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 0xb7e77c4a6e4950bc307c43d5fcfbf9504d1d070e7d07adacb9371fe0c5dc2ef7. 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/6ba765f7-3b70-46cc-86d3-eadfc33db1bf.json and https://artists.proofprofile.net/proofs/artist/6ba765f7-3b70-46cc-86d3-eadfc33db1bf.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 0x17151f8dbe0278a4ccc49f8364f9ace9f1e741a8cefe04bbc5117fbc2f10aed6. 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/ZA56E2200776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17151f8dbe0278a4ccc49f8364f9ace9f1e741a8cefe04bbc5117fbc2f10aed6. 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/ZA56E2200776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d765fa1845d5e826e981accf0e37c1d0b7144041adfb4c15de1efd1aff7707. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ZA56E2200778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16a64026cf6e2da1b7ab8072d4cb51580b8e7b6f72dfb9d8e4c3462023af57c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ZA56E2200779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71219a2601540197bca8b307f7410e91bbeb417de1a19369603e5f6667ace5a2. 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/ZA56E2201326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e188cfc8bfbff8dab714f3acf20220e5c7739db5a413ddd4bdc10183d5c218f. 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/ZA56E2304153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678d25c4019266228fe22ea7f7f426852b1196b76a6816c0ffa0d527ef7dce74. 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/ZA56E2304152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e188cfc8bfbff8dab714f3acf20220e5c7739db5a413ddd4bdc10183d5c218f. 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/ZA56E2304153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c67fdc6cc897beade08711eee46eb98c001e6c6d6aee1fbcc070a2a9b696741. 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/ZA56E2303977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55420821577663166864849d26a68aa83b99b1c0bf46fd050d8090a3f9c066c8. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/ZA56E2304154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10c5973ff51480cbe3f14a4b27d4db51d6e42d02878ef96249d6f8a1d588cc6. 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/ZA56E2304155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2c79635db55f447e80a683d117d1070bc01f80ade92ce3ee134789df615ec0. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/ZA56E2304156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5ed181b81803944dc644b0110d2671bfb4b73106cc86b992e6a309d743466e. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/ZA56E2304157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65be736aa0ea95799a1aac6f164338f3d5e99e98c62ee17c98f8e321cc3bfa08. 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/ZA56E2304158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57642cf3a51bf714383e9ba217aa6a88d03c102a9dfc37963245f730aeee1c04. 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/ZA56E2304159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db07a306716415a1da74f11214313ad334c6c8fa4d55e8464e82659fee0ed92. 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/ZA56E2304160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20cb325c9682bd57dcdc2208c90a748d5bdf0b774d62e15f9a1ed31fa467d7a. 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/ZA56E2304161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe473c7fd0c37836fdeb61c4252c2d48e93be790e683a4f108a08559e95e2c1eb. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ZA56E2304162.
Sofa Silahlane (feat. Nkosazana Daughter, Lowsheen) - Remix
Sofa Silahlane (feat. Nkosazana Daughter, Lowsheen) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656e0b2da10751ecd425fb9d77b8e3b0ceb862ac3bf96c4567786641db727e4f. 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/ZA56E2201602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98eb83f96f453e7078fa360f3d0cd2af60716a4b53956ae8c3f5d372dcb9f2d. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/US23A1575047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8eb79de198839040e24064b12f6395141a09e03247560694afaa63944feb432. 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/SGB502493173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83925163143ec1b31bcf4d04cddb431a6ae00ec4864a2b4196841de68fe5174c. 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/ZA56E2303671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f4809bdff44724d6d0d9cb2c7e1ecb153754db74c5bcfb28ef6ad4acf564a4. 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/ZA56E2303613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd53be76a10985d5cffbcdc238caa6028756c75d81bb6ec6f712126417f6478d. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/ZA56E2302045.
Sofa Silahlane (feat. Nkosazana Daughter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf8dbbe7ec36df00e9f5da90f613350502ad556426e82adba16c622bb7c5cbf. 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/ZA56E2200398.
Uthando (feat. Nokwazi, Lowsheen and Caltonic SA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddaa3d6d4c80ff0859466571a2f086555cfc121d2c0572af8369d91cf39de48. 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/ZA56E2102220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff5b1e4dcbe8a94f0a9a5ac879a743799a4a049a3dda5cf2a0e87907399ff16. 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/ZA56E2102185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4557a3015d89b377969818fa2eec73559d8eb367d8c6e20724ca6e908bbed9c9. 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/ZA56E2102174.