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 0xdb907d87f1245319b3337efd29fd34f3885aa928a33598a9cf6b29eb0035b432. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3623d9c-c844-422c-a2cf-60a579b0683e.json and https://artists.proofprofile.net/proofs/artist/d3623d9c-c844-422c-a2cf-60a579b0683e.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 0xb2ccd1fd4d449fa76efb0b921f942da20947f0a8fc8e05137acc5578ac2843c5. 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/DGA072472454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f915c517ae56564a8ee610dac4a066fe662bdc33a4dadd2890c5257f79c7b55. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DGA072472455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a9ad58935bd830c3a45c822c6cacd6ce230fffb3f9b756bddcd4347ba498f1. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DGA072472456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062127b34d7fbe9f0c469868fe289de5d76e333f624253482dacf78dba7fcf65. 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/DGA072472457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d3673495bf25086be04eeaac372895be348836bf9a9d576178e12ce4ec9d73. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DGA072472458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cdf4378cd5d4c2f919c5afef4b6ae960be6b2e4d2d59122af61d195ca6d471. 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/DGA072472459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccdc99a8cab0b77f56eea520fe6563cadb108c8efe5f8becdf3f2b334f63d10. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/DGA072472460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03d22bb6a912fc6e8d3cddcfd8b4b831ad4458ef0ffa1a18ed30d36d14b04ed. 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/QM4DW1876477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e5870f11efb1cf46e83b8cbe35e7132638285b25d2efdd7f210073afdf3127. 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/TRAHZ1900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6923a11bee9e76de01251fd5ab9e32d5a99fd22c43cb7f1c78acff53496f32db. 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/FR2X42409241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f2d615fe5baba6e8b6b3a7e776bedd42b810a3dd5f648b69b7edb0022e73f7. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/FR2X42409242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c601a41ea71551c8178485bae844386af331509e90170770e003429afa703f. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FR2X42409199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95895c02c63ab43476cc06f5a19e8678b57c5c28dbb6d26847fac97b26980aea. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:53:57Z), 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/FR2X42409200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe3d42b6a3000103ed8f59d505d0004490e40b8197e1e12b301629e25e35027. 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/FR2X42409202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2b9baf74a91d33ba0fed0954c43f592b06a0b74e9193790db97d09548dea79. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FR2X42409204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc228653ac6854a8c6c22a1a4392f2a8e4ed6b2e7757c3e5b3d1839bbdc0006f7. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:32:10Z), 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/FR59R2468110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbc4d1ce27e8b6252820774f7e0b5205828b592e5b7917b19e737425e15861a. 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/FR59R2468112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1e69a03769f5395bfc23b30b3c259a523bec0fa6d33b3873254ef8d2a00fe4. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/FR59R2468113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21b0b62de0c04621528ecfaf99ca822d30326939fd9089c4b797010b26341c8. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR59R2468115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0a9d0d928f15e1b1afbc0f4816baed2dbfba4d95bd947e672624a4a6fd962b. 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/FR59R2468117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09693f78673a0f3092fab32475b251b7d931eefffd2f22e3ae7aaf875ddfba3d. 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/FR59R2468118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d103fe0bfe388c77c4fd3648c3495a2c573d448fe61dab71745cdb5dfd8af4. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:35:56Z), 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/TRAHZ2000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801c01f0db44bf465decd119b274c12d1fef29ef18378564f3dc52e061e0d615. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:07:39Z), 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/TRAHZ2000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16eb2b574498fd2bef81abadd55a5e57a6c848ee89405c0a1a5fd679b3eb603. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TRAHZ2000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e5870f11efb1cf46e83b8cbe35e7132638285b25d2efdd7f210073afdf3127. 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/TRAHZ1900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16eb2b574498fd2bef81abadd55a5e57a6c848ee89405c0a1a5fd679b3eb603. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:03:13Z), 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/TRAHZ2000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d103fe0bfe388c77c4fd3648c3495a2c573d448fe61dab71745cdb5dfd8af4. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/TRAHZ2000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801c01f0db44bf465decd119b274c12d1fef29ef18378564f3dc52e061e0d615. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TRAHZ2000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052501f3b994800fe6217a16f236f07ce110d8709d2fbb13ba6915425ee442f0. 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/DGA092420950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a48ef348d40ca74686bc33d8fa1968d6a643455b8bba9ccda7d73334d7ae24e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TRAYZ1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c10b331e7b4564327ffc78d68641f1a1e96bcb7ed8101db5fce1b34186deb3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UST8K1686192.