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 0x0b4a276cf91abff0b4f9c361fc8033edd09276bdb396660f5594ab4e9f6541f1. 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/0e4075e5-cedc-4d63-b8ef-eef992b52c32.json and https://artists.proofprofile.net/proofs/artist/0e4075e5-cedc-4d63-b8ef-eef992b52c32.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 0x31da384dd09da3b3f21e318aff1735634f1e7ffb1e5f12a506511fbd7c0bb6eb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE5Q51900975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3061be2fa91d27dd0ca5868288afc0f53a94ead48dd4aad8474a5fd157c448. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/SE5Q51900981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dd5d5c161e3bfa728dbd7449e84245e727e904a05b35b773eea0d8b6bcb510. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/SE5Q51901326.
Perdon Por Enamorarme - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211682c0b912cdf0210c9afcb08810afc456ca5ce2bc226d3f6460814072e1c8. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/SE5Q51902048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f11650503356de0b82a721c12c2564f15777e994f6a7f0f9557864276163d0d. 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/SE5Q51901248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5cc1db295f19d230dac84854634d84987bfefd84814c641f6c0b4c694f3668. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE5Q51901249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607399a0a501b78f3b8b602ad238f8ba1a328eaf396428d4172d09616a203729. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE5Q51902921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248d6180bb87c35d574d2c4a7f862c445e5a72930b66c2159d1dd0fea51949be. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SE5Q51903358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61b6ef83548cad8dcd140488c48a1f2a3b58bb272405093714361653bc2e034. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE5Q51902014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe4fdcbb9bbda86975ba6e94376993f13dd5172b1940e6ddf1efcf864d59d41. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/SE5Q52004144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446dd2006e4a7706a5ddabbe1e2aed5ac569ce89439e687594b54739b0f4ae69. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE5Q52101640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060e44a1ad5f853e339e2376b5a32906a19b3c4b023825cfdbf6be10ab545d14. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE5Q52103571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574a9e680e6c38aa7a0c087f0693e850a380c3294f2d1a8cc18b35d477799d09. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/SE5Q52201167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e2bfee2386228338cac0e689cadfbb54dafade62a6e7acd8fe7866dd3f84c2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE5Q52202254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de77755fed3d43d809bfd6a4047ebf18ec23fee23123fa8b7c0b592f885ea3f. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/SE5Q52202555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4de822d85ae235be2a8866a78d4b03f89bc62a4574ed8c70fa08f8201e8fe2. 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/SE5Q52301988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bc2a1dfbb6757214c38c48fb77a947ffdbfb036b0902911c5ca70e871a76bc. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/SE5Q52301543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd223584110468c01066879afb4e32040bb38f3aff6d59a301c2773f4cbc5f5cd. 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/SE5Q52302728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082b13997e6dfd096a2323811a51a5befffe6e7ab7f70ced1c1062fb53bbb1a3. 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/SE5Q52303097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1e29bb67bbe26ae3b88916f26e252e46b1196bf59441f765cd7abafc8f54ce. 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/SE5Q52304529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb329bb817a5d73d3cc29a2b275c8d4ba1472642c79aaa6a60772f40d6b3df5b6. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SE5Q51901655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca9acb3168dc8f07ec2165c6c0714e7ef7f00d6824644bf8442972f256481c4. 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/SE5Q52002395.