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 0xbef222aa07bd36f993aa88d624ba1533380a55e47f39741d5ceacad193fb278f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/118b58b7-fd8c-4c60-b707-b919ae3b4a2c.json and https://artists.proofprofile.net/proofs/artist/118b58b7-fd8c-4c60-b707-b919ae3b4a2c.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e2aa4dc8597612466b308e431b80909689a6e09e3130e55b13b77e3f3d233b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEYOK1921221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2647a5df36b29e73cf1f4227abf61ae6971bf12d9296ee3f50efa02dbf66b7. 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/FRX282186942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4198baa9f9d8b11b9bae39d9897aebc32efd12cf6c073aa39a6c5093e047ef26. 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/FRX282186943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528fd3386bc1d38025c8e1912e4a749c676404a59aecf5945ddb2f177f0ef96b. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/FRX282186946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41645ffc483121641bb93fc5ba504c0377a31f4d7c8e8d8396cfd3baf13c3e1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX282186953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7378754f86ea929ea5f7d6404a7ea5f81d23e8fd18def2f28a4602a5880dff2c. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZGLS2379933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e53020ed797e597278b717eedc12e2938706657e007d3cc905e7bc375fca36. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZGLS2379937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29183839379440f155604920060e00a3ef8543925442398c410bdd79ae7c1c2. 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/DGA092399418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006215e3375fab16c21e7b1f5dac7f6d79dc8041c4763f14c0a427685d55262b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX202441098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddf5cdd8816295ea111d9724bbecd9cc7886aa7b50ab3f6544873b3e5a7d2aa. 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/FRX202441097.
Dos Locos / Me Acostumbre a Ti (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f80769f2f63835673cdfde0b350dc7d9aabddf78d8172d09712c1c54ade299. 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/FRX202441096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f80769f2f63835673cdfde0b350dc7d9aabddf78d8172d09712c1c54ade299. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/FRX202441096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddf5cdd8816295ea111d9724bbecd9cc7886aa7b50ab3f6544873b3e5a7d2aa. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FRX202441097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006215e3375fab16c21e7b1f5dac7f6d79dc8041c4763f14c0a427685d55262b. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FRX202441098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0157adf42e1b040c48afb6572070148dd955e9e3812310a2adbe2f8b1b43bc2. 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/FRX202441099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffab9b2b649456589b7e609d7f7d20dba04a86aa00806b364b642d4568661c19. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/DGA092486646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dca1da42f59bdd477f2145b298b0b17b90a067ef03f5fde59fcdaa79dab391. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DGA0P2422384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc920806516b307f4f6e45f6b1cc58e12576580b7ab17a308171a7050802b2d9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DGA0R2490976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd339412e041d5408dc296534355a6f0752cfb22625a303f80ae186b7d668823a. 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/DGA0R2495646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1caf57ae77951cee4f6956a432c4954c5462e8ed80f07c3ebbd7947c80798e10. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX282558379.