Isaac Joseph Gracie-Burrow (born 28 October 1994),"Isaac Gracie - Happy birthday to..." Facebook. Retrieved 20 December 2018 known professionally as simply Isaac Gracie, is a British singer-songwriter
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 0x5a1187b93826cc507ba0d20f5948f4cfdff63c195bc7ffe0c9a61ea9c3002f7d. 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/a0cf7696-02d6-45ea-8ea3-1db483d66320.json and https://artists.proofprofile.net/proofs/artist/a0cf7696-02d6-45ea-8ea3-1db483d66320.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 0x6f240b578efbde6b19276fa5214638fbccff6f564b3312754bd3e1786a3b6c0c. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/GBUM71601333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b3b431f9f38910c5208715e22500cb7fc301cee8f5399cd9d74ae63349a161. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBUM71601337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea88452661abf4ff8a311813cafe65b44f5984269254fe71a69012ea9034244a. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:58:47Z), 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/GBUM71601460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04064647ce0d0bc94d83658ea9ce20f7d64fc411bf5232e8b6859f014fa0550. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBUM71601334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aff8789d94d42e50b34c289b4b413e618d41bad9ef2c12827a42119494c31eb. 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/GBUM71601336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b3b431f9f38910c5208715e22500cb7fc301cee8f5399cd9d74ae63349a161. 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/GBUM71601337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aff8789d94d42e50b34c289b4b413e618d41bad9ef2c12827a42119494c31eb. 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/GBUM71601336.
songs in black and white (live from the waiting room, 29.07.16)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba087e5f25574350db73c74372d8488e678c25f92d0abd6452a85d8153b564af. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBUM71604900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11271b4bb03c5e57d3c8b8839ad2874beaa1eefb51b1908ae0c7bd4202b1fb6b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBUM71604901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f7fa123ccec8638f5831fd16220c37ff542741b17728174eee276c4d14db66. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBUM71604903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb90d22418c21cb3d241b9cb512acf3c7e9412907070a80c35cdba6fd4e6360. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBUM71703163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d23c5ab8dba3c64c72748b4fef805abc9ad7a7d19cd4171b11d642dce1bf11. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/GBUM71703351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b650d88e93e125eb1fb9b1bf7aad117994f0510b43f1810597ee1ff54c3a060. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:14:54Z), 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/GBUM71806352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6128c494a402983f391ed5e52a60cb7ccf55e613bd5639c896e3e3e2de33e4fe. 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/GBUM71800210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec09b40f8a2110442113e79117ae45552f03c11413f657515fa53b0b72a761f4. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:58:57Z), 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/GBUM71800206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510fe4fc2fbaa94b89cb03c408037c80b0f08ae8a4d982e59274cb636df49994. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USZXT2350687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bdede6e9aefbe093b098db1fd39982fdf0c960e8dcc45d2d9e0988556993e9. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QM6P42405331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203380ac37ee6b63ee13c2cd2e4713959db579a0ee5f6cfa4e9182c73dbf8884. 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/QMBZ92460003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e746a337fa73c6b711904f4f14fc62ee1580c0e4ea0da3c43e9efcb48f249e. 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/QMBZ92406091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf204ba6ab494ceaaf43420faa9b2a1fdcc0aa0d36f9ae00a4be44ad2120d9ac6. 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/GBUM71800232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbe9926d3d6334c8a2e7248d39776f28533d6339d1111c1a4f54220413d578e. 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/GBUM71806358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c2ca86036b20141aa16827da1067db13db35cf4524090c1974cb8364df48eb. 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/GBUM71701709.