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 0xcd4b2e0728eecf011040add2d56a798ba83452d21b46741df42fe8a39285476b. 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/88f242e3-6e8b-4937-bc43-35de98a88d8b.json and https://artists.proofprofile.net/proofs/artist/88f242e3-6e8b-4937-bc43-35de98a88d8b.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 0xa23b5ff0440ea8f74ac72ac18465eec050f035f7bcff0f0860167facd6f2a5d3. 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/ITS782000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3644d542f4e7e89f721780b79f8bc51dc129b58fab94b8cc797bfdec1d93e770. 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/ITS782000244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b017f07d84e835ae7a4c382a2a914b215f4ac0580eb832dc3ff7c7126c7b707. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/ITS782300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2104c68ceddd99f91cf97f362aa298e7d2008e87b523fc638998300f00ecc7. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/ITS782300552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390a507c4d4d80b5d2671bb41ee6237d93226462223519623f461c1384144005. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ITS782300554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd0ea8981a8079d663e577aca06bdf846aca2fd31dfde4b5e78eb641f8f4714. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/ITS782300640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f374588f5db40c624e6e7c1fef415ae2053b963fb26b63959c48f452c1b6fa. 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/ITS782400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95d1e46cc417736d808bad6c3882840f00e9c1be49b442dfddc4f9108eecf6d. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/ITS782400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524a45fc85d48a794bc0d422c3e75b5fbf04f35778e2a0363974df397795b3e0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ITS782400317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487d11c07f9d6444e97728303171c17b437eb909f86cb7fff607e76a834434ab. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/ITS782400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428e1945aac3140905cb5f8042bfec1f7eafa1ddf671749abbdbda90458a7b23. 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/ITS782400504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd514017ac7c8afa86fba35a4bdb0cda66796a9c475bdcf62fd608f61225274a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ITS782400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceeb5b92ca3d3d15d4eb3e8945c9cadbc9174bb472847699a437701b54eaf47f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ITS782400506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c2770d72aeaf07f822d65395e16711bc3a23b174d79da831de74c8eb7b837b. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/ITS782400730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c7474579a0459204c6d270a528eaed831c6750bec88069a5f9938f9cc17952. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ITS782400921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef5aff86117ef8b2f527c7fef32d5b54a0ab9c3f495f511265c88d710db2f63. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ITS782400922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd071a926d393da21589b56da03d307aff72871d9f9b24402490f0cc395d1f406. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/ITS782401135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fd7e079f78aa43c2a7160ab652092c03b10020520ed1c6df21e87f1c12dc7c. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/ITS782401134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76340c222c815c357fdfa381b0eea1679d883fcbc7e4deae389ca5376327a49. 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/ITS782300553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95d1e46cc417736d808bad6c3882840f00e9c1be49b442dfddc4f9108eecf6d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ITS782400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd514017ac7c8afa86fba35a4bdb0cda66796a9c475bdcf62fd608f61225274a. 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/ITS782400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f683e3133a59bf306cfd767d1ddbf7724b0c33d8f82ca85b5327a2cc739db4. 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/ITS782401582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059afae99cc8ad81eb1a9d0ccd1e8605b977cf710e8bcd7aab663cfda80e7a80. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ITS782401716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7700c387bc6621b8a4bbb0459c33638d722624d99083427b4224e0231e8d776b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/ITS782401889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada1b55919aeb72a7aea31ecedbe400bca77f232d1be33f27d431ebe606916f8. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ITS782401935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782d4cae166f12958f868a5221f03dafc011c0f29435dbc526d7e8eb8a996aec. Chain 2 (Bitcoin): anchored in block 957697 (2026-07-12T11:22:18Z), 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/ITS782500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c4a41040eb705b361b86e810aa180273dfb1bd85ccd2f63773549d298109e0. 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/ITS781701722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f71af65ce2914f0a144652abe7daeb9bb8cd335cde4dbe9ae6e2686c683620. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/ITS782500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3e6906afcc7a2f63587543a6f7a989cab8ddda9d843086bfab5fde996c0d71. 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/ITS782500480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edf3eb5d0a7ab301dd69b81c4e87030b4b79fa7674caea920f5aa580209b150. 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/ITS782400318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c4a41040eb705b361b86e810aa180273dfb1bd85ccd2f63773549d298109e0. 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/ITS781701722.
Profundamente : Musica para Conciliar el Sueño Profundo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fbba25c2a149925b3285aa1fce1d37e098385d3dce2f4a16695a535a39830f. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/ITS781800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e185fe1afe02a5adc67d2345359e68393fe789f4745dad04af9ad2e4e95a57. 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/ITS781900005.