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 0x3f22e1e2146be11b73916d9550604b7256711a5736d4b4c4d06f55665ba9d15a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bf4aa1f-cf03-4343-abbd-b7208a78609e.json and https://artists.proofprofile.net/proofs/artist/9bf4aa1f-cf03-4343-abbd-b7208a78609e.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 0x98849bac93b350b8c7d8ae1608b6b924fd1e4b82537ef85e0ac3ed467086fc00. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:06:06Z), 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/QM2PV1844483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3810b2d3a9971965e3a701eed8b51acb10189f99531fe5f8ae767b29d6ca2f1. 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/QM2PV1844485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f6370de2b5def8dc52596c2870b4bfbabb9b337e5e9c59bdd0761876b37fb1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM2PV1844486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b6012344619c87f3894d40075597a24a69f3959a37dc393efc4de256036041. 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/QM2PV1844487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513c219f3b74bf4f0b0fdd423d39100a5c26c578716e3511178013da42b699f5. 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/QM2PV1844489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53427c88bf31cef9acd7668baf5c99d6f311a4786ea4be28628feaa60c4ace6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:35Z), 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/QZES61802700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740ce6eb4bfe8ac15be02d2e3f106e204bf88b32de3c4a1f76732b28c9897a45. 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/QZ4JJ1961634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7469a266a62fa98aae2572b0fa36c9c39f1995a9f90270d505a39c7de2797dfb. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ4JJ1961635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a450636b6e1af2fbd45572bd9a5c45e0feec24b6f3e871343042cbcb511e850. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZES71923016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ed120528d9e85063c54dee7b9d0a1cb3ba70907ce994fce86d88c47d6374e9. 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/QZFZ52080205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf34b3b08a61c7ef043c8bfa9599b2aeb1cc246aa359e59bdaed2a8493ab519. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZDA52007555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882823af39756c4c029f7fd8e4f7f49a0da9cb7be9caece39a407a8c49d21dd8. 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/QZK6F2070056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a062fad2e36ed4722301d94ec39ae35f3345776b6628de1353e39e16b797e67. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6F2070057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a81433092c8a5d4bf9abaebbf5e39f75c469c63f6896f4011627ce93a0c6f5. 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/QZK6F2070058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795bb80d63157641bb5a8d7d5aa054e8048a62439fdfb5e52ecbdbbd3973ceb6. 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/QZK6F2070059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373d92c001c993a4f5448027ec982153509e24ae022869a5ab3cf02774465077. 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/QZK6F2070060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe130fabc0dc5b0ccd1590c67c8d98563a58d5e0b222194240fb9f85fce7fc4cc. 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/QZK6F2070061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890a1d313ba5709fb791bca6c3c17d25bd5edd33467542bacd76e8ef4dc46948. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/QZNWY2036377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8097758fd2743b9d6ace407f00d1a5b7aaf7a2e0fe3b7aad66f7769e0a17f1b1. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:55:44Z), 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/QZHNA2165299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162e23bd86fce7d1862a1b8cfae5d4df39688eff9b1cf789b7e262c5ed52ceda. 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/QZRP52292900.
Christmas Song (I Don't Want To Hear Another)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1024c35e0be91738211e4591b5f9ba90fdfe2e7b416ac32056aee2523b47ff. 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/QZWFX2499205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f2219b832b7f130504e8114616940b0249302a0ad54c7b35ddb9bcfabba348. 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/QZWFN2421537.