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 0xaa98a73c8e4450db530abc8615a56ae4bc16b2c6cc4fca98c6192039e533ac4a. 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/dc4bc628-3b97-411a-84c2-e9f5c6a42a16.json and https://artists.proofprofile.net/proofs/artist/dc4bc628-3b97-411a-84c2-e9f5c6a42a16.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 0x4f95bd90dc95a66468ccb0e45ee6382299d7164b37744fc70ed716d0aa6671a2. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QM6P41513223.
Voces en Oración: Coros Católicos Emotivos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a716533421e17e2a021203bc4b4a142cf3e600e770e12f3c0fb323f322cc14. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWV32520642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7b15946f4bca0196be641b3c9ec5a53f8bb516df0c759fbe85a4395e22472c. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZWV32520643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277f1cf61b74da0413b14039f057b1945d424f32c19b78760369713e167da12b. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T16:28:12Z), 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/QZWV32520644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf8e6c5bbc3add4a2d52cf09bc550d995918cd5918a1663635179081641a6d0. 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/QZWV32520646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7d4051502e4ef31edef7f47c0b712405c418c4b0dcbaef51c76da0cc9dde8f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZWV32527366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836a5119bd50619be76dc5200eb10c6200ea86c5dffffa15a53fba4cf513c56a. 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/QZWV32527368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e2dda3155ab6178801d8293e4c4ea17cd1907f5c053314b704f85f6c2b9c0c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZWV32527384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de241ce7e6c20e5e9232d7abcd60147714d0905d322e6cd2ab2e5d6b8624004. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZWV32527388.
Bienaventurados Los Que Lloran, Porque Ellos Serán Consolados
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61edf98c0b255f84c8f8bcd7091154e6b78941c47aaaec8fa4a02ee7278204f5. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZWV32527998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343fa2c08ed4cbcf273d3ba94e83c5cba0af0be1ff11941b080ac25553ad2639. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZWV32528002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53374aa7bfd6cfc83df7b6db6c767d88ac02c165a70092771e004d2b3d4ec7f9. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZWV32528005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2142ec2d7aaa840c93aa88426bdab78578b51dfc113484d82e5dd7bb697410b0. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZWV32528016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54fc7487efe5ac84dcfd8611fcca1f168ee9883d31b096ac85c9e8533af6181. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZWV32528039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2613544c0ca29742f9249d461a16407040c77c48a00607afc1595ecfc0ba2e. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/QZWV32528041.
Música Cristiana De Alabanza Y Adoración, Vol. 3