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 0x11fc78cf8103515b535cc2f058add7d60e21bf3ac89136fbd14226e5303529bf. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0608732e-f199-4aed-9df7-1a6ed43e9912.json and https://artists.proofprofile.net/proofs/artist/0608732e-f199-4aed-9df7-1a6ed43e9912.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 0x6e195384145a82ead57f75977ee8e6e9e45afb97e99772723fb763341e869ad0. 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/USL4R2167601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283850e00a106d2c56172808a1ed77b56efdec29e9bfe2e8b43fa14d725f960c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USL4R2167606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a0eb7cec318e661775afbacbb8a1ae8a9ae391e6ae5c1dd10e72d8a985c4d3. 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/USL4R2167609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06101b15509bcf014112403920ee5cbb580a85f183fd839acdabc447a3df1115. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USL4R2167599.
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 0x32596df0a104f6ad7264d8246e56bf212d313daeea7ac7e2ae8a8250ff8b8b84. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USL4R2167600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40cf370c66c250ab172a58a446622453f754a084ca02d3d9994e616c10cbe52. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USL4R2167602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74fa8fb117f150a3eb631ed3b09a135c637d5c83382f3ca7d359bd5788eaac9. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USL4R2167603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283ad76325644abd06fe3a8c8975090f5ef22b9ed4b30cd6857c1ae4addfd5e1. 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/USL4R2167604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81deba86870fd499c3592d2f8a0ba44625d5a05ee60c42eed091a92aa457f0ef. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/USL4R2167605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9aad637a3b604d4daf9e02b38ec16e47d0e974c36e4518f18b5c019976d42e. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USL4R2167607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ad1b580ee826fde45d6256d67e7ec82f699ba9ca5868dae994895677165769. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/USL4R2167608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2216c5714b94b470ca80989a6c2ced8d244595f33ced2e40ac94ca9ebe20db. 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/AR0781800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c2d8f9ab8b70c48d2022604f533f9d6911b51375b6e7bb4ee8afeb9fd04daa. 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/AR0781800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde88be831b4f836ac76b079f9668bba4ffba861dd866b4198bbdf1f45db135b1. 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/AR0781800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459f96a0173af429f92ca2f0cd68811082091d9fbaff17ec3e3372a8fb71531f. 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/AR0781800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba3a7d4534ee728f037af5ebe0c22160ce9fd231bc1a491f025446f7fb01bce. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/AR0781800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12348623e8adc09db3f733a7f3912fc72b2890a477276d477092e018de49f33d. 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/AR0781800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4db486818d3543f20704d2c1e813de99cf4a60c84df8114f133406d7c3bd56. 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/AR0781800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0923b07db5c4f34116128d3cc8408a48944cb1e6dc10f6a9eef40a44dcd6ac. 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/AR0781800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9c67508fe05b9c5183dce953cfd4b0281d8aab1ea02761c90e5f414fc56e26. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:47:42Z), 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/AR0781800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c34ca27ea8e7c4dede5742a634b1681ccc3c2d388bf019d37e60e08477987d. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/AR0781800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4005186372962ea2c08cb1673c5fe4c03df6dab6fd94fddc346dfbbdffb56856. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/AR0781800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898c1ca08cce8e6b9deee24f0381f50d40199424cd2f1b9352b699e2fa155ad7. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/AR0781800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99022773e0fcbfc06bbf5d0029a771a2cc4b5be3b6075710fa0fe5e325a193d7. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/AR0781800012.
Quiero Verte una Vez Más (Vamo' Argentina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f79a083a700577d3634f2b0d0f74e135745156da3b5e12e5b1eff1b25a3793. 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/AEA0D1816303.