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 0x586e13e38c784c808acf1fecf7cdae000fe0ebe44ddd6d9f7d76e0edaf0ae4bb. 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/74631d7c-5c5a-4d23-8fa7-86ccce93f563.json and https://artists.proofprofile.net/proofs/artist/74631d7c-5c5a-4d23-8fa7-86ccce93f563.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 0x5d1e76dde392674d829f9d235dc1a40e20c84d2704afc27d5fc0c1a47f58ea60. 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/USA560734546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4206f0d75c12953fc586c204f8bdde15c22ac1d9a3b7ff12e15a3628fb01b39. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:08:38Z), 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/USA560734548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a05231bc644539d5d1216cc165794430a846c7b466f0393a0cba6cfb91497c3. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USA560734551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927396168c00d8d442abfda05ce982865712ecdde75b1f179aed1844d07e1f4f. 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/USA560734568.
Chevrolet - See The USA In Your Chevrolet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c052fb336d323caf4582a28c2f2a55abb8a5e8bafaefcce9612b3af58631ee6. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:52:28Z), 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/USA560734575.
Chiquita Bananas - I’m A Chiquita Banana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f609f9490d509d12343b4ce6e88836fa16c3fba8cc0a29c8a40cff854289b7. 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/USA560734576.
Coca-Cola - Jan And Dean Sing “Things Go Better With Coke”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5085321b1935b981d17c8a6d3a8fb44e6ee36e7ddc3b2d606be2e7e23e2fbf82. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:58Z), 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/USA560734578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f7c577eb8e8f11f8d85a9e50d5abdf7221eeeb4f7725d58d979038befce490. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USA560734580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2ee5189255b9d83983893f16788d89e807a9913ded4fe8068e85c6a1fda42a. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USA560734592.
Fitch’s Shaving Cream And Shampoo - 3 Commercials
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0764cf660ff9c8ad4849ff2d22edf522a43afd7ca9ac40013ed0f9b75babcd46. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USA560734599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde950428a13b5f6edc5e7c93f9dc9d8e131f19dc9fb055c8ec070c725906eaf3. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USA560734609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8866ec1ba4f8b2f80044db02465e8a37ee77f402e2f3c053213cdba02a71aa2. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:40:04Z), 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/USA560734610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8b2e5049bdbecc706c8a666f8776217a13c6e05b4a18ec2aeaae558533bf75. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:57:26Z), 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/USA560734624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dca5eaa1cd79615ed2a35ed31fa45befc13787116e73b98c534f355e0707e7. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/USA560734626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9038c9098af515ead07c692b4cddaf43379caf570ef4d83ce5b318431f8c366b. 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/USA560734629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d1bab1ae5eacd53695539a2ef12db48510a8205d1906c4961bc8036bafc81c. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USA560734631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba940e4ddeee6cbb440d113ab23a6cd1b20e289344247da906591a1a743443b3. 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/USA560734633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7874f60af3ccba929ecfb02423872bf8e045be143ec3f472b4b7d3c7b96786a. 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/USA560734635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06709182ecb1f365ca681481e5bf995639078382e201eb781ba3ccb47c645bf5. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USA560734637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e5aa6918931da44430f6a53ff5ab4a07a92491e23d250f3e7295be42939b5a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA560734646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad811b45697a501577b7de247cee3f80c6d0efdbf5e31d2000c69f8ff856f70. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/USA560734651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31cf0cce2d24246a68ef57c39e0748cc4e7514f49ae59f255826531a8405852. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:50:39Z), 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/USA560734653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fc054ab90de4b0201cbb23d9325f345f8bdb4d453f5f159d6da46795101c98. 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/USA560734654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5917f2a3cdf1cd496f8e52a9312ea42332d06ef27272e1bb7e8b5a2d0f885e. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USA560734655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420b96e92e949b781cc2ac0c153378d918bfad9e411f38303d009a18c88d0220. 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/USA560734673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe867dc732785170deacd80c7d2f19480c188339888551d284211cf47f2ec9b20. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USA560734677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518fb02d549e82af3185b8e717da54081baec4f9beaf528633c9481eb6b8f88e. 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/USA560734678.
Tootsie Roll - Whatever It Is I Think I See...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec30c387cf73c0118b712a588bc929374434f7f78d730131e566cfb3fabef847. 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/USA560734681.