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 0xaa748b67d8f073faa2e3363310d35ffc6ecee254f2de97651f2a9566154b5631. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5314233d-a506-4461-9417-565af25ed99a.json and https://artists.proofprofile.net/proofs/artist/5314233d-a506-4461-9417-565af25ed99a.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 0x45b397b484cbae37355e0a8310d1fdfb2ea4919c1e15bfe091b5e33d527b4d2b. 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/QZK6P2322510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59a90f0340f5422144dbcd1326c4eb283a8c91fdeaf4996df64f5993392cab0. 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/QZK6K2360164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc703f48d1f0ebe8a49c88abf5a46cd044cf628ba79b83ec2ed79452b0e70da. 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/QZHN92382592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe87df0508b4a00154d623bd14c9cff0d89935d6b78be8259ae3407c3690a14. 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/QZK6K2360165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129985b5a5e84ff15e033b14a0b4a8054de8b316eaa3bd50662e9b1acb0a17c7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHNC2337253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d80af67d2c2978fbf43e8841b573d9597752c9ed8f44091ad4fb75384c73b01. 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/QZNWT2278455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f443e6a59afecf72b4ce02ce8a05e75cadb81d7d3f3b065452a24b26f2bff0. 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/QZK6K2360166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fa6a5c3e7089f5575b70ebcd156fd07b7952fee0e788d6f0d6953f5361ba58. 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/QZK6K2360167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3663974e8c1d8bcb2ab74b8a849a0497db797e59d93fa9c110ddf85c96cd044. 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/QZNMU2207175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32dda7408cd46b35c405d20d9e08720d700a3ad78dd8bfb09c322a626de43d07. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNMU2207178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5235a19545c3d93011197bf5b67c95c26f640fa268c33067abfdada2d298f74. 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/QZNMU2207179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f394815013cb710bc068815a25d57e9d0fa5a9278e03b2c87d16b27f07f0167. 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/QZNMU2207180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3f59752da93366024328761149cf84c4a47084612118e27c2d7e26e4781b8f. 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/QZNMU2207183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e9e355852c93ec9da20dfd5b485dde4cd601d920b6e85a033eea53b250f079. 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/QZNMU2207184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd93f38c666b7827a31704a25264321d3f00b0becb5d298932813a31f954e9e8. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZNN22391708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7ee76aafc4057d81dc4c8934f1da0ce2df20e4d2359ba4c1b9646e756771a4. 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/QZL382455218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7073f3fc785b5d6325d621a3e8eff2df39da8e3e8ccfcd0d8b1af80f8c564636. 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/QZL382455219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d7e4338e0f8ac63d9c5f77c7ec32d76c3648d5914aaac69674a5f059a08368. 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/QZL382455220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4e54c5864a6ec64e6637dd97128e186979aacc8945c50f627d070375a37c05. 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/QZNN22364152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccdc51f6ed06f72f9438fb9ace04d584dda44e2e5fe0268202b46810deb5558. 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/QZNN32309020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776e89f9feab0114002e0c2d62513b83ebe4feca83d31c81b5ff178162d63133. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZL382455221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaeeecb4ba002612db978529a3f9504a75ce9341ab39af72684673756e1ea47f. 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/QZL382455222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648c9a9818c51466eec9b9a660fb6e35d482b8f4c6090c60b763ebba0f2a649a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZL382450427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0f38ff5b2e9dcb6eb2aed22d23b874448c1090c50c11b5338b7ed248480d90. 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/QZL382455224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b397b484cbae37355e0a8310d1fdfb2ea4919c1e15bfe091b5e33d527b4d2b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6P2322510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf173cbe97b0527e60f4962ce74faab0a33dd0422edd7a74932572f510dfbe6af. 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/QZNMT2258026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4e54c5864a6ec64e6637dd97128e186979aacc8945c50f627d070375a37c05. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNN22364152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1b5fdd44c8cf26de3e9e7541aca275793781d5e6967d852eff38e436cdc331. 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/QZTAW2244024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89fa33f4b02c2ee6025b0675fcb003d4ba539b57246da5ca3d3199f3adbc6ba. 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/QZTAW2244025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dd1882d845d966815d5f20481d1659fa6bddb6f97bddee8b522cc833e89765. 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/QZTAW2244026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7888f3627f300e021b44787c3b4c583e4ab83f53ce1987ef6e389a37e34ebe79. 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/QZTAW2244027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733ec44335e088d71c102d201a2f2810be395d5efbce8190f16f83949ed47590. 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/QZDA52505660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b34c97c0cad0ef9ceb37386f8f9256979639136e96fa3d998e177b33d3ac40. 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/QZK6H2530611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9067d5fbc7c5d039a30ca84bfb298888aa143d92f5ddd7f42d919218f5399e1. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZDA52505662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ef7781c139a13f5a93f976cc74c49d73abc0f7dda5d144a30e4f3c668d1a51. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZZ7V2462334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4bc040bf7d8fb2a7af59d04917363db37d815954d978713eb26fefdf99417f. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZZ7T2406345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238ccb79742ce8fe08ab5602e4b7de7e412c43f6c3747a4ca50836989e500035. 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/QZZ7V2462335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b09be1d512d5c254f7de447a23aa43ce3c5ea89943fd9a6367791c8150efe3e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZZ7V2462337.