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 0xee77ef29ca823ed8534a2f68484f0476f0979099c4da9edc29406e8a4802ff44. 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/a5b2814a-3334-4ef9-a730-7e124260d3cc.json and https://artists.proofprofile.net/proofs/artist/a5b2814a-3334-4ef9-a730-7e124260d3cc.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 0xb02733a3fa6fe0ea44a226db914baeb5e4e6c3c3ebc4e07866addc6a667533bc. 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/TCABD1245073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb5a8a60580b15923d54a1fa40fd15195aab462584e72a887c5c17825b83050. 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/TCABD1245078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82dff0dfd842e1959c434548fd97b856d004fe9fecc6f4fed451c26ef8e68ca0. 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/TCABD1245080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35877232b8ede8960ccb7a5db539a3c1dc4e92cdeb9c0cdc6097f3d7fad72e6b. 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/TCABD1245082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6aa1fba7889361bf2b2b72c14b4b9ea5561eb69bc6726f7c5c8aba3c1623ef. 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/TCABD1245083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2757135e8a467eec5def7c760d64aebbe59b098808f0f13a224127d243adbf9. 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/TCABD1245088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6526b6a664793c05dd1cb54a707ae166207fa2eb22a7c6fab507d68da80af161. 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/TCABD1245091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fff5d8ee450dfa78f09c80ea15034760115a74914ae0eb38707cd0769b6268. 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/TCABD1245092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b993ade7f1e1be4a99e1e9dcf906272a2dafde61172461f80cdeae93e81776. 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/TCABD1245093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52f5697ea3dcab43b6afaa040d3a1ccf7230cf074b338a671fda0c35a82e91b. 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/TCABD1245094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8fcd0bbfc4b609ec7a6a701e5cad4b604cc48c0c24bbb58a72652df6923803. 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/TCABD1245095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d27152af762c39a73a520948b375d423664962bef78429193d02ad5d7c7ba48. 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/TCADA1732687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fcee1169fe51bfed60538cad247c6be4634df80da95533f62574a203b70a46. 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/TCADA1748122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af6f4a9ed83c2f6454ba5bcde8e3f9e423a538cd75b02fb5af2f07fd0057555. 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/TCADA1748123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2947ac4620ecdd90cd62af9f551b5991df98173ec067fce03f407d747d989d47. 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/TCADA1748124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8babae083f05b3548f1261cbe43332f409352bdc5f2145a10680e35a38e469f2. 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/TCADA1748125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2e360f7d66cc5f1d3d5091c756d9cd399a8fd02105cfe4b7270c5a560f305e. 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/TCADA1748126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5387bf6869787d174edf60dbe3f451b9587c6a0fbae381beeeccdcad442c30. 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/TCABD1228622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0723a2e0788a2e9f35fe28a6c18b7aaf9b7bd7150c9c187fcc6970df3a0823e5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TCABD1228618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e48b3fd5164c0fb6618831e829b8a027f8b8b2d1d675e928042beb77cafcbd9. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCABD1228619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a2b7989051151ceab323244ecdf1cc1943a6978c9e35e9f63175b1e13b4a6d. 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/TCACD1537633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f4fd32708fc1c25e2714b13147d2ac679fa14f876df9b604e2f3815b763c4d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCABL1369636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac456182b7822333fd71b6a68dfb523c4b348f580523c94d0c90ed198b7e397. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCABL1369637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8eb3dec740fb1191066677469e6beaaf74bbcad599c2f83cd139f0dc2640bb7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCABL1369638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c4bb9015b0184c12bf4aa9902898d9b2d787d31614ed30899ddb43dafd017e. 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/TCABL1369640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9734384181ce976b9292e90b3cff89298bdaa1d0441b31bcef8efe5254282ac7. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCABL1369641.
Grit, Sweat & Love (feat. Eugene H. Russell Iv)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7deaa61c3331b58b750d31e6c790e8d2d98ed6ca4c04400901706afea8da2e. 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/TCABL1369642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3b18820bd57f53a2b1cbea0881038fcc0ec01519a310b8755cc48773f0d259. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/TCABL1369643.