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 0xc5513a71ba261d3bbd3ed3a2c970c67f1bcdde7f2d10ad66ae86d08d81f110f1. 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/1bee338a-fb63-4692-905d-737158a72e7c.json and https://artists.proofprofile.net/proofs/artist/1bee338a-fb63-4692-905d-737158a72e7c.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 0x09cc147fef3e76dd2686a463121f26c32d84af22f83aafb46b6d95aac6c768fa. 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/QZF452029850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2797c70ea66b1297cc9dd494a2bed5bebd21a248882e77efd20225792522a01. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZF452029876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a7013f11cd433f6377006313ecd4ab5e6e5c9dae4cf1db9a8c62c3fe4aff58. 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/QZF452029877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95106f87b05dbded89a5328661a13ed73c4c5db359826256b09f3afe02980093. 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/KRA341503856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b36c8fda0f7b826e896c8da081400fbd639ef364b1f72d06d998649f0ff5e03. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/KRA341506617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c7a4410997eab089725c2374ce8d7864d57e95fe0d5d366df099907d23271a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:51:16Z), 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/KRA341530024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0760c14ea3296bc5e413c23c9a4f224f17d20ebc1e4fecdcfb8e88aa95344daa. 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/KRA341534731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91bd940488190d40416b4c47dbbc527609abd5f85949d186cd3e9fca0cb5918. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/KRA341534733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51714cc4c8e46ab6fca09136e1c78e1f7eae953e2e0d445f4b9998317f975e44. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/KRA341560541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe627494be0b7452147d3eb48be36ea5deed9d67725e17efba9468fc783ee7c33. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/KRA341560542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cbbe1f242883dbf3b8f194e7d6904bc6be3ca1226af3a75e324fe812ef1304. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T22:01:00Z), 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/KRA341628889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc3812d5428e6329b79e438409a19c85c63d4441469f14618b9892437152f0a. 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/KRA341628890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0219a3028594e9a55e8f081e893ea9d0c58bda092be02121f81117d509c621e7. 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/KRA341653155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e02219c53593c50f25a5c605dd32fc4e97eb5a056ca365b281bb3cddbc0344. 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/KRZ291616009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc474dfac17403f65ec7a593e844a6ad848f8d96e0595a269f4720b1c8684e3d9. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:05:21Z), 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/QZEKE1898422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b8979c3507797b3813fc1cd546bad8a74bf8f7d0e6efe58767b77b8d51beae. 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/QZF452025749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28645df745a2f9dbd645f9fdf05e6a89760033004efc69c6499373029848a8f. 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/QZF452025750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99c738dce04839f524e66494066dcca19a42a623559e6a59a8b923093f63cdd. 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/QZF452025752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360a97dc4d94ee789ad3a6c21cce83204bbc51ec791d8215dba79b1309486c8f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZF452025754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6feb58c58952fc8595bbb58ff5e642cb87093577d6b34bfb48e76c7ef2c105f2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZF452026037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b50ea286c3b8b4634756e7852f703fad693db45d1ac60c19621c30cc52693c4. 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/QZF452026038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cb983e7e0ac9ebf8655bf772660d430da0620f00dcfcd3d7fc2a54af810f4e. 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/QZEKE1905349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea145ee2b2937823f192ef57f22e08b53dcc00fc9b44cb90cc38b3466da0e88. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZEKE1810084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d4ab6b48922082fce323bf208c1244b96305b8f302b6a894f2731b2e7dd007. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZEKE1923612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddc2378d2467752d6110359c49eaeaac9a5e54dbb1b9afaa732581d9088198c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZEKE1926184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9a5856bafd112123e1a0cc4e6080bb429bb7f17415e1d765ca60e22c2a5f47. 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/QZEKE1926185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782c9f46c412bd191f695fa3b98affd699350cbf64eafa49ca2b9e91916f067b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZEKE1927455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdc32a8f1032a0b5ce04b46a11b310f4755d2d49ba1eec0c3b514287b2179bd. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZEKE1927456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6172730278c417536ba078d064d741cb29943d0cf7f8a06c4e6be798a64a66c7. 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/QZEKE2024824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edb4a192c5f3cf5e5910aa27cc7e8a3eefa9197ee105da3a8829d61badb37a2. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZF452011773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb4f07f30c10611f21e97ba7538910670d7d709cf00a0c7bc96067e534fff6a. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZF452011774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74db4ada7f3f9eec4c03c179fe7a2a59eea80e2c743167989c27279c2340db81. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/KSA012183819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6565eb93dfab4b330b83631c271087cf81728e40eb9580bf8ea1045c70e80e01. 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/KSA012103935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5fb15c49934cebd07f606f2ce039c1dc915b495120617e43b23f4a6e5bf562. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/KSA012103936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c7343a883b04c2f1db142fbb45059c0a150381ffcdae856f4f42b6880289b6. 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/KSA012107763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52946e7ee8302236c98d176ffd8c6227ab7b2532a241bb0256352f9c099e38a. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:52:19Z), 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/KSA012107764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b681a87e339b0b0d81b68afec3069611027d975412cbc86598dba15f577ffe0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/KSA012107765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7952c227589096c7b2562648ff3b3c384917ff7258098e72a479ad7413876fd. 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/KSA012142910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349870fcff7baf404980d1e582c24c832f1278dac9561c586f0ba9661b2ac6e4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/KSA012142911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d97d406639d0d241c57628e375d3d24acde6e37ae26c559a16084a0849d680. 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/KSA012309183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eac0019be85c2717c622655babb102d3c66ab857d03e90cb6ce335aaede4128. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:35:46Z), 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/KSA012309184.