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 0xcb11baf9aeb6a93a8a52a7b6a9beeec717c291e466d354cd51d173a751b903c1. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d97cc183-885b-482e-83d6-3eb793a093d5.json and https://artists.proofprofile.net/proofs/artist/d97cc183-885b-482e-83d6-3eb793a093d5.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 0xa68392e6b5bef2a80e1fb40ddcaae4d34667d155f46b4255ef6665287a345b34. 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/ESA012292862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca51a99fedd4886ef3c39c22f64cb9b05eb91d2a21cf9613f7d5c4cc92b3193. 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/QZYXP2370807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9183c5ff888be3642b95429d1f1614347500c4f672700add055e48527b543b8d. 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/QZYXP2370811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65d76337077b3fe7570dc9009ba5ecb830c16f686fbc04f9a64e3bea548714c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZYXP2370812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6a48fad72adb3adf451881f4676b5708e8483cacdf619de34f86bbe9abb8a9. 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/QZYXP2370814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efa8abad2a94d6a8cf308accf7f2879ab824ff20a27be577cf9f91d28b02ffe. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZYXP2370817.
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 0xf925c9309a3e31c7d52d5ad162569ebb813d3582e30d7504f7110aa57a737d8b. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QZYXP2370818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686fbdd9c97b5a4d83e05a14f7b85be750987a4d1a9322841be759498052f8ca. 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/QZNW72217172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60f45d9349de46c5dd4f54a47400abce1b19a9a4759a2d69c55219c428dd96f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNW72217173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf835d3344ec3939ec766c3a6bad4bc60c4dd1537a45c0830d3a037483ec340dc. 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/QZNW72217177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23730877fcc59439a8c0bad67468c3765b4a461f2ce4342ec9d4908afd1b2f2f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNW72217178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094992e9c95d6677d4c3b4df9627a12631e7aee4ae0de489deeb35151d7aafc6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNW72217179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffe51b62f20469504739cc65e0b7547530a7e0bcd425cfbea271304fe03cfbc. 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/QZNW72217181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d4f4565b162eec275d9430ff16f7635f902d60c2c21e5c52ece9fa8a0db68a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZNW72217176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a47b5573a531b49b054940f6114fbf96d23a129ba92be72a3bf55c7431b50ff. 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/ESA012147085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25737916a469a16c834870a2a4a4c390ea276c9e6d5504a11c8da9d85b76bc93. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ESA012147090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50a64cd02fa2c918b50f5d02697e8805a8035d64e256d6c4c4ae0c5627410fc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ESA012147091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe003332c079200ddc54f0dc6cccca149fd6af4b655533883aaa6b72ebbdace6. 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/ESA012147095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc23abadfedbf6fac716ce2f8e19dd7754cfa8914f4780f2ad1f464648ec4edf. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ESA012147086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317489ed4b48351ad2976a1850812f226877eceb264d30e60210d9d45602855e. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ESA012147093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2629ebe2fa8627bc1aeeeacc8fda22aafb172b623c41f2204dd3fe8cd8ace5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZXLZ2407154.
Mix De Sones (El Toro De Once, El Son Del Tlacololero y Las Guilotas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15f24b122c070fed8e5e4726ae3b9c9139fad505b0f0f91b5ba65b5686bd181. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZXLZ2407155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0067a9799a0d18f4529a95cfa181e44ab8258db8f17d7fd70eafeca3adadb95. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZXLZ2407157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fe859bb1fe5a6b0c548cec4c69a1471214d6a21aa44aff14bab11a46fe73de. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZXLZ2407163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a16e4ff8acca59104fd084ba419888b94b2aa2f58e7da39fb625f3658d1e482. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZXLZ2407156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744bc3289600ddc11431eb16abd3ce41dbec18cdfd11581335902c1eae482b27. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZXLZ2407159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd856bee6b2419d8124fc9c33844949f13f731a0c7ed57c49231dd217eaab51. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QZXLZ2407160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcd1dd49bd743cbf2623bb1c7faefdff31f718f2dd85aec4602779be9dfbe0f. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QZXLZ2407162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d5e482c8b5e715b0dd366ff76efa434feb4475fb4526023b3d37d36a516bf7. 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/QZXLZ2402493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2eae279f504eb9f70b019cda8b332ee4067616b65bf37abaf8b4c5f8733609d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZXLZ2402494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157f8ac47130fe0adcd6da536f81c67a2caae540af0186a2a43525d4261b27ea. Chain 2 (Bitcoin): anchored in block 957244 (2026-07-09T01:44:02Z), 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/QZXLZ2402495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b17b868b6fcc3275cd85edc5e079bf476b2f339697dddda63514aee65dc10d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZXLZ2402496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ebfa96d28199a12fc4ceaa2e88666abad4a6fba6f012d08da648d85d4ca217. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZXLZ2402499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d632fa896a9b61d89ac1d1bb814558b6d42bcba1b00f7e3b1a6c98996b2cb62. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZXLZ2402498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b118a45120bab36575bd8ef83deb4b657f94df46408a14b0843f4745caa42b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZXLZ2402501.
El Toro De Once / El Son Del Tlacololero / El Son De Las Guilotas