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 0x64e237eaeef4f44867e1dd090ed0c59a6bf329cd2d85ce82bbc5978080a41fde. 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/5ef97555-3380-4534-a27f-87c082762cae.json and https://artists.proofprofile.net/proofs/artist/5ef97555-3380-4534-a27f-87c082762cae.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 0xa7dfbea5d03d0e0cd57797ef54cfcb10e2569e0f61dd8ba4741b39949ec193be. 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/ATW562200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9629ea625239e8bfefd6df1860c0597357af6dc952739c4a35317fa57b705e88. 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/ATW562200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6454dc0f6f90fdd48545aa42f3da0ff15565acb8a63f1d3f1a346d078f14fc5. 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/ATW562200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2551590de6ef45008ddf7b76295e8defa0ff8e92556915862412b56489b8175. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEFN82004026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500ce49f7f696284e7df10179253d9d9b1d51d05af4021a921f4b74a220a7eaf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEFN82004060.
Die Blümelein, sie schlafen (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7281bdb75d40ccfb94b0eb3c9c7f3740b81996c3cc1bcfedf08a0da8e02827. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEFN82004065.
Guter Mond, du gehst so stille (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4157dac39303bb70d48573384b90271163df18946dd6c684822fbc2814a78ec2. 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/DEFN82004020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f469548fa5296690da13da5f7ed5ea7bdbc97120f364de9fa93dd3f4166bbf. 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/DEFN82004076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa3544ca2802f797eb18ace0dfe7c3c83130401aea32f9dc9a1569ef0466128. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEFN82004015.
Twinkle, Twinkle Little Star (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb36fdfc0f984295108e544e0533aff05cf01150034ced897a6db93e02e9aa5a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEFN82004068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef1edd30334d3e8aebdd31ad3182aa80db9700a59aeba018a06b2b2c6132bc3. 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/DEFN82004012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad05b2a6d8ccd1b6bb89e95822d6754e5507ffc83c5f30f987d956c216f92cc4. 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/DEFN82004009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2812d03a273d5cc3ac393f0c44e8958093b18fe0d4ba3b24c51a208036a85a2c. 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/DEFN82004013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3551a437816a31aa51d0c6b75fca193d9466568113f4a515020317a29e4cde1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEFN82004001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3122708718b7d15b24536bf56df329d330dd3d7fd3d0fefccfcf07add47943c. 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/DEFN82004002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfff508f9ff9abc933a1a343e7f81a6d83c7fa676d3a89e38c28d10e1664a24. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEFN82004004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948387ba891e1d2eb0b08ce113f3a2a734b58c6972572fb3f145000fb664bbaa. 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/DEFN82004003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb97702c8043a5664b8b685d76f3465866895f74865796a0468dd1cc2cc8ce35. 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/DEFN82004005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0651a56f53b2eb52bff014a83d53880ff069b084ff7df648ced2766a56bd0abe. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEFN82004006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05485c4e0d6b62656ef763b388c1114afbbbe39b93da737dd89fc2e32ca50454. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEZC62123957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be228ee404a26afaeaa7b6c6d7d50a6276f4fed366dc11a9fa51fac2e08c961. 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/ATW562100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6277177c4413a1e2a42ea0189161a0d351e56c75b12a5d0029c7681316c8394f. 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/ATW562100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f746e5dbbcd71c62f69f82dd5627160b0d6bc3f3917f4f0e85489074787f5a2. 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/ATW562100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6277177c4413a1e2a42ea0189161a0d351e56c75b12a5d0029c7681316c8394f. 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/ATW562100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be228ee404a26afaeaa7b6c6d7d50a6276f4fed366dc11a9fa51fac2e08c961. 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/ATW562100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05485c4e0d6b62656ef763b388c1114afbbbe39b93da737dd89fc2e32ca50454. 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/DEZC62123957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9213b94280eed630032d387a197c36ac9fcf0ba697e6123e37fd1398638ad76. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZC62194642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9e4548512af27db14d1e9821f3d748df9f822d1813159953671910932262a4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZC62194643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642aa987465bf159f5675ce2b0f43be629493ce5a946baa92cf8e6d3e32bb5ea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZC62194645.
Funkel, funkel kleiner Stern (Humming Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab096ab3b7d86e100052330b2c8a9955da4604e7120249d312b76e79cdf19b2f. 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/DEFN82004070.
Guten Abend, Gute Nacht (Humming Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0806f7c8d523930f4bfd8c2a9bd02703fe6e7c61bdc2c8df4d72f2d5a978a3a3. 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/DEFN82004062.
Schlaf, Kindlein, schlaf (Humming Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196cb110ae9d038a59e0edad8d9a7472482bfa00b93828d004b46f49b0c8175f. 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/DEFN82004051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa2923b7078357480b77f737aea2e9d6d628273960ec8375fb976a8b7de1c88. 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/DEFN82004028.
My Bonnie Lies Over The Ocean (Humming Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a7f55e9dafa88783d33acdff0bb3f0f28b94e41de0cba26698b85477ed1a14. 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/DEFN82004033.