1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xcfe62fbb3f71204da61635d197427d35e92210b653f39e02bc8277e9000f070c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7bfccc3-aef9-442c-be89-3907a27649c2.json and https://artists.proofprofile.net/proofs/artist/a7bfccc3-aef9-442c-be89-3907a27649c2.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 → block OTSBitcoinBlock must exist at that height 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 0xa3a31f58eb650126d8b09ec3b5d96814b8401d381b6a6aeda7c51d02a68b5b84. 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/QZNWR2224228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72bdbaf1df2e1f5656230b5f91e1a838db157e87aa6dc9662a1ab4beb232879. 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/QZHN72330277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4bfe3fb72f3009cf2e21ab8cf967aca003dc33ac01fbedf7e8999c0dd96537. 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/QM3DF2269645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5068eea8f62a406fecf67a3208eaab6822e76c1d2789c900571204e8cf546699. 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/QM3DF2269647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c17411cf965727a864450e3aefc301b3cb0ff9619c51b3e3b86ef99dc1c77c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZRP52381633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ce84b7dee29b3c2ee26084a78ababb826d266dc14461ab87a13f56dac65ab5. 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/QZTB62379938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d94ffa134f730e4fec8141966c2024068fa05c0a87ae6427d72ba9c933258da. 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/QZTB62379939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938f802b16663cccd14d67fcae55174d32804398f72b3a83e256e6eacf9fb6b5. 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/QZTB92348058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9746bd45869359a724a4c60ebdb54eb5c967b829afe56c2cf20e1d76b214c70. 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/QZWFE2326407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558603524bb35ba2a80637fd0a152e64e1b58d7523e94bdac300f9bcbfc968cd. 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/QZWFM2378956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81de5041ae105c6a4acbf3f94d5e829532f36b06870ede207f655ca4961328d. 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/QZFZ62444433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8156226e320fb5bad2491a4250693af67e52d7fa87efde9c9331c45c2c9ba8. 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/QZFZ62444434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c864267943df6b19a7e286bf360500e6fdef55a1c4ce2ce0a2ec6eced880ad. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZFZ72457497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01eb9597aa8c6b42787680096211bbff8deb78dab04cb8a067eb3b54e641a6c9. 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/QZDA82441990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d9e4b89980778c68eba157d5b4722ccf8664283c6442f49f30816158432414. 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/QZHN52446206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ae33b6c03f1be52e7c40741283ad04861fca2278f7dd6519ab679f5ae79b0a. 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/QZRP52381632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc4fdfee34b931b7e19f9c97c01b64d4d241d1ee95ef6036771b9969339cd39. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:00:25Z), 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/QZHNB2462369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db6f6f90f55ab018ab84e4ea2625c460ce486acfff1030d4973fb06db62f3b0. 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/QZK6J2438189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e21be17b59dabdecfe05dddab6c560374a9425c9b55041ec765f1a9098f32d. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZMEM2481474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515c1a63aed1a8c262581e94c2875dcdb8e03c13bb7a80ae14f2e3d1245f5539. 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/QZMEM2481475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd530af51520ee8a76dfaa74ef7b3a1778fa2c9f63dd76d0877acb951cc1f1a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:32:32Z), 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/QZNWU2414680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00ca7c112cba1a82c04e9fbfeff8daf49afb7d948324e6e08f0c4afacd7cd5c. 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/QZTAZ2436696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf37622e50eb43cc7678d805511334c9f8cb9fe2cf1204cab13f15a41deaff6a. 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/QZTB92411468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b81d6f74303f031723bc97cb155ad1fcedfb1e73824e07b0d466b8242255b39. 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/QZWFN2452811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e39502860ed2a61c20a8b8789cc3c726660d0ed4bb11d62fe08c7cf0562438. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:40:47Z), 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/QZWFN2452812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5227bd30f3602b615ace9cba81b78eb2f4aec3fba9262cc8d28530c29712e2e5. 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/QZWFN2452813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ec9e3c2139ce252b24661a4cd27e445dcfb61753c94038d5030f465b69ffa5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT3EX2466444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8236b057aad601b35f561b8a878a83fd5b74d094e8bd57ed6633e627541c824e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QT3EX2466445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003c94022b3f87dfd48e5cc005706f8423fd101c7cf7743976e8b8dca3d148d7. 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/QT3EX2466446.