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 0x673333866c410ec68ecdc058e750b71300f143c28c383cb7276ed7d7a715dfc9. 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/b4a6ebcb-20fb-49fb-948d-d9e101e915e8.json and https://artists.proofprofile.net/proofs/artist/b4a6ebcb-20fb-49fb-948d-d9e101e915e8.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 0x8830682a7e23ce9af199743de823b16cafc7bf1fb541b8c8853200157b7e2b84. 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/FR0U91401947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fc48a78d21aa3077e8f63a84af5c82ffcda90f3f749fc148c05117c6112ca8. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:49:31Z), 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/FR0U91401950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6106351fddc059f717aa6103f5cae7382c75ebc09de68905b221a282411b13. 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/FR0U91501959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93254866b05fc542fbd1d7c62c1819b02eea18b40819847368774b09e286f483. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR0U91501960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad23d4cb2e1e18e1ab3a5d8c254e7288456f4f35236fe452dc9c76f1e28f34a0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR0U91501961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd996ec68b6761dfa99c290ac2d01717e6e656099bab30b581f56f27dc562b6. 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/FR0U91501962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c888cda33015ccd80beedfb8086482e02c0f0c1f4cdf4087eaa6dcc87c409e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR0U91501963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d7080c3c175585f452f4154de8abc6e86ee1ad13872287f2de804a79ac1389. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR0U91501965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4e6db5d67be54c7f89b6db17f642bfd526bf499c75370de41a012aba6bcee9. 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/FR0U91501968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6759ad9355ee4d5083ae53501c18b40fc227c3fa6c7ea1aee31bdf5e3881789. 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/FR0U91501969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9a1a0a399ac9bc483a0a367931bd858e287f2910d6213c4fdeb784d24abec4. 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/FR0U91501971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe51e2242bc0a87c6f32377c2930007f77af433430af137422b36f11e755d11. 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/FR0U91501972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef08d0b8027ea7c0c3da84d95341f5c4b2d8697fdc99d1aa273fa52ff207b72. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:33:30Z), 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/FR59R1746984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0539a34c2b9669a121e7dd088f82cc860c211810d3cf13a349efcd95549e6843. 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/FR59R1746985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7462d3f02a6d9018839d145cfc845523ed8cc807de64ffa80770b71bc2d8a5. 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/FR59R1746986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd183675873891526bf5e7b03b5d4861f5cc41916d25f19170587ef0c63c864c3. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/FR59R1746988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3493e4c2803dc83edd0e8742b11603caa3a1b4680f6ef0d3bacea67bd49c9865. 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/FRUM71900859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9dd6ed1d7675d01dab05acfdd7eda8f49c731f6cda8864ec71402df70a4c44. 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/FR9W11918314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d3b9944aa74645a48d2e4dfe59218c91a460a16d244dd2192d66cb77c57d67. 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/FR9W11918321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6835603805b3f1b492bbbdbae210096ce0c5616c56532cd0af768b70e027f2. 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/FR9W11918323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9dd6ed1d7675d01dab05acfdd7eda8f49c731f6cda8864ec71402df70a4c44. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W11918314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc15f794b46466c15bd563a6d2e714e9aca417ba3b0bdf11353307b49c8af964. 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/FR9W11918318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a80dc916b4eab91156161c5bb7422decb3095ca24489661377dc68531434895. 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/FR9W11918319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3493e4c2803dc83edd0e8742b11603caa3a1b4680f6ef0d3bacea67bd49c9865. 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/FRUM71900859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3761d4ddf6e2c536c1f1367a1a82d4548ff02b24d9eab586dd51464f40d1e4c2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W11918317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3f84ab7ab4cbe2c3b73c917568e8c526e077d34a1e133f34e45154e0e3c7d7. 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/FR9W11918316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d63a9a2ba7826214aac1cd403d91992969ef7b2bc5315742e827b09efe6b11e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W11918326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810545bd16993583fa6d9ee70e39218d9dc4aab0de80685a9bce3b9ce3761881. 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/FR9W11918313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8240f5d6aa50d50660cf3f0d62f9a5242ec3fc0a2012d3c14b4bbbd92c7c225b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W11918325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e5535a0d4c4429df7652e5e1110e549f69e7d9ef8d59580107bffd175c7e08. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR9W11918320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82f986efe481879da5f9dd6d64dec46143833205722c312ef31af99096888fa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W11919466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7002d7fe02b9d0021c2e24f0c3063be5edd25f5968ecda14c04c15342fd74f3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W11916247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cee8bbf277681eebab7c83412c3d733dd77fa9ef44be08f94e149f457a75804. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W11918324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f903e35c7367b9f2eb96eae939f6ca719d945898608e44fb8eb02ed3b14d361. 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/FRIDO1911316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3493e4c2803dc83edd0e8742b11603caa3a1b4680f6ef0d3bacea67bd49c9865. 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/FRUM71900859.