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 0xf2dd10d8a699e3465e8f6ca6ee390e25073324cb5a86ebaa0fbcdbbb839ac8c1. 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/7a213c18-da9e-49f4-bb48-ff545cdaf08b.json and https://artists.proofprofile.net/proofs/artist/7a213c18-da9e-49f4-bb48-ff545cdaf08b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chants soufis arabo-andalous (Arabo-Andalusian Sufi Songs)
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 0xfc75b414c348c7a961aad98557e65960d47d4d1922fc744945f0041d3865a214. 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/FR3200304501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d157af1df6411aff106bdef13c32e030f39d6aa0213e2b05cee486ebb015999. 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/FR3200304502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf9d5573d7f38e2adea627adda0fc968cca2765fce165a7e25255569f3ce6c7. 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/FR3200304503.
L'amoureux a accepté qu'on le prenne pour un fou
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e86f9f0a0b2d83c65df652ef56903b4b24014ecb6e0ad102b6603c8fbb5b375. 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/FR3200304504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a3d9d0f2c3393c005995b5d8b0da28b151fd1a5967c7982a1cbc2027f0fe1a. 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/FR3200304505.
S'ils comprenaient les secrets de l'amour de Leïla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f359a5f476aa47de77db68dccdad10a3f2d65e1aa0ac6c26b34be67040cfb2. 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/FR3200304506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22c0e5a4be482460efe8298a8eeab09309d47159f4f6989e7b3ecc8f8bb344c. 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/FR3200304507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5eca3b8557431d4c791119ae296125e71df8fbd5ffe873cc04c4e60302a3b36. 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/FR3200304508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9aeadc872b23b73858dc62af6f5ecc10a73b9e390bedde75ff36113222cb90. 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/FR3200304509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0284b1068f19b30f79e3b3f73cce2700e0cbf00fcab7bb4638124f5a785243. 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/FR3200304510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359b3adccf2ea538d911d6ba09d654740f219c4a0062fd4226dc53402cb6cb42. 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/FR3200304511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e3632ad7f88c8e6744e05ec96c2e16c2182b6fc73e17bd49e8058652226929. 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/FR3200304512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19687dc3c3be9482675102fe615cb659f79e7f3903a39d6cf3fa2031bbc24a78. 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/FR3200304513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7b3eecc68b4fe152bf133e9b0d980d8c5f4352c55fd0383c622add1f38297b. 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/FR3200304514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb9f1934fef6c9688ee2ba9f9d13b4276433e20efe5e742a1d5551fe8944f4a. 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/FR3200304515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde76942515c366192ba34688af42b317b6d427bd0458326f5cad5358c56abf4b. 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/FR3200304516.
Música en la Aljafería (Homenaje a Avempace)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375d651d08f5dafdc16ded4fcb32e3736255be3f5f96583f0f30b7490d14e634. 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/ESA032015501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cde56aefe8873f68f9dc6f8d55ea0c7abff6198a894eb810adacb7567e7faa. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ESA032015502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5775725861b6b8fd3a55ae07a9e959f09ee9982b0ecb785ab4c91f1f9ba4df7. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ESA032015503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f2c71f15c683fcd8a675f0e3bf49cd1d446aae694d3e1fe203b1a5e1832950. 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/ESA032015504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c8cf7b2637b7c8d62aef65b557601069af497d13b55733d6e503afec6e2fd1. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ESA032015505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2f3f6a45b5035d7131fe2720c47863df027ae833cea5929fba14d21693fad1. 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/ESA032015506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34316381e0c98bc2ebbc074e35549770a726862f004978f246d0ce9099c403b. 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/ESA032015507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39ee64f52bef2a6aea8c2b9ae178435d65ebfb8a515831198c8decdd7d96271. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/ESA032015508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4cffa527a5db25b559f27740e5f6cbe7cc5c1960ed4e56978113710dfeebd3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ESA032015509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8628a080ea0c83cbcecd35523ddc57b87d8761327095fa2e36c2afbdef997181. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ESA032015510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5baa9abc518ada0884ac0fc81999abb78bd5ea00f4bc7f911d4cd9946ed2789f. 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/ESA032015511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384e5bf18c0dd75c1acafbe89dbe53956c5805c4c95e312800cd7627df36a769. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/US83Z2300239.