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 0x1d525545d3bda56f0104b250c819da1356f8d4f464b4b89bbcc966cbd59e67fe. 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/2824cede-d481-41aa-a0f5-c60aa58725be.json and https://artists.proofprofile.net/proofs/artist/2824cede-d481-41aa-a0f5-c60aa58725be.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 0xcaec2714882b65dd0fedaabeaa0ba963e2d4fa851443cbdd3aec81475e7cc749. 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/QZTAT2443127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298dcca47028009f145855dfe6a00b604ffae7ccdbd9cad3fe30360ff53b58b1. 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/QZNWR2474206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae6c7f37e5b63da4fc9d601bf3f14b1600c38b03ca069d264827c8a2f5a5351. 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/QZNWR2458249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2a2b08868717ec0784e823399a334f97cb8904d37f2092f1792dde56f758de. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZK6L2416538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ec5d6b4eeb0cd54d9d89ea1db1ed2330b81f8e13146ddcc38eb75c00f62d74. 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/QZWFL2314539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d902ae288cfdd0642d1654fc65c579d30a45c31e25babb4ed47d1aac306fe7. 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/QZWFG2387782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720e4f4dcf50fa5b4363b61c3adbed97f599959d1c607c9c16e9d0dc198c879e. 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/QZWFG2357958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab59df68a5f41ab9eb98c4f2324135809ec8d7acc4c6eaa0b09d21e6924696bb. 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/QZTBF2373115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab55316f6af1ad3a8c626afd26d82ec8892d8bd5d821bcec23b8decd3bf693f. 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/QZTAZ2310234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4988763e93b486841b58a803d62770d4632cc5a966df1de01a933fed0970c38. 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/QZNWV2377311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0640648295a95fce15a50a0036ead2f87783e1add836a6f080e3cc7f749c2092. 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/QZNWR2385750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b070eaab886f633ee65f2fdb1ac128c5e7b547042eb79c0dc9bcd893a9b62a. 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/QZMEQ2324638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293c4cbf87dbaf5a96d5226a977c5ba3decfafb76866f6b7bfa05de645566ca0. 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/QZTAW2288183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66f680ff41e2818cbe67b5f4814574c8b0b5ec0e6533bc0b90039ea4a68515c. 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/QZK6F2250099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffee533cf055dc9a59615e4ef0a7c9a94a174ca6a96db920ae57c423b25d1c50. 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/QZK6G2290445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6628aa24d8ec5b1c1f089c92844c087bf640e6ccab95878fce934efe54031d9. 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/QZK6F2245148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db71a7c577062374258cbdfe877f7d8b621df9c1fd4acf7606f501bf1869697. 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/QZK6G2290793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9277563356c1f8f4308b2a989d1e3a7e588d39c430a10a7c78026a945682ddb5. 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/QZHNA2234531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330cfc872614123f1377a9122da412ae36b5f674ab06ea6969002a7ab5995a10. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QZHNA2234529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc397b0e005796fde81671214dbf084338923d98aed770c987bedf9cd7278ccb2. 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/QZHNA2237344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfba317a6c105c2aa42bc9fd4aab413e9479a9da3dd671ab9176ee151c5daec. 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/QZHNA2231541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f11b91cd5e083d432be388511678998b396ed6ef30b5bf1b95011f7e680974. 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/QZMEQ2135008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa392bc3de3466bbf339bb22104f3d5e97afc3bc429a42e65fc2252e68c38f8. 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/QZK6N2138258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4125a59d33d90735038eb3069a8e46b31e8cc9dc49d31f49b3b37e54d09afea. 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/QZK6N2126007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c132818a32d635caf63e2d5b19aede9ac48ce7cbebcf9a03ab7c3e989892bb4. 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/QZES82157980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4495f2f81b8980fd827482eee785120318d80d46c79fbf0e346259f709ea38. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZES82165583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff11ff2208dce586de7be8116d857e7d2d5ec74bb3be0e8fd911def38e6c2ad. 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/QZES82165566.
Tu No Pone (Varios Artistas (Magico Prod)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17baf87163d01e18550a028aaba3ca3b078634d6b5170af9462b621afd641bb9. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/QZDA42165522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5502e9a3fab04c9195285e1304097775c60eee8a80a7a68ed56145a4b1adfd50. 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/QZFZ62197798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24af91f30f0bb79f0dea3ae73f42cb14aaffa8bb81b7dc5fa84d1a1ce8a47c20. 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/QZFZ42168408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd59a18b161ef8c3e68ab691569db7d92f1d7b3a71fd1d6b71848352cb1b6c1. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T14:10:55Z), 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/QZFZ32112033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b7e2a3621ed306b02b20e4798e35796e8129e6afd466572ad747b167ebf123. 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/QZFZ32121172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57886fcc856ae935990fa7eabe63542974a3b548f7531ef77748dfd4adf88a3. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QZFZ22188295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1a1a9ff75837e4818e65f439e0834982de0afd2363d60fcaed9be459b5e348. 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/QZFZ22171952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdb3678cb187edde72fc6655abc3316f20f376e406dfc839ca049dcbe71b425. 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/QZFZ22164128.