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 0xd748a3ec595258356d19988c3b977dbba02a273f3e3c9068c237390065d5d8e3. 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/99686e72-81f2-438d-8498-b766e6a05803.json and https://artists.proofprofile.net/proofs/artist/99686e72-81f2-438d-8498-b766e6a05803.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 0x356b720676b2cf6a25c41d90a907c987c74eae7381c2500d9fb1cf033d2bb628. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:52:00Z), 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/GX89G2242451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3a7bc153e014c06dd8e8263c9c25312199764ef82cd68f645c96bdb34f846c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:50:33Z), 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/GBSMU0123372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c95741ede2f8f61ad363e3dc6be98e68b91ed7bc388f2432466147a36670ab7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GX89G2231199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5864be60418ebe54607f5f9145c274fbaaa249f7d3a4dd21227ecddb0dd8ade. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GX89G2231201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa657d0cc875d81bedc8cd706a85018bdecac0069eecd5204e4ecfb10b06e476f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GX89G2231203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e339753596f91d0143e4d68893b11bacdaf1a1d7f069b3d09669b5079ef6c7b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GX89G2231204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8c86cdfa4f5816829f938a248d4f9552960d25ecbfadd9b55c9f4df44fca6c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX89G2231206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531f5870cb1f1a166f017f91090df3d96cd25607bb62cbe607182eb4869da4c4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX89G2231209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9c600ba40fd6fd60a479962dcb5f5052328d74a7edbe1fa5d8caba6bf8646f. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:10:27Z), 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/GX89G2231210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e3880b945a77eb8059f766a2efd4bcece3eb0b77e3be247d1eeedc8fd6fc86. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/GX8KD2297203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181e2eebf619943be31f09accf2a88229fcb0822bb89ddfcbdc7c788e1fd141b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:57:24Z), 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/USDHM1707853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c6263793b7410602b9b91ac079e071721576460e40e3c91dfa52d0d31132a7. 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/ES5301027301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f45efc3fd2e23dfde22969331c4a6b7c711573f6cee9183b584103d3d9087b. 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/ES5301027308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3754a06ecec5a451dc0fa7a496fa28fb7940fe2cf67e90b3721dd6406b04c8c2. 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/ES5301027315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0f4cd0e57184e10f97dcb1326ebef360ec9b9c63a82ca89384dd2b6bf57dd2. 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/ES5301027316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c10fedb32f396d3e4df14f25dd7a1dff7dd26d37caa686365794a3f4b5c886d. 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/ES69S1500462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f161de6fa550426ce127c18129af9387b06046e1a08312a7f021dcf07d2baa7. 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/ES69S1500469.
La Locura Está en Mí - Streaming Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27287936da4a93fa06773b9146dfee3df120cfc8ed79836ffa049c55710c8bff. 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/ES69S1500476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5a3da85f2abde141f31cadf64940878374fe769c517adc399e2786c5a86ee8. 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/ES69S1500477.