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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2914bdccfd17d939b0396e15a4960f82ce2c830d15987912256566d53f2990ff. 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/972c91d2-c747-4450-bb9b-d678d88eaab9.json and https://artists.proofprofile.net/proofs/artist/972c91d2-c747-4450-bb9b-d678d88eaab9.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc976bc99c0151d08db094e50a6983166de73011f2399661c966dbe2e994e43e4. 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/ITBHZ1500999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce904c4b7fd300ed8c6fe8efbaef3af54d24805509d53f0645301c21720ebe7. 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/ITBHZ1501000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1709340a1b81803247a6667b688b7a5ede14e41e4e06c308005c3d8da8db8e. 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/ITBHZ1501001.
These Emotions - Lewis Boardman's LA Rooftop Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94a59ab97db11d5c43cb0b6b8fbe03231df1f3b73c6f33603e3e1114b99eef4. 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/GBQ5W1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8862b85a8fe99ef99405a6b2585a85353a4a24a1a2d76bf0edd967b1de2a6b17. 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/GBLV62417255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e698b1e5be8f373e3a8c8d41b25f42f2a38a953f6a26e90f1aeca07ac96e82. 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/GBKQU2487563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec0ab3f7d799bcfd1c397aa92777dcc0d8579c14ffa4c8f89d9369748a6e269. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:38:38Z), 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/GBKQU2487564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bd0b6baa73949529d5867d49dd0f751bcb459ac9bb27a66af29f04f09dbc53. 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/ES94G1915206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9d28f9eaa3251f6ad0875127fafab8e4a0e96f36fa1fe2dbc178e5da6739ae. 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/QMSNZ1601240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4014d8a8811bb1cccd47628a6e809ac86b4df775c95f120bda1e9c51867bea. 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/GBKQU2450428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061eb3c3c0bc0b19ca099619a9bad62b8a07039e698f796643d79c7c4b6133ba. 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/GBKQU2450430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc679d965c1e73be6ba707c33643bca586e627a3c3b1304ba3011b449ff5e04. 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/QZTRX2408354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2719e24fc991712899f07c53b3da46a4735d895aa912c4e34c9fb4e3c00be02a. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBKQU2440598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc69ea28f48c66b042a9120f908d068c1227e7f10feec5fadb4056f5f0ef7588. 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/GBKQU2440599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290802b14c822e7ee6a07f420ba1dc7908863f08d41a8c279491e9ab13fe7fef. 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/GBKQU2333075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7619e7fc27878c49727e35f9b858a463672561a693d2ad6ccdd414a8a96e9e. 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/ES94G2221404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14e48895d65b7e81a5ae0363b4c9676bb7a8fe855e0e80dee258cdd1ab41537. 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/ES94G2221405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbccb48451be7282fb1225f9ee433083d3296699e46c1cbbe834aea69dceb82d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES94G2221406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99da3fb2509c374809e21e502a3eed4a927d46b2567a9b6bc807667f19a11c72. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USLZJ2285512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113803a249c3955c248bc720d4b26360aa0702a368a6052db79ae9dcb741f562. 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/USLZJ2285513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3caa7d4b64ee24ec2896e94d6444953e7048b6488a9dcc38bf36a1fec37fa7e9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLZJ2283855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4cf9af1a6a7e9c0974a248cfa13451a799e324d310ce9b9ec20af2bde987d5. 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/ES7842028224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8290edcaaed56830f25fc2a4d7f84f82fac0b85904ff346c19eee0486e35801. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES94G2018203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b67b686fe19484e32dbaaa8d850083e685c96ddf023aadeaa08166878d7b3c. 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/ES94G1918204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46070185bfceb4ef008de557380b235cba3e97b9d2e81446d91d8bd5141d20e9. 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/GBJAJ2000801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd414cd0c2620c8d346cb90d56b49d1f7f7229fae9a8ce1debc74ae04c6cd14b. 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/GBJAJ2000802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c01b721b953f91086258ddb26766cda10c1e81d6a51756cafd77d5b84c21520. 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/ES7841926903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddad5e6990c4d2178f0fa539fa6b5a0150bedd06339ea84a6df66ac6e669bc2. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USLZJ1974323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bdf63860197c9c3bbe97ed0302fbca9a80c3c78e0bd239a061d62e3de77c6f. 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/GBJAJ1901780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038e0c7afdcedb18f60543a3b7e8bcf16bb28cba35d68cb64dbf5c36efe8582b. 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/GBJAJ1901781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e70ed024180d5f8e51edc56a137c0b726d58d4bf60520770cbbb9b85ec5a40b. 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/GBJAJ1900587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f623ca8fadf94919ccc50e122e0180d14abc05a556e0b81da9009f12ea81a5. 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/GB9UU1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bb7ca7abc195eb7502ec810e92d557e94f37485e7a093ec5d7a22fc414f91d. 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/GB9UU1900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b90c813938c535a4793a5aea4fe4b64f693dc7b65730e069c079406d973b15. 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/CA5KR2537146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f32321b4eb9d7864d59110dfbc3a0caaa37d24940443e305f36e4cdb8a3f2a7. 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/CA5KR2537147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7291213c924caa803a7eb949ec7d06623034422b4f7d04d56f1eddfe7f65ab. 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/CA5KR2537148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cfc857de91c05ba734439e191d3cb126bee32e292776223874ec87400676ce. 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/DEY472378226.