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 0x7afb63b9e48d9e5aa19ecb38ffc469becec864b30c2ce6e772c1b43fe1b3bf71. 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/bfc1c09c-0538-46f0-b97e-29eaa8c9f3ad.json and https://artists.proofprofile.net/proofs/artist/bfc1c09c-0538-46f0-b97e-29eaa8c9f3ad.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 0xd99288e9e6fead72593726cf9b9f3c204b2e70df6ca32914e19f69f11756f36e. 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/QZQMB2106831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38687fce6dab9eaef99c0c21ae7280558be2c782955fd68dd005da877a1f3fcb. 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/QZQMB2105942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa938a5a2e1cdaf281b341f342c26c86d69fb240b715bfccb349facb84945d7a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZQMB2106876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c06a22441f4e9ea2a0940ab5c85f1c0acfa26a5edea000dd8933ec4247774d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZQMB2105751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c04f86caa17440e8ac958019f206b4e41e84daf1975abcccbcb3d749d9b3084. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZQMB2107173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20c91240c95ec6bffbe8d918c4b707d6169a2f9a14ca58734e98c9c5c3deff9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZQMB2107174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1c62966e03c0d39c8f277f8d0062de7a15ea38436f7c4cb4f94766fa3f8e25. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZQMB2107175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7cef9e6c8dbad3df08295ee8132a05387cf4ddd0100283f24150cb5e88cc6a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZQMB2107176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fb4670a94ed8ea865a1d70d1ded12d8e1abd95824e2295a97d6b960434b238. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZQMB2107177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148677f57430de49fa64d7d7273221556baacb753bf452ff9aa22b425f67ac76. 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/QZQMB2107181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501035d9c032400b56192fd8222da26ff1df8b104b4d05de02e28148db5090d2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZQMB2107183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfde089366cb42ebb81130449f35f73881dceb9ef83a40a87505bf6875577867. 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/QZQMB2107184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4533c6f567029696927a16b5b2f8300ffd9f6f4b4d2050fd9bcf19f3e9255589. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QZQMB2107186.
La Perra, El Cholo, El Tiburon - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33330cf0c5ce6dc8e0d23573282360cfcdea87a5a0b798fd8e99d65c82b17b02. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QZQMB2107189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdc52ff9482e70191426231b34f4e49622213c812bc2d74d4d8e7ea76736c4a. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZQMB2107190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39282ecd3234d6b29dfaf1f45d738758dd06b38a5f776c468a45071f494ab2b2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZQMB2107191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ace2d438597e14972c6fe11c91ac84c7b687ac3fb4b4b94f0f6c771f7b00f5. 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/QZQMB2107194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a331140c54d58fadc00994b5b76b29a0504c3b4209b733a349b35275eae1d23. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZQMB2105391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec55914b50644d47e2b4d4a492c51cb6e7c47119d6e9e144b142041fe5fbcb4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZQMB2102078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c9d39b29fb82f8b4e05c7ca812326f3b87a0cee82bda81d025306f79ef8f38. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZQMB2102077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216aa9877fa624bfe62daf01ee965ac6b655ce06b8074af6bfb370dede936282. 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/QZQMB2101234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f44934b65e3df574d78e043ecc42130012042f7f0bbaf9d0043d029c68d58ef. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZQMB2101672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9194e1ad79d9d637bfbbb5415a45e3bf26c06832982db796c0c9a350eb76494f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZQMB2101673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2b845d7889b238c0fb195b687f22a1ebe61f341f11f85dbf564387fb39f2fb. 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/ESA011745674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ec86e9c5a123f53e5be1d546b0042bad38f995a85f325bfe9dd8d1235a0adf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ESA011745683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc36eafb98dc7bb96e43c450c72a2eada83b7a56976ae7fc5011ac43cdbb7f0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USDXS2012264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf4d9407060ac67174326b5c26862d95a34272277eb46c526eb83b4d6f1fbcc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDXS2012030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc3f538c03c7914cac966c02823ecc9d8297bc35c197006fac390fd51e45bd3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USDXS2012776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92dac26b17a93b9d2047d6e0fc537255ca26a5ed1b6d97f4b7a521b5e4afd8a. 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/USDXS2012058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf94615e5e9d6594e14217c0307edc85f72d20fff70ce694011addcb4e5cf7a. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USDXS2012262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66a992e3516530a0243ff04800d65e690ba87b3e297144d65483f13bb2b4ec0. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QZQMB2107010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd3006be0448eb85b920bce359020dc95ba8c32c83feeeef531cc04410012ce. 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/QZQMB2105969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1999e02db9dfeb8702be7015a52101db44273dbfeb055263374af842192d9d98. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZQMB2105721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d42ca1e6178b7ae559f4ee6c7b9ea606c5ca2b4829e497769ad571ccc9532e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZQMB2105720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38687fce6dab9eaef99c0c21ae7280558be2c782955fd68dd005da877a1f3fcb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZQMB2105942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b47fb126b2e6195215432bd971b923554b329118ad0c4591dadd4bde98836f. 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/QZQMB2105583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c66ed3fa9a1fa9c37fbfbe6114876acbece2086f075825fb8f94c1b1369f696. 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/QZQMB2105473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff41bd17db63d5ed1e5be7d94711bbb4f013ee275d1e33be9a132b83224ba326. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZQMB2102079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eafc9dab0a0ee861d01e52a32f86629096f145e45ca5a1a69bcfc515deeff41. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZQMB2104104.