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 0xabf241ddcef4b04f2b40a18e7c853d458d69429278730d334d5463b59583c38a. 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/4ea85e41-1662-4798-9b27-af298ff03b6b.json and https://artists.proofprofile.net/proofs/artist/4ea85e41-1662-4798-9b27-af298ff03b6b.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 0xf50b58e9fa435f0c6c2c87030e164e97ad9747b7a76a740aa10f7e074ea159ff. 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/GRSTY2301498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74739315eb7f1b9411e01ddea941a49ce0589562a6e4ce73ba4658ad03582f2a. 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/GRSTY2301504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ffecd55441cd2049a5216ede04dc9a1b8048ec56c6d71c8dd9dcca6f92a723. 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/GRSTY2301503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5126fafa79d90111d790cce5d7cbc5f24b7eb2cbaf0291457fb85612faa3b3c5. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/GRSTY2301508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79eaab33dd96a4724f5daec85d59e47ddcacc8333d31646794405933100ee4ae. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GRSTY2301510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d18cfd63941124f112f1c23563da452c6a14630f4348a1fc5563e28ca7f237. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:06:50Z), 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/GRSTY2301511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260f206b22fd18c11a3b5a3eb2f7d24121600238f228107d010cb9b00bbbc773. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GRSTY2301515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a175c5550bc622ad7440599614c9d97d59f5ca5479af6df448ef230ec61627. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GRSTY2301517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bc063ad9f0f1fffc43cd57436f3ac28c255189e70312fa3a460056d2ef123c. Chain 2 (Bitcoin): anchored in block 957835 (2026-07-13T09:48:24Z), 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/GRSTY2301520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4341a87cee99aca6429e95d69334e95abe445bad2b1d0d099640e3c2e3444be0. 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/GRSTY2301480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5febbf2c4871a2dd54cb9ad4d15407cd8971df8fd6a0c58163dc55d43b40415. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:03:35Z), 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/GRSTY2301523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdaa843facc2f0031e9aa7435ef8de99b1c6476e18c2f3646b451a52de46741. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/GRSTY2301525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc899d6f4db822779a3459e317ac9bd9e74fabe28d6a37c3f685853dc97df4192. 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/GRSTY2301490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9a35e9f3a56172d7545bf971c59c37f0275dc92f6dc2009d9488047ec25575. 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/GRSTY2301491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3025d2aac3ef1ec9600e55a577dbbcbc4270f8ed7f15f901baa8b3bb18688f0b. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/GRSTY2301527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd948ae5b653cf4f683ff5a289ead2a04f6553fb2d7875b5678ffcdeedf89bb72. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GRSTY2301485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2026f4cf07cc9838d86937440c7844ff51fd5ca0dea3312f9749bf361fd09ef. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:26Z), 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/GRSTY2301486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5603a82961f6a2e4fa679fb02c67a785c5bbcd8e419ed36dd60e80c83657fc. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GRSTY2301487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b4117fe0cfb793a6c72f406f8a84c347464908381379c0edebdaedcc80fc9c. 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/GRSTY2301488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee3c29c51dd3abba0963c15b63f675ffe4ddea59eec699788d373e8edbd38ce. 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/GRSTY2301489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6209d75bc763e00f08efcdce390f86836fe3c01f30eca3ae073ed0c073ef57d1. 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/GRSTY2301531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f201e75375de9eeca3cfeea4454ccda896cc79963ac56c23910fa4c449d4947. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GRSTY2301493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1804b3506646c7799227b707a20ad226534cde3cbea60b5b54ff06e93defd0ed. 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/GRSTY2302576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c128f67952fb625f7af5bc07502ca2ee24ba24d8c352c66ee25fd3fe8d5853. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/GRSTY2302578.