Guitarra Clásica Española, Spanish Classic Guitar
{"copyright_id":"0x510dec425d58b0847eb88dac453d994b2589cc45388104694cac292988dce0a7","name":"Guitarra Clásica Española, Spanish Classic Guitar","registered_at":"2026-06-14T12:21:38Z","symbol":"NIM0451390","token_address":"0xca762a7465ba8be1059b5b62afc4b1ba6a3fa9f0","type":"artist","uuid":"4b216a6d-1466-4b56-9d0b-45cf2e6dfdba"}
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 0x510dec425d58b0847eb88dac453d994b2589cc45388104694cac292988dce0a7. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b216a6d-1466-4b56-9d0b-45cf2e6dfdba.json and https://artists.proofprofile.net/proofs/artist/4b216a6d-1466-4b56-9d0b-45cf2e6dfdba.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 0xba539bec382010262b72da0ea0b5b6b2532c44e223fa71b269bf638c3c855eb3. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/GBPS81513094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9084e5e5219dad2dba263c19684c657d93f83f1942154c4706cfbdfaea0013a6. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GBPS81513105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b82aa8d124c7cd417e59196e511fc1f288e53b00e539328c299de9cea002a32. 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/GBPS81500701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeca337e7eccc5197e943dbeecc227ff64f383e720f598f8b7d620557514f3c0. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/GBPS81513043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c599dad68fd18673bfc5e50697af751735e17adeb89cd342c1c65094870040. 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/GBPS81500630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0965225a5c491fc542a3104386c4fa00d82c386ed8097fa6ecc214f5c00e6e86. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBPS81513047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4703c047cc1b5b2f8a430c69deac681def6d4491082981f921e004e85c56f1a. 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/GBPS81500683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda668b3fc3a6a3f9df18af7d59315c51d6122eca76a547f52106bbb1250b7b1. 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/GBPS81513109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83effd9f35a4ffbf8b85f5b423f50336b0afdbaa9551aeafec2d312b4ede6a1. 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/GBPS81500632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c69c0adf2cd7787df35d14ed5c7d61357f77429beb480f67fde1509976a5b9b. 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/GBPS81513111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76a1cd16391a0f6eacac8952d0bdbe961c7a50175b4715cfec7c4a4d7432a60. 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/GBPS81513120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563977c2dd510679366a3764689d26e9d8e7918aeebba38a6c8a421211f57506. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/GBPS81513052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01ef5ab5b092c2dc4ae3960fc89fd719b6706ce07a6faf144e873b80ebabf13. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/GBPS81513113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757aadcc9c607541cf46f8632572fba3b9ad41434529df66610d47e1e2894907. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/GBPS81513122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fea0c958a70df8c48cf97034a998d82ad0599c1a8388a1614dd763fac54fdd. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/GBPS81513061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc323fd221da512ed349114e21207697cdfe32fa3b97d86d38f8c0ef7322b3188. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBPS81500687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ecafad0e746c965cc41fa9bfbae6d41ed042ce2a8be5f3757947e698fdce1c. 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/GBPS81500628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9489920f5d707eb48b37315d57a730b9dabca112c64f8f122a7c3dc7de4c48. 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/GBPS81500659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c337ef6c4f98a287d162b4f305eb218b8f40b71ad343e95a1cc61a1a6ddeed7. 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/GBPS81513119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b5c6a41b5dcd5f088785754667e5c31c71ef801d33f3a69c71723a2290612d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBPS81500671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb067023f694fc4d1df91c582960c55a0dbeb51791bfd14adff6913a372315578. 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/GBPS81513118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b1c3ea2d1a184d8dc4c6722ac4fab37d37505d36364ba04af993e337c118e9. 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/GBPS81513068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5091281d5739e78e9eb57c96ae7976d403f86f40ddabc6cb1a55ec0ec0610118. 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/GBPS81513044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b92d02a9c997ad4455860797177e29425f45948b124a0097e83fed5138c590. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/GBPS81500677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255f2ada1bd2bd31908ced26fb124b1306a50ce197a6d841d0707ddad5dafa94. 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/GBPS81500690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f614b87cf5468242e9871894b1342f6eef46ba72c34e3ddbdd35d315b808cd8. 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/GBPS81513084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc5891345eb51ddbd5f79f3d755cd3b3746156ed0274b0d00402c20f8d0f59e. 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/GBPS81500702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81130a698d07244a71ec60e8d9fb0e38ffd3eaf43a4c067fe479f6e733fb537. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBPS81513075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db1d1cac385eb26d14bebfe6364fd789d0b86f817414e97203c608724e6e2d2. 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/GBPS81513114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba100a3311e94ae6e58defec45d38faba934cc3db38ee26b831f1057a36a6e0. 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/GBPS81513064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd65c4c8bb9625f9ec6fc970c7f3e7cade96bfe30acb21d4cc0a2a07cd1f4996. 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/GBPS81513060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ade781510d971e6c085f9f25fe6a646994bab5d40e541dd7b785236a3d27c3a. 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/GBPS81513049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9296489d0492ca8fa1d286614116101d5c4f3eb4ba7b4bf49b8c40e5ad71d4. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBPS81513099.