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 0x1d1da349df2ecf16a3e5e26386e0081f15758bd04bcb88e13d6554aea8dfe309. 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/c3b8c49f-9ecb-4130-b643-30e6d3c70afb.json and https://artists.proofprofile.net/proofs/artist/c3b8c49f-9ecb-4130-b643-30e6d3c70afb.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 0x30f7b7e849b5c775847c3100444cf71b30944122703f2cdf95141afc6ffc153e. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:29:14Z), 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/ATR981308986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee354fcdfc0a9fd97497f8165cd820f9d280f11658c8089322be9dd4f335ee65. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/ATR981308987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c67668cdc820a3d9c988dfefbd5795dcbb5f986b09fa7e5d503b15db6d8d597. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:09:58Z), 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/ATR981308988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1337f10614f8eedb0299c510a74104946b6ec86981314ffcdb879d8a201a4d. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:39:59Z), 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/ATR981308989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d5c96a76f2c761e000985a1f920dca9d3c356226726d14ac11fb677952c558. 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/ATR981308990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75cfd5d5616314f3f9e853eaaac2c34d2ae15eb3ae5c140ac96f3052231d227. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:01:33Z), 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/ATR981308991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a650258d2ac9f10424d58a39bb0352ed4a747bb9624c3c8e7237efd89f4294c. 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/ATR981308992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc531ec6b676046d76034e337e0462f57e791b2f551bd67e4fa35761e9f388193. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ATR981308993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34bcb1683bf41ef034e21c3bf7f8d65ddc4cd5e1e5d4ad2c76f7d4d43e7e842. 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/ATR981308994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397c25c9480fa7d18188273ee8e540910ad1e1da9ff254613704c78ec67d3996. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ATR981308995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf5ba5a2a43ea1f6efe41d6219e0a3535ea863eea7237ebe26c668a6f570775. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:08:34Z), 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/ATR981308996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458e75dceb26b2a6969df1c32b55a3248c5128df8cd1f5fb8e927c9cef1aff3b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ATR981308997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecdd6c90e395f92d1939e8c642c732b544762e2600920d60f454a80d1aa8f88. 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/ATR981308998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e05acb77371377c58a142ee9893ee362c66565c7379b56ab8680a87fa2cd585. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:12:04Z), 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/ATR981308999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16364238ec3a3fed225a57d3ccfdc9dd86a75f9f220d1bcbc4770a1df2990cf. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:17Z), 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/ATR981309000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8536b6656e6f3535c628d0ecc86e2880c25a022d482e6bb76be383d1c94c33a5. 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/ATR981309001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f41f4c1127d52ae5f0dd973e2a858d9b2369e74338feb993df66e8787135253. 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/ATR981309002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741358d57372d7e1caa662c69dbee5e40d32a101a5f8694b3bf96beed1479ebf. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/ATR981309003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809f1a8468a22e00cd294a04110a52666d93927c186c9301c71204185eda0f26. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:46:29Z), 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/ATR981308974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb272d7b15f31e5b52c3a1ab08c9f7cdbcc7a1b7111471098046e99e76c77d37f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/ATR981308975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2d5adf8e441413fdd1ba093759c34c7d059e12a4cf358617b15673c32cc068. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:06:42Z), 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/ATR981308976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28bea2f87941b2a14a6600c2aea63e4e6ddcf8f3dee25873ae09c0e5491f05f. 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/ATR981308977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd6afff9b242dd32ba50fa304a0774a3d6a73e04d0d5496cde5ba99da1a7826. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:43:37Z), 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/ATR981308978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5db9ded469a967fa496d7968a5e02e7ba2791935d4625982b83e38a4d304522. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/ATR981308979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccd464ba9cf4f63f3195639d9937ed975a8ef3d2e225cfb07a295be4b302a3c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ATR981308980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd762d93502f189f715085d73b3c0863b6d9991aba2af9d3f49c84294d8ccfe42. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/ATR981308981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f01684e4b362689b15835c81f105a5be153ee7373ef4f4633a6e77d0c39587. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:36:34Z), 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/ATR981308982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5b2a3f33388f32f7ab3ed6680951a9f40d6316dfba2ade814184f4a926b85b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/ATR981308983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7331b3c905cab97480c2292232a1175dedf8e5f095af591d143838df7e7ebacc. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/ATR981308984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c78f2ce97a6a444a43a74d54d58f377b01a93299365956bb3d9c73fcb3e81af. 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/ATR981308985.