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 0xa32c0fac4cbfe0e3130209845d4876afc6bfdf7d154739090602974624de64fa. 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/94502e1b-ebd9-41c7-ba0d-50055d33cd51.json and https://artists.proofprofile.net/proofs/artist/94502e1b-ebd9-41c7-ba0d-50055d33cd51.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 0x3938a926fa251443eb9c65bb3f06adce5caf74f3e6ed4c00000b31a98ba6a4ab. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:28:13Z), 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/MXH152100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3fe127ba9d229f04e64c3b57fd7a38abff72799d48916f1e152346c9b16f84. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/MXH152000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cb99e581d59c1f343cc933b55fa864a1eeece3bf5548dc269dbdf749f98ce2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MXH152100557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9b6a13f52b03ee2c3a2abc7b1699f9bd04e0e53eeb52679f90349393fcae90. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BK4DA2536866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421ed0bee38b3e395169bcca35081c14435dc455d0fb65d398a6dadf1e853d35. 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/BK4DA2536867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6c5a3219bdd4a6bfc7e8164e5fe93d17e7e03dfb06d554ec5b4cd354cc2de2. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BK4DA2536868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427db8283a44644dcd9db09b4855f2309cbd49c49c5d6a0da8734a088758040a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:29:33Z), 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/BK4DA2536870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00930853619c35c187ae1eb82c37315e2388fca0b1b340454db785069c77a55e. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:11:16Z), 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/BK4DA2536871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950b94b39c19442be799baa5f27d2c001624ec2758362963cd78cfeb0d0d6a80. 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/MXB712000182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f86ac542630ac03f133916fb437e3585a0beda9e70ac2b4bc372481518a38e. 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/ES71G2312897.
Depósito el Penco (Desde Guadalajara, Jalisco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbae9d161db9b6c8b0e5506c0af32c2a4bc9c0fc69c32cc9790273043c6d115. 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/MXH152100169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf807b5228f09081106538d3862c1a63e3127f9e4ff37398622cdd3262b24f234. 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/MXH152100187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc210d88869ced556d6a055e4f927883125f4e8e0b8709f6b44e35fb7bef493. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/MXH152100195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acd2942a496afab7a566983aef44070de0afe69fc9270fb1fed224184a22138. 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/MXH152100196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176cd751fd7e1f8b94ead65431ee44a5f43f165e380f911337854ad642968cfb. 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/MXH152100200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe25dfb2fdd1da8657f0e1d6de4ff28d4447e6021f7bd1bef79146dd520ea88. 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/MXH152100202.
Popurrí: Cuanto Me Gusta Este Rancho / Amor a la Ligera / Que Se Te Quite Ese Orgullo / Y por Esa Calle Vive / Se Va Muriendo Mi Alma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a61530e176363c6bf5c0259553c5c20abb312a2bc7b8720a07732bd040c356f. 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/MXH152100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3809a37fcfebb5a5507d670965894725de3cdacc94bf6b5e44f687db96701b16. 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/MXH152100217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e6f0b5ecb02c2ee51269dbe89e8c16ff6d995a398e46c47e4eb047c02b5a6d. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/MXH152100194.
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 0x889ffc777bb5c4762e247f8f8690561c7f39db832348064b865e9955d5da3aef. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/MXH152100198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f237b6933d0973f267ba8cb5b7c0e2836415ecd280dbade29444c96bdd7fff. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/MXH152100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c867d3349a0af8ae62fd97af459bfa24e739fd0e065840497ae5d68e56ea70. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/MXH152100213.