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 0x6a75325827455b6118718fce7ed98424184d51e39afa69897a166b6ab297a6f9. 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/d3cfa10c-2a8a-4394-8b0c-612eb385f332.json and https://artists.proofprofile.net/proofs/artist/d3cfa10c-2a8a-4394-8b0c-612eb385f332.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 0xe21b151a0e30e77064a0af1ea0a65ba1c6c863a89e499020859aa2232690aafc. 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/QZDA72286134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ef19e09b65a97cc599e15154673de2ef16eba6ee20d170b6cf6df471c55447. 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/FR9W11108751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65cdb0fef0e43b8636c06c8e41dc307c7fa367b3b62b012cc9c1652d53cb916. 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/FR9W11108762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cddca456e112c167a60d39238f3d96f77a85292450e861d3c16328fcb38fbe. 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/GBHYU1000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d1e7186f39652effc214f1dec31d5b07d4bb2cf5d23d1e9691d19cd677a236. 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/GBHYU1000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14401e81a2d6173bbe0bf48351a04ac2b3158103b0f379936ca47e317205605. 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/GBHYU1000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac077dd1fba0c2792915ee55ab19e8788519bf8f1a0889ebc0349bf08439b07. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBHYU1000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a156b48d8bca45ef95ecad0d2fd8a39d1cba4ad9e244ad6e1dfd6f5527b78e. 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/GBHYU1000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0d5a9720f6b8d4a27a6aa0ecace48b5207a3a32b6688a13064c0b62f057d36. 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/GBHYU1000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d256a4c7d9c3eac6aa70a76aa102bf6f91854e279c9e886809f05df78a85a23. 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/GBHYU1000076.
Polaroid / Roman / Photo - Cotton Wool Mix 1984
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47b1c31a3395d4f29263339d767b3a2a236ee5d1d439aaf101e7f2ec81e03e7. 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/GBHYU1000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646dd1f3e1871b60c9ed855d717bb225e786c545177c1ab718c1a29363419d63. 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/GBHYU1000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dadc512c9e14857585b2c7eebb3f86dc628f695f34f519ebe6a1958800bd2b0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBHYU1000078.
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
Sans Mots - L'Orchestre Inachevé, Remix 2001
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5541ea9a52ad1302cfae95865005dc3f24b8f317b55e653599ef315ff3a823d9. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBHYU1000079.
Polaroid / Roman / Photo - Instrumental First Mix 1982
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3c1753df868836788eb3a89d70032735b861b9bd673c71515a745683aa3122. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/GBHYU1000080.
Waiting for Mabelle (Disco Amusement 1979)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82136d50a607e2d159aec34a38add678620ebbe633337b67a000d4107c7bb459. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/GBHYU1000081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07544c2e009301864ed1d52ac4d24b44e4bc256c3a3e63f6e88831e250e5b452. 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/FR9W17800060.
Cold Waves and Minimal Electronics Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfb12feb90fb85c37759cd5c183fc4f03786086b711498dc066cda52d45be67. 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/GBHYU0900133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eec8f11c422299338e539077bf929bcab782be56ef1b08c5e057bec9f010894. 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/GBHYU0900134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7f2209c93e635d218f96f729f5c5109050bc98b6af1c4c08b4fd5786712984. 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/GBHYU0900135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00319f1d6b6e18432d602534c81eacf5e1509b95bbd8b65ac292e5216eba5c06. 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/GBHYU0900136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802e29b516fa785488ab531207119fd4a9991aa874cd7cc2a3bc124805af265b. 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/GBHYU0900138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bb4764550db6d80a3deb3b4fa8ac8be1d6928771f62fee8dd3bd0e8402b590. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBHYU0900139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3900001962ba54cc12f36f384caa5b28e92d2fe73cf63e0075c334d441121135. 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/GBHYU0900140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a4dc590e206b1bc29157d0d76c93b3673d04938330186e6109e7014f3bf42e. 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/GBHYU0900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3f77ab9cabc1ed4a42bbe211f9e65cf27eb387d1bac1bae31606e4784f9696. 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/GBHYU0900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea320179f1c7b7eb2ea900f6907979127d3c6f8b512425deed9b8305cad28019. 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/GBHYU0900143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379f60e182a27cc462f18f15959d5353a630f74159c142c28c370f52290d513e. 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/GBHYU0900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cf3d0617bff344731f8d6d88947835d585d70990302a59b1512ddf7f6a81cf. 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/GBHYU0900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73975f0e59dee01fe620d007e351e1914c873d41422101f42e3003cc6211f3e. 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/GBHYU0900147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d58f867c68bd90d73755b32fc412333a936d4fa063e533899020183013b09fa. 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/GBHYU0900149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494c2af6376c2251c4c21f408a499a20c46a80c1bbf30a2c91f1d088c33cdb49. 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/GBHYU0900151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e2418621dfbed85cf5a247e5deea5f7e7b5041f26dc1ebb9d8fd1e42e7617b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBHYU0900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396ee294b054929c0c500246a0c46f740cd488a9e7b23b4b402a8c71a4ea2fd5. 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/TWU712104499.
Close To The Noise Floor Presents... Noise Reduction System (Formative European Electronica 1974-1984)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178875c72d57f92814f7306a498a0f13c2964c07b6de26b0b4c07ba895b86eb0. 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/GBBLY1704682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c4bdf7c6d6f62ba7866515b36c68d47db9ec790fa571595b61c43d71179456. 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/FR6V80523435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0504e840457937166e47b4b58cf622c4fa00fe99aa5d9a3f9e843568935c44. 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/FR6V80523437.
Die ostdeutsche Schlagerparade der 60er Jahre