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 0x7eaa285d165e5d47210d98234a9f4038c46a4bca76f235c0022c55cc89317139. 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/53e06ba8-f181-4b14-9077-b63dce70120a.json and https://artists.proofprofile.net/proofs/artist/53e06ba8-f181-4b14-9077-b63dce70120a.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 0x386cf24a1b548207b900b34cc5dd2a2babc94550719779ec2deb5e58fba46052. 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/TCABR1397023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256bb23acd211afbff29c376354e77f8c2ff3a58536738e09c602d3ad7f3838b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCABR1397030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd7aa7be76d5a1d338f52c2adfc88f8c4f6e4f83c09655ff36e1c2a0268c218. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCABR1397034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104f305006504d84411330720ed6a2061379483f329b99a392d852d4dd3de765. 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/TCABR1397037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61fc0d6254eebeec80497e6e0714dcfae0f0366b807868ed732e3061d43b412. 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/TCABR1397062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe89cd98d91e52ea27f04fbcc4e5d706c79ce3cb954165c60a17b6e9963896cd. 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/TCABR1397066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1a47594d5165b5a9e1be47634fc272951cda6059292f9f2b8cb0d09aae427f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCABR1397068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ae94c69d5755cf7cce8d7c826e42a01d07eca605c2a97908093fc642f95b3e. 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/TCABR1397069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86f33b938c5f77c753aea161b2f5f1f19902ea96c74e603875e4b949dd9d62c. 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/TCABR1397071.
Nuestro Juramento (feat. Alejandro Ugalde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1c7fa8e70a96a94048ddf99cfb079efb89e15477b7ae27cea544be42af6bf3. 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/TCABR1397074.
Golondrina Presumida (feat. Juan Mendoza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcdf92ee3b38891e47bde34fb4a6c1e6414530f873dd1f3e514ad87fdc0426e. 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/TCABR1397075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f2b0e123258286b0ede29acf303ddc0ae13a0be50d0eb7cc77a238be1545e5. 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/TCABR1397076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0475fc8db550b96286e40be5b3e08aa4fddf10f2c51562553eb74ade74946d83. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCACO1682884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bdc597780caf857a7d9914d888d786014441ff4cc7e97ca86b449f18a21066. 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/TCADQ1846894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3587c60d4027230af2d2b1df082ab05b8a77e48cf1f50cf066342be60bdb62ba. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADQ1846912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431b66b31206b4409be1ae0509c656181221091f31b72d93ef57a208a40f200a. 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/TCADQ1846916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a5d9af2b92e273ba530a7eb617209c17db0802252e9fe530a60494f02a1738. 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/TCADQ1846920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fe654f12f27a1aa7b8a1bbd3faea4cceca36362bc52b5af7632a4f48182b8d. 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/TCADQ1846927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2961de8176f9fe3ea10fc07896ab9c337fd7edf3cc052ec3b1dd42e9537c860. 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/TCADQ1846929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae1ae763432ad2eab8a454566af4d141040fa1d8b820ff689bb0869df5b19c7. 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/TCADQ1846934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1067cb9acb0df97cdb960a7cbe35643c465ed7d58e7626cc8b5b871e61dbd6c. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TCADQ1846938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4582cf849cd43cec3384fc3fad897dd6540ae5ac3e0e222da768c6691adae0. 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/TCADQ1846939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231b40749f37f35446062d052938f152df154309949a553f7e351e2cb4e2b9a6. 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/TCADQ1846941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf92a8df639bcc8094c2b899b5c3657bb2ec9b3bde079e3519e3932b49758bdf. 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/TCADQ1846943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d8d61c588e696d4191a00758fb20fb91dc2265a0a19a7cd150c986a54185f7. 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/TCADQ1846944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b935b3667be8966824d34d8e8d70941c1e424faef9b563e408dd15d6170800. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TCADQ1846945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b5e07a11a17879d6f0ef0f004b322e0a26742a64df2656ff7c01aa16f9506f. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-21T22:56:27Z), 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/TCAHW2467034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb209e3be5164bf252277c2d9123b5b298d11c47ba5ed587336e32e2265e4e780. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJO2587604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7326e53ad8a5934ee35b405ba998e327418902bf13ecf19f168c239f01ed8836. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJU2541219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8fc531c2d3dfc4c49bd19474b4c2db049e8431cc3be2f1517b4bbbab81c511. 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/TCABY1492562.