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 0x4ac8b8427256e605650744b61ef93f717f6ace8204b24f506441c5af8dc133bb. 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/bbd0b766-9e30-4391-99fc-052faf8b82ac.json and https://artists.proofprofile.net/proofs/artist/bbd0b766-9e30-4391-99fc-052faf8b82ac.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 0x3f201fc6c7a77bf2df7975bd870b3c60e7c3385a089fbc1c51d54d50b155e3f2. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/HKG732107678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfe8c17206013469d925ae662491024685e33cb2c4dbb0cfc8863d34e93faa9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZJPM2401937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfe8c17206013469d925ae662491024685e33cb2c4dbb0cfc8863d34e93faa9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:49Z), 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/QZJPM2401937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff4cd19da4abebc36b531edd47306443b2934785d290f0604ffa70232a59fa0. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/HKG732107645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1649fc6b805acf26c2849125ff76d4eb4ab727d66b75a31060e36021c058770d. 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/FRX282286674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82e5b0eb4d1f975f3b01f4eab8e7b190e7c4c3bf11979e35e7f939b6c3ae49f. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/FRX282286676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284af10c217316a60966846615bbd5c95d402406880674671ca11af9d49c1521. 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/FRX282286679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb197746c691561385e06b58f3dd0938aa3568f4398c66b34ee1e6c32ec4cbd. 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/FRX282286680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6fccb6b2f82fcc194fe32249672c1d0643be8b2d92480ecc7df191f02fea72. 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/HKG732117991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed094377149eba8910d39e93fe3a975857d4bc959cc940d13c957e93a8d23fa. 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/HKG732150135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237a970267aec451802eeb8cafaa15bfaf2f65220a62f76f0f4a4b38fdefca26. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/HKG732152422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6f4baaec6072280f100117a47d89326a09fc4a514b5a2bbd1cf017e0d530ce. 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/HKG732141442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff50e88b1fbc7c620a48f9625ff2529fbf1aa56a16a820b3e17f36b9b147fef. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:26:52Z), 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/HKG732127939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80922192b563697aa3344cd2204a0db45aebcc80b3e7f4284aeae73fd1da4708. 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/HKG732142844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cc184d71a81e5c6496ff1358c84dcd406411cd0bff50ca482659dc0219347c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/HKG732157419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b43d5bf1c0654d673ae3af451648356e93dd3a55cde3067b9a0061924f427f5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/HKG731738245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a3d360b080c38ede155d40c7eb42d2e1b25590fd4b2212cfb5cbbcbc459295. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:55:21Z), 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/HKG731738246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df9b50768faa948b63cecefd15720bc67682b0673eea1b73dfc9eac776e77dc. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:21:33Z), 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/HKG732122889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efea9ace997f333d8989465c0004607712df95bf765b5b3a11f804f49bb4552. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:07:57Z), 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/HKG731754619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48e6f3833db62c2d91903b57011070af21d6d88ae5b9ec0c9f709049620317b. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/HKG731754647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0b7a6e595ec1b3eb316d62e9c53e07e6803eb6356c6054978fb1d61924f464. 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/FRX452239182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a81655d63b6bc17f90babd3a7da9825db24e252afd35168858d203483140323. 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/FR2X42237828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bb221e550195c0e557c2c013d0490c13dfe08256ff97a264f2e2aa8ebc471a. 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/TWDL72205096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec61c62a69d18dae4841c1bf7581505dbbc8abd8327093f450931b9cc91b4f6. 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/HKD012253974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220dbd49813a3eee36b12141e7aed344e3d28866f070d2ce9bf0dc3425396c01. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:36:11Z), 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/CN2DY2501716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11fdbbdbea5ee3b3058a0c3ab2e6e61f3542b657b1cdeaabf6cc66c9e79c980. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CN2DY2501558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce48ce42ca48445d324c708660e32f8ced7fdb0ef39d62796232ed9f7c84c71. 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/CN2DY2501822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5364394aa63524856f933ea3496c97b50e36a39afc97e7006b1425198a5eba2. 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/CN2DY2501896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea043e6dde10b47a7535df19c16342984c0da85b1f68bfabb91a5f7dc00e995e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/CN2DY2502285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc3925e7d79e852bd629cbdfc8a9bc46f7218b6f49fe6dafe215aa4a28b809b. 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/CN2DY2502298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3022513fcd3de5aefea3d633e4a32e4a87c019b7731afa94f6424cb9551777c7. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/CN2DY2502575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a75057454d485e54cf6c793c2220bb6cfcb868637faf9f128bed6deecf91ebe. 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/HKD012517884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfd6d43e0d9f4ca70246fa9f6f1291892bda96a1ad9a00d64292133c86bb32f. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:05:09Z), 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/CN2DY2503167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dd197f389600d55584e12fa07ac415200c88ca41f9f4d35fa8b518f3c5a534. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/CN2DY2503814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fa009b78915916d8934581e7efda2352a1337f61e38be09977575daaa78594. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:39:22Z), 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/CN2DY2504070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ee47690c14b0da5e07d7ccef3a6a1d0fdbc9b7651c78dc69b02bc8715e891b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:06:42Z), 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/CN2DY2504920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4384d180639a00a2d8438575ef5a96021596ae05eda2db3779ebb34b078d4946. 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/CN2DY2505008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020e77ccbd06065753d62d41fb9a342fce89c038356e0c656ddcf762a2e392fc. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:34:31Z), 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/CN2DY2505473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2be932de81fa834142f97ca288d0bcd179cd9baaf0e5527eaf54c6771efd25. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/CN2DY2505585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4378fea3ca402b3c5f1f40a465995e0c206f3aa635d347567b64a67711fef887. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CN2DY2505777.