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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd60466a1227d5d881d876b0f8fd6da4aeb20e994a7bf00b39743cc55c1c4d2c. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8cdde6d2-8566-47f9-b72f-ab13cbea4fa3.json and https://artists.proofprofile.net/proofs/artist/8cdde6d2-8566-47f9-b72f-ab13cbea4fa3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tango En Vivo (Quíntuple): Los Instrumentales, Vol. 1
Éxtasis Tanguero: Memorias En Tangos Y Canciones
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb945bb254d24cb02bb3401152b56218f243400ba2b6a93b5a132291c490dd9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARA231300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98592bfe72e9b68dc6dee3597274b29b84d3720fb225d65082c48ca57c8bcaaa. 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/ARA231300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9be72323e2e75c819a1bc8fa6855e505b53b01fbe8f834304cd3d60e6598f2. 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/ARF050600217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7f67e44f622a9ed37971ba3396602d30d5d2cf734fd17b5cd176d1875c4bfb. 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/ARF050600219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e37f6767dcca0d7c119bf3ced9e64c7b9b9cb82cd6e2aeb62ceb014e66f6470. 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/ARF050600221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e1938f2654cf588eff4841aab86b0186907f802882d5c592cb77269a7d77c9. 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/ARF050600222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a04b4c25458439a480b1da8450b414145a075fc36e01624b9bc61a477f0ff73. 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/ARF050000303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087ccde4ce8e8f3fece933cba50106b8cfcaa3ea1891e88829fe68aaf356c3ee. 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/ARF050000306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3509f174c15651d0906f00c9a067257cecf0b3f11bea9bb41c1ffba71ddaccff. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARF050000307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22977d924abbff0749e737eeda5e891bd7705bc73c7daf28e77d644dce602d3. 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/ARF050000309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc5d5cda001064b41ebc04fbf99037131a91c893ca7f1b79427166f0fb623a9. 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/ARF050400776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c8f0108058baebdfbf5c25e6eb382edcbb53ca0710d9002bbf26d4563ab045. 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/ARF050500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1bae29a05c8d64dd87a9c0a3d50c8c154b6214264d6706430c1fd61f40561f. 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/ARF050400809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6671963becb97967e0d8d713c5a10bd40b75c8401b58396b600e6d245cfd79e. 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/ARF050400746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3509f174c15651d0906f00c9a067257cecf0b3f11bea9bb41c1ffba71ddaccff. 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/ARF050000307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7904de06cf950b120733717ae1a1684154362105ffc60adf20fb316d2e1d1966. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ARF050500340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4f239a1b20aa18717dfe0d2a7523c812256349f8ff3bf6a1fb6934d39e576e. 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/ARF050500342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3afd9cadac42c3182456abc602ec9a8ee8a28edd1cf3e20f6697991300ba03e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ARF050500344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b6996e9d998fb0c1ab6883be2fc024559596ba6694c7965d57534ed2404b00. 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/ARF050500345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac6a3c0815ec878a76ce1870c57e08ac32c07cce3cdaa7c7b99f89ab4970104. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARF050500347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c858ba17aa47769efa01aa636e23b8e74e77067ad6ccab298c24868e2eb501. 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/ARF050500348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a33f9b5c201f863f41d697599136d28ba9ab8e8d4ecf2538ecff656739ea66b. 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/ARF050500349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d269c532dd018a334e91bf5df6eaed43b80e46b004ac4d5bfdb89eeeef9bbf3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ARF050500351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbeaf04cbb219d6075a931002060bd96ba6a7ac6e7261c6c3d0b6fdcd44686b. 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/ARF800200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1333b2a9d91790072d053fc2184928c1c356ff0e3865952a4f096a2235590966. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ARF050700025.
Un Tango para Erling (Tango & Jazz - Buenos Aires 1991)
Tango En Vivo (Quíntuple): Los Instrumentales, Vol. 2