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 0xef1305f70e2c8074ea93b50e58aab14c89feabd571dcc1b482725f01d0adf366. 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/3aae4f45-f923-4f98-8865-d0b9c74eebd2.json and https://artists.proofprofile.net/proofs/artist/3aae4f45-f923-4f98-8865-d0b9c74eebd2.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 0x2df351558c6498143d10b0a16e1ed945f29835256d71ca425cff5b75f4e40fb1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:13:24Z), 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/ARG991013901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85829eafa48d830214932aeb82aa905793de7d47d73cb248e1bc43e67e882ef. 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/ARG991014171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cddcea0469d1ad49e14fb600f735e00b6b2cea7d127e30ba8c7e596d6112bc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ARG991003665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa205456c002d02854f9c89952f275693eb98bbc9ff30aa129d682fe3652ec59e. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:19:21Z), 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/ARG990901228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dcfc6c1f2d5a6521987a3b3ceb3f71c552d012faf9f5e1109c0680d5960efb. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ARG990901233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f7edfb702e2a7edccd54e9875201d0dfcf679d7b50fd80c226ec3084c2cf2a. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/ARG991013899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24a8a1fdfb113c17557570b2d2422b521227d83bb89ff910e8400655ecbf444. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:02:16Z), 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/ARG991013900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87aaa7dba3ade07e60413884f939c0f2ef5a78809a6ed59e0e81235f355a4bf. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/ARG991013902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb52804b3af588ad867830987602207227d254ff376758dd6c73576547ad181. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ARG991013904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e460ee8c9e54ab7afd60c7de0b71ad0001a22006e70d351d518a3e29ab489f7. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:36:43Z), 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/ARG991013907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d7c771627509c55cfc5aa62e592c4ff1c4497426e3e591141b2dd410cd8933. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ARG991013908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973312018bf9cf9243a20524a6c34ffac2018ce94501dca804e765e647a39707. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ARG991013909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e898e09c08adf507abcb184086751026a3cf22d586ce4137f0ade6f1602d429. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ARG991014077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea066f7d908061a0296eb35949c5e98d71c5f45b85048e95486fd3758a53fb0. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ARG991014078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb875f4c4add3b94a9571bf9e42df685a11bc740d63aa106c4da075e4b15e726. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ARG991014080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1ae2de3de2eb93878acff11cf0f50a2e5c3d8f1a6793a11f3fa11601d213fd. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ARG991014086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841d9156edac891589e26f864de99a8230eec816fea89b7c3662bec539e4a45e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:05:49Z), 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/ARG991014133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9bf53e571f6df53591d95560f8ac03907957b5b12c16f2ab6f7ccca665d823. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/ARG991014134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3689b17f4b702a006e15886d337543262fc08272cb7f8d67d31daeb78dee4ff1. 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/ARG991014135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccca2a9e725b7e546798b17ee2710945a2c2f91fc5cf57647cf368487b98692. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ARG991014140.
Enganchados: El Vacio de Mi Pieza - Brindemos por la Paz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e980a04830438d742530da13997865dec91fbfb215c3a7a7d7d6519825e861b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ARG991014170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf023227f6e4d7e95bbb5a4ebda1b3e76b4b9170e0c9a46a266f8ecb0edffc993. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ARG991014173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a926299783a34c1bacf8ac96cdcad2f5eb5b3647df8759b93cb99292b91762. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ARG991014175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce08e7ed04d805ade219019975592537176a5a4f1c33778eeddc8bf4c84f239a. 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/ARG991014176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e9fa46e98b8af9cc15c25ad62b3939a6372e01ab33cba9fe4d25979ee90229. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ARG991014178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf673b81de50996ac64e8ef114fd64cb20a2152433be499c93057bba26b47675b. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/ARG991014179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b73ed653489cd38c39550b800e4f8ad3b0579e245daf4a1f75c60e6fc8aabcf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ARG991014182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b9b7e9ff52f95895ceada050909d48911a5f0097b159a8833506eab1950f61. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:52:05Z), 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/ARG991014183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664c03db0f02fd77fed05f7da5a461ca217d18c9f1687040f73466a257600e17. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/ARG991014184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcdb3d70eb77b56f335a93ce8a6afb9247bf990accf89f34822e0c580cb75de. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:37:32Z), 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/ARG991014185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde909171ed910f8d16cc9da2015acdb26ba8777f56c180d2bcec40eba20fec1c. 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/ARG991014186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc0195d5ede554e17c523452db6b723dae0ed785a7ca5cccaab8a199d404e0c. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ARG991014188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624d8abf1416693901253dbc4f26764523d86c49cd75087c0f82945e6646097f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ARG991014189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea70d5452ed1688eb69db3ce26d1bb224eb969b678a398a46ac3960369b6053. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ARG991014191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742b4ff4ecae032a09a2a98a3cf7b633c27e9d02f57e98abb20c2d37fbcf9e36. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ARG991031152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfe9ceaf019d09bd4fbc89a0a67175ac97d8ced1a6ac5d0672327192d2c8b14. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USANG2001112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb1df0b352bbe33a0fff2df920aa62ed5e8e41a641ef9fca7efa9d3baee3a92. 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/ARG991039439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dd907dd598745513fe98fed90f18828e981038a531265c618c8899ec899bad. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:21:02Z), 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/ARG991046627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ebf41e699ec34d59542832a736fa4108ab1793d1d062a32b16c29dabdebbf0. 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/ARG991046629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8953f1a0fba43fe9df3caabf721f4245d851b24e1d638de09d2a29f1222c7669. 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/ARG990900755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6a5f8fc4b53b73d03ed3f67511d2f755903e91d4834a6eecbc5ece41fbcfef. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ARG990900743.
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