080b682e165f24139316b9a21a2f76b265ca84b74a11fff0c7ac858. 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/GBMA22578360.
Alta Frecuencia Viaje al Centro del Beat