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 0xe7829dca0bc129ae157c87a27e9b2e49945a5debba6e43f49f800cfc7520811e. 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/b72b53d2-4932-4b42-bd46-ebec4f39e3a8.json and https://artists.proofprofile.net/proofs/artist/b72b53d2-4932-4b42-bd46-ebec4f39e3a8.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 0x4a8454bdeeda48f1f7500d52edfb5c2c3923c1f4689d30240d7c26f262dd6aca. 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/USUM71801604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5618af97b0c0bb4ea04082a68d527bcc69068af4007181af4cb0834efd15009c. 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/USUM71801611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b22d020f2c2ad9eecadc969f7036355320f86c4e76d16759df10d61c1c4ac43. 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/USUM71801612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d54645823408623a27b9217ab64737e93d834bcb83e6f44b6f404ffc0d7019f. 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/USUM71801613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ddf5fef9ae803f31f1f4c49ec7e0a71d80c16b998408a019a98b9e9791adb2. 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/USUM71801615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37ed6e2bfd4dcec5c76db42b79d44632f4b142e036bd1b671d53813378a7a5c. 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/USUM71801618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6928c3e55e3e4d99d0e409f2259c70bb13c13806584da90d7ea102ed4fd4844. 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/USUM71801519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc59cb9660883724f9ad947a7723f32b41d0da4c4663905c2a991d231167b9f7. 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/USUM71801525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426d73685c0fabf844035e4ec9026fdd8de7281e38b218a211b2cb2014e75d3b. 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/USUM71801526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0a6eab5d8b44aeba1010f5076b9baea33abeaaaf1aadbce78034aefa0dd6fb. 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/USUM71801528.
Donny & Marie Featuring Songs From Their Television Show
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3433dea50fb96e522cd23fe9d0c632955b6e12350d5174ab43855415831e330. 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/USUM71803087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b210fa6beee94bd9fc7b89d870674b3b87212ef0eaeafcdb7e3feb51ae366e7. 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/USUM71803080.
A Little Bit Country-A Little Bit Rock 'N Roll
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb50db05ad414a96cc7119239ab676d7725d672ba99bc9c4e0022d16b2f1c690. 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/USUMG9900715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7a26532d36e5280d13f4fd0044188df4586479bb2a28718493b47b598fa4fc. 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/USUM71803081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b17ca2bdb1708f91f3ee73f654d64a5b618cb746fa3fa8824d23321aa55d1a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM71803082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab793611a947af6c058e1ae71fc12c21a861ae4fb4c53051f25da12137911843. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T22:46:17Z), 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/USUM71803083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a353f7fd592f84f2529617e2bc689a9c92546401172b5c11f8965b734995b00. 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/USUM71803084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87b23288c993e38b7814d52a3af29c4f9ebd34fef6fa579ad78e859bb003439. 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/USUM71801218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c1a192dfdd1348c7f70a0677a0c1a02e24f7e1e90a0d43565a50d9febf97b1. 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/USUM71803099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bc777d3923c0db6f94439ebc604c4656779fa643b0ed993562adfc6c5452d5. 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/USUM71803112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78f0a4dc0e0afff36a66159a034bf7ca92d4854226840c214274c38f011c623. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T18:39:49Z), 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/USUM71803127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684ade71bc30ed35efe972c28643daaffcdd54bdf264b2be2099901f7d7ebf99. 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/USUM71803131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d99ecb73a03339fceb3c78b925886553a794239ec51312b749c27105bf89ff. 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/USUM71801221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7120829f85ae6d64964e01177027c6624e08a987572453ba42bc7f00e3022e5. 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/USUM71801229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612fc8cc7a8ef1dcdd76f5899143e4044fc2403cfdc5a8365812b7a0871b1e4c. 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/USUM71801234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4e94454bbce8c35b95cd9df94f7df97cd6e161d028bb66d0e547e5ce45d5fc. 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/USUM71801235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfaa4bb5f7b35d62e9d22b17a3e39c2c01d63e5aea4a1c4d161beb8e16277690. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM71801210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59276916e75d358fcbfb7f91474adb442fc86bf62626ba4f1ab97a60298a6752. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USUM71801211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e55ee65beae2d623ca48514dc4fe1b6d61901c70b9c7fcdcacfadce853caa1. 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/USUM71801212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717c8939cf71fd4f2706cabe32c089ac1466347b7743ea123b986f17c979fc5b. 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/USUM71801213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a971565d55ca0d458213e93b05f850dd769d4dc46c115408738b60238265a11. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM71801216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87b23288c993e38b7814d52a3af29c4f9ebd34fef6fa579ad78e859bb003439. 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/USUM71801218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2e524eab7884224a1dd1307e87c1819215bc0eb2818a7e17a9e896b6d6e826. 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/USUM71801220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea99cb7081e3584a918f8010648b9a3f5efb869de4a54d7f7bdc6c4c3eb64f0. 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/USUM71801219.