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 0x56b6ddd3999d4de1385835035483db6570f8f15529e009888b773be7e1f7d56a. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d4566cd-57a8-4121-a4fe-bb6a0677371f.json and https://artists.proofprofile.net/proofs/artist/8d4566cd-57a8-4121-a4fe-bb6a0677371f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pasiones (Homenaje del Rock al Folklore Paraguayo)
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 0x400af1c67199f723f96bc0070453c6784be2aaa25459eba27b2bcdefb5dbab47. 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/ES71G1510963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84a96b16440c7d6d83dfe0e9802cd2c987517dff3091189ceb3e1d5f000f46a. 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/ES71G1510964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f98c212f46fe8753e0e8a8994f5494c9faf5bdb89e6419f3a141d4881b068a3. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ES71G1510965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf8d08b12cd6d9d83a3dedcfcc58b92e4ce7823153246c4f51ff5d9eaafc94d. 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/PYE762100324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda46565c44bb23991696d1c896e4a48335e742fc6450f710ef9365d7057f0b47. 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/PYE762100448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ddbf60cad267dd4e752bb26193a5238054adfbe9483317ec94daee68180c0c. 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/PYE762100358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8700adc605eefc6cde1883be379529fdbb3c769652ff493e7a5e0d5956441ff1. 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/ES34G1400501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a406d4f0554aae9f86199e192c8ce0c0a8dbe5fb7dd15cb517c6d777e53e4f. 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/ES34G1400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c3f1d3347d601a7e76812c4709482d4ca960b158f17cee3b6276af97cc0d91. 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/ES34G1400508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56926fd6a764e3c4257055f13aec3d93994797d9fd539952aaae41dedfa1ce77. 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/ES71G1942963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b9e906f0f0ca4890b147ce55de3d7cceb9ec4eebbf9064714b2b11329eb06b. 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/ES71G1942965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a1d982ae8b2aeb0eff186b1e2f66d629dcb658da490fd672835465a1878503. 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/ES71G1942966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1fdd6a2f00845f64d322a26209f1d83b268cb6e05973e0e7a6970edb725aac. 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/ES71G1942967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc2a1e3942b4fad7b0d244d087b0de7ea52f2775f83e65ced0c59a5fc60a21a. 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/ES71G1942970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7835954e108e05d17a51501ccfde06d2816cce45844da42abc3466af630cb2. 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/ES18B1805582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a9c8fb415892fee8f90f1cdb261cade762880d4d870fcaad7633ff9276bd24. 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/ES18B1805584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7422c4f7bcf3fe96a7d3ca41fdc345412a8ceda6563ee86a72e233f71167c51. 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/ES18B1805588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a219339e0e22d5c48d3947c7ec7f38c7f2bb8ed62ac58c109908179283aa174. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ES18B1805591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f10f13a986942ad92ba39d6910af4f2521b530404a17c35a7eb0853f9e573ad. 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/ES18B1805593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6078a975f7ef2638cd29dc0cdf6d396e97cbda886e2ce48929a3b0b53e80f4f9. 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/PYE762100079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487158dd6e87170f3ef5c91feb8891c28bd6c515bf4708f3a5c298f8dcd88c45. 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/PYE762100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04aa427883d296254d06df4ac3c8de5f12d7b3aed50c2687eaf113dc0469178a. 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/ES18B1805603.