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 0x36ed454dfffe6573bd4fbcdfbfec53424ce289df3146981b43c270546d519bca. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2462368f-3ac8-4619-bdf8-f7e8aa0d91eb.json and https://artists.proofprofile.net/proofs/artist/2462368f-3ac8-4619-bdf8-f7e8aa0d91eb.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 0xd3ea0fcdba82840f010df3374e05d1b69bc6b58fdb1aac13ce0a525c051cf867. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/SE6SA2199153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52f7dbc21ce8198f12d75e20c3af76ed72570bb64776c55d86a25e0ecfd3d53. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SE6SA2199154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a94003ace1e1d8eba6fe23be61eee0f99df555280fc1719b76f51db6a92cfe9. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/SE6SA2199155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde425b82ea03c8a11c7534e9745ee0815d98cab3b1808304c0118d39564751c6. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/SE6SA2199156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28076ab38ca78f88234c350a3ac243f3feec4ea8363358b27d08bde74bc09616. 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/SE6SA2199157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafe2834d8a49cfbfe92b41a953e6db57730370605007ce1df7637a6508c95b2. 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/SE6SA2199158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dbf5f02ca54576e41c09a8140597f712bb7d7e95cc9eda42b59adbdd4713ba. 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/SE6SA2199159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5ddb5fa79dc1c71e2e88344c802a71f72ab64bdb419399a1917904b784d2ac. 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/SE6SA2199160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292ee449ad4c052e6e1c1facb34032654133c3031d6675ff6147b4a82e346439. 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/SE6SA2199161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1683e58d386b654b01935199196e77204b0e96a78b460da3661b504838e87d6e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/SE62M2260875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4a82654f9b68a4f71eaebcdc59ea0ed50d5dd515b835767b382574085d294a. 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/SE62M2260876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a582ed4d04ce9c755efdcaec12a35309c6f46e013043c4e3a93228ee578a028. 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/SE62M2260877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f647f002a57d3c7072f0af7d0fa0da11278765d9c7e5ff7b7eb006404b4cdd4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/SE62M2260878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35a24d815683acd9d204d5cdb77438be8c29b55283b75d64499234f5c24085f. 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/SE62M2260879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9af420c75715694ab384a40dc636f17ea7c01cdcae4fd0331828cceb0fe209. 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/SE62M2260880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e9d2a51461d42da36d208a5cb4698ecb5ef914dab4551f935a9e95ce9829b4. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/SE62M2260881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454873c4d6d62cf7a0e81a1bb9eafb2d7c28e0f49ee526dc3e5b274c0fd9b217. 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/SE62M2260882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba1d831fc30ec3efa693a9069f092f9726107e1b692c8617c3d1e3ddd24ba0a. 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/SE62M2260883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87df5340ab3ed8902a2ba6e501d5872fb4ef35ac8c2f40578f2fe4cf4c3a22c. 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/SE62M2260884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16617990588d485212ad95ebad1a4ee60d2e782e8427a17f6f7811555ec435a1. 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/SE62M2260885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa803c96a3ebf36f1a30ff3af9cf4355448eb03aea8828c82737bb144b54178e1. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZTAU2177628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1313892875deaacb0313e1f941678bfe795451800309d925eebdbda2bf98743a. 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/QZTAU2177631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd8c82552b1224891f80bcf52595b5f234fa8a2f0aeb240165618286fa54a5a. 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/SE6SA2256289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3779c815c855031ee45d97758eb70b9468a2b840ea741a403805296f77b30ba7. 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/SE6SA2256296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc6edcf1e520f1c8883772f9680321fe3d628c0543c57e183dca8cbff9c1527. 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/ESA011806256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc6d5006f299616c1a3faf21d0a1e8877cdf004e441a25d41b0183a1220cc24. 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/ESA011806258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd032100e1db01270a082a3e0d9b17e5b8241a9ae0aed5a973643d3ad6fdf3e07. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ESA011806262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bbc294a09d0189c796eb084b7213c15c5ae0b7d4efc37a6224d71a8b167133. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/ESA011806263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f122b76db60dc7dce8d48d7858b2498b59509632a585e822e24e1e8d2fad314. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ESA011806264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753b9b324970346feb80219d5e114f86b5a747e9cd4dc2e4fc6da5682a54852a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ESA011806265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce739f713f75cf7512871bcf8c7476bdf5aedbdd643d66306bd8abe7adc2c5c5. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ESA011806271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a82052f5e1d55a29cc91d3322a42a9d944f3022faa0632e5a2cea587fa818eb. 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/ESA011806277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef6dc883ee8679e69196d133aa768347e52343bb14bd60046d5256b6f0d6292. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/ESA011806281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b253bec2a3ce6b0bf2f97a1b6b156a7cee6ed64415c51ffd1ab15c3199f9c06. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/ESA011806283.
Ya no me acuerdo (2020 Versión remasterizada)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7268838496752f70be3d357f94c004667dd6e1c603d0a23774a02b2d7e910d9f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ESA011802702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42ba4c52fb7da826a5bf6410a9c4ed4f15d3f67e2236e4d02bf065f835522e4. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ESA012002628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bf881911dfe504ab783b3940c9c62a825e2d2a3dd38d29c57f4ee6a7cd5e7d. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/SE6HN2414556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5821cc590aa59ec7993b4d5122f73a1450c209ad5c56363a5f7c4024676675fa. 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/ESA011812679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b2ece987e8ddd7974ecb7d361c5f815437e6ee2c9d6fb57a3013d9c32fc9ba. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ESA012041722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d193d9ab352eb7eef77de785f63bae8bb01ac47518784b93c46c312610010c5. 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/ESA011918312.